hiro yamamoto chemistry

. He's since formed several other bands, including No Time For Shade, alongside his wife Kate McDonald. 2011, 133, 12861289. The Chemistry Department. The catalyst is optimized with the low catalyst loading of 0.5 1.0 mol %. These proceed exceedingly efficiently catalyzed by the TBOxCr(III)Cl redox system due to the well designed chiral environment of the ligands and the cis- configuration of the center Cr meta. Chem. Hiro Yamamoto - Simple English Wikipedia, the free encyclopedia Nonetheless, the full potential of acid catalysts is still not yet realized. U. S. A. [email protected] 360-650-3070. A new class of chiral ligand, tethered bis(8-quinolinol) (TBOxH) is developed. All of us Asian people have dealt with this, silently taking it, and I think what I appreciate about the Asian Hall of Fame is it's both about celebrating the stuff that we have done and bringing out the stories of what Asian people have been through in this country. 2006, 128, 48. 0000002210 00000 n Lett.2005, 7, 3127. General reaction schemes and examples using these highly active and selective catalysts are given and discussed in this tutorial review. The reactive species Yamamoto has stabilized during his career have challenged the fundamental chemistry dogma dictating what type of bonds an element can form. Chiral 1,2-diols have been prepared from -aminoxylated aldehydes or cyclohexanone and Grignard reagents with L-proline or its tetrazole derivative as the catalyst. transformed to protected cis-amino alcohol which is an attractive intermediate for This website is using a security service to protect itself from online attacks. The highly enantioselective Soc., 2007, 129, 469-497. The band reunited in 2008. Without the use of any transition metal catalysts, various organic transformations including asymmetric synthesis can be performed efficiently. Chem. Distinguished Professor Yohsuke Yamamoto, Chemistry, Program for Promoting the Enhancement of Research Universities, Research Centers Aiming to Be among the World's Best, Securing and Fostering of Excellent Research Personnel, http://seeds.office.hiroshima-u.ac.jp/profile/en.b0888bbb04b95c3d520e17560c007669.html, https://www.hiroshima-u.ac.jp/en/news/36374, Distinguished Professor Eiso Hiyama, Natural Science Center for Basic Research and Development. Soc., 2009, 131, 16628-16629. Ed. This is based on our finding about control of regioselectivity by changing the amine moiety of enamine and choice of Brnsted acidity. Truly released two studio albums and a compilation of unreleased material before breaking up in 2000. football teams in coventry looking for players. The bulky Lewis acid, bis(2,6-diphenyl-phenoxide) aluminum triflimide, in conjunction with the TTMSS enol ethers was found to give exceedingly high yields and diastereoselectivities compared to other Lewis acid/ silyl enol ether combinations. Catalytic Asymmetric Nitroso Diels--Alder Reaction with Acyclic Dienes, Yamamoto, Y.; Yamamoto, H. Angew. Hiro Yamamoto email address & phone number | California Institute of The product can be converted to When an element possesses more bonds than is expected by the octet rule, it is labeled as hypervalent. Hiroaki Yamamoto. 2005, 44, 4389. In 1989 he spent a year at Vanderbilt University (Tennessee, USA) with Professor James Cullen Martin, a revered physical organic chemist. This mini-review concerns the rapidly growing field of Brnsted acid catalysis. Chemisorption and surface reactions of molecular deuterium and Enl., 2006, 45, 5849-5852. Find contact details for 700 million professionals. Acad. 0000002496 00000 n Hisashi Yamamoto | University of Chicago Department of Chemistry Following a successful 2016 jam session, Yamamoto formed a surf-inspired trio, Stereo Donkey, with drummer Mike Bajuk, and guitarist Pat Wickline. MHIRJ and ZeroAvia to collaborate on the design & development of Zero Emission propulsion technology for Regional Jets. The obtained Diels-Alder adduct was easily 2008, 130, 12276-12278. Soc. Yamamoto had a strong interest in organic chemistry in high school, so he earned Bachelors Masters and Ph.D. degrees in organic chemistry at the University of Tokyo between 1973 and 1982, and then immediately started his professional career as an organic chemist at Hiroshima University. YAMAMOTO Lab.JAIST Currently he is the Project Leader and Coordinator for a 5 years funding grant worth 111.8 million Japanese Yen (approximately 1 million US Dollars) from the Japanese government to search for potential functional applications of different kinds of synthesized organic molecules based on collaborative research among 73 different professors across Japan. Hiro-o Hamaguchi A new photochemical reaction has been found between trans-stilbene and carbon tetrachloride. Yamamoto, a self taught musician, never stopped playing music. Up to 97% ee was obtained for the chiral dinucleus BINOL-aluminum complex catalyzed reaction between tropones and ketene diethyl acetal to give bicyclo[3.2.2] ring structures, which opens up a unique way of making chiral seven-membered rings. Development of catalytic asymmetric reactions using optically active silver complexes. Hiro was one of the founders of Soungarden and is a former bassist for the Grammy award-winning grunge band. Soc. catalytic asymmetric version of this reaction using chiral Cu(I) catalysis. Solid-state Chemistry: Electron-proton Coupled System. Ernst Otto Fischer and Geoffrey Wilkinson received the Nobel Prize in Chemistry in 1973 for their research related to carbenes, and Yamamoto mentions speculation within the chemistry community that other researchers may soon receive the Nobel Prize for related follow-up accomplishments of singlet carbenes. Chem. If we can stabilize a triplet carbene in the solid-state, it will be like a gold medal, says Yamamoto. This review article summarizes the recent advances of asymmetric nitroso DielsAlder reaction. After all the liquid used in the reaction had evaporated away, the crystal of a 16p anti-aromatic porphyrin ring remained. With the hydrogen bonding catalysis, high enantioselectivities and complete diastereoselectivity are realized in synthesis of nitroso Diels-Alder-type bicyclo ketones. All Right Reserved. A theoretically predicted alternative arrangement for porphyrin rings relies on 16p anti-aromatic bonds, where interaction among double bonds creates an unstable network. without any loss of enantioselectivity. Others Named Hiro Yamamoto. 1,327. WELCOME to the YAMAMOTO GROUP. The key Barlan, A. U.; Basak, A.; Yamamoto, H. Angew. Int. A photo of a recent lab group excursion to the top of Mount Misen, located on the nearby island of Miyajima, is the desktop image on the computer behind Yamamoto in the seminar room. Many students now are asking, You have so many fields of research. Various ketone-derived silyl enol ethers, Grignard reagents, and dienes succeeded, generating relatively complex molecular architectures in a single step. A. Odriozola , and G. A. Somorjai Cite this: J. Phys. Albert, B. J., Yamamoto, H. Angew. In 1989 he spent a year at Vanderbilt University . Payette, J. N.; Yamamoto, H. Angew. While bond formation processes have traditionally garnered the attention of the Yamamoto Allylation - an overview | ScienceDirect Topics Generally speaking, spectroscopy makes us possible to obtain the chemical composition of measuring targets with irradiating the laser light or other light sources and careful analysis of the absorption, reflection and scattering of light. I love research activity! I enjoy scientific experiments! I love creating new materials! I want to improve the world with my great discovery! At least one of these should apply to you because such motivations are essential for starting researches in our lab. Abell, JP; Yamamoto, H. Chem. A Triple-Aldol Cascade Reaction for the Rapid Assembly of Polyketides. J. Chem. Hiro Yamamoto - Wikidata Asian J., 2007, 629-698. Ketone super silyl enol ethers are shown to be excellent nucleophiles in the Mukaiyama aldol reaction as well as in sequential one-pot diastereoselective reactions. Learn how and when to remove this template message, "Asian Hall of Fame aims to celebrate Asian contributions, combat anti-Asian hate", Echo of Miles: Scattered Tracks Across the Path, https://en.wikipedia.org/w/index.php?title=Hiro_Yamamoto&oldid=1124002151, BLP articles lacking sources from May 2010, Short description is different from Wikidata, Pages using infobox musical artist with associated acts, Articles containing Japanese-language text, Articles with unsourced statements from September 2021, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 26 November 2022, at 21:29. Co-Authors. I dont mind. I still have time.. Despite the frustrations, sometimes great results can happen unexpectedly. Ed. The combination of a Lewis acid and a metal nitrite is applied to the oxidation of silyl enol ethers. A new chiral N-triflyl phosphoramide is used for asymmetric 1,3-dipolar cycloaddition of diaryl nitrones to ethyl vinyl ether to give the endo products in up to 93% ee. Soundgarden Co-Founder Hiro Yamamoto Inducted Into Asian Hall - Reddit Soc., 2007, 129, 286-287. Soc., 2008,130, 10521-10523. He has been considered as one of the most famous silkscreen artists because of his use of vivid colors in his pieces. Following the ceremony, Thayil, Cameron, and Yamamoto went out to dinner together . The As a result, I found that a free and unfettered research environment is the best for effective basic research. He also had been the general counsel of Mitsubishi Motors Corporation (MMC) from 2007 to 2011 before returning to MHI as one of the senior corporate counsels. Sometimes when the results are not promising for a long time, students want to change focus and do something that can help them succeeded with their studies. But Yamamotos student was doing the research in winter, when it can regularly get quite cold in the Chemistry building. Enl. Compounds via Enamine Intermediate, Momiyama, N.; Torii, H.; Saito, S.; Yamamoto, Yamamoto and coworkers have recently found a chiral aluminum catalyst (79) that catalyzes the hetero cyclocondensation reaction (Scheme 28). Am. To the best of my skills, research themes of students are established taking into consideration the range and direction of each students' interests and according to their preferences, with consideration of the research theme presented by me. Hiro Yamamoto (Japanese: ; Yamamoto Hiro[citation needed]) was the founding bassist of Soundgarden. Contact us: Facebook, Twitter, Instagram, Email. synthesis. Chem. Ed., 2008, 47, 5796-5798. He joined MHI as a sales and marketing representative responsible for missile defense systems for Japan Defense Agency, and later moved to the legal department supporting the aerospace market, among other business segments. efficient entry to catalytic enantioselective introduction of oxygen HNTf2 is proposed to be an initiator, and highly Lewis acidic TTMSSNTf2 is the true catalyst. 0000010477 00000 n Tris(trimethylsilyl)silyl-Governed Aldehyde Cross-Aldol Cascade Reaction. Chem. Platensimycin, a novel antibiotic lead compound, is formally synthesized in an enantioselective fashion from simple starting materials in 10 steps. "We did it for the people, you know, and I've always had that ethos.". Meet MHIRJ's CEO Hiro Yamamoto AirInsight So, now I am actually looking for applications because they can be interesting too, says Yamamoto. The Journal of Physical Chemistry. To date, there are a limited number of reports utilizing alternative sources of cyanide other than KCN/HCN or TMSCN for this important reaction. Super Silyl Group for Diastereoselective Sequential Reactions: Access to Hiro Yamamoto performing with Soundgarden in Berkeley California on a photo by famed rock photographer Charles Peterson. Hiro Yamamoto (born April 13, 1961) is an American bassist who was a founding member of grunge band Soundgarden, along with Kim Thayil and Chris Cornell in 1984. He performed with Cornell, Thayil, and drummer Scott Sundquist on the Deep Six compilation, and performed with Cornell, Thayil, and drummer Matt Cameron on the EPs Screaming Life, Fopp, and Loudest Love, as well as on the albums Ultramega OK and Louder Than Love. Bromine Substitution of Organic Modifiers Fixed on a Titanium (IV) Oxide Photocatalyst: A New Strategy Accelerating Visible LightInduced HydrogenFree Hydrogenation of Furfural to Furfuryl Alcohol - Yamamoto - 2022 - ChemCatChem - Wiley Online Library ChemCatChem Full Paper Asian Hall of Fame adds Soundgarden founder Hiro Yamamoto | king5.com Tf=trifluoromethanesulfonyl. O-Nitroso Aldol Synthesis. iminium intermediate played an important role to enhance the Michael addition Yamamotos research lab has always been staffed almost entirely by students. diethyl ether is essential to induce N-selectivity with high enantioselectivity. The reaction is catalyzed by 0.05 mol % of HNTf2, and can easily be managed to give b,d-bis-, b,d,g-tris- and b,d,z-tris-hydroxy-aldehydes with extremely high selectivity by simple stoichiometric control. in Canada and its sister entities both in the United States and Germany ("MHIRJ"), leading group entities in the business of aerospace services, providing aftermarket support to the fleet of renowned CRJ Series aircrafts as well as supporting the On February 1, 2013, Hiroshima University established two new programs: the Distinguished Professors (DP) program and the Distinguished Researchers (DR) program. Surface-enhanced spectroscopy is a technique of dramatically increasing the intensity of the absorption, reflection and scattering of light using the surface of nanostructures which composed of free electron-rich metals such as silver or gold. Research areassurface enhanced spectroscopy, quantum optics, catalysts , 129, 9536-9537. insights offered by this study are likely to provide a platform for further Ed. Chem. 3. Sites: ascap.com, Wikipedia In Groups: Soundgarden, Truly Variations: Viewing All | Hiro Yamamoto H. Yamamoto, Hiro, Yamamoto Artist [a483438] Edit Artist Marketplace 1,734 For Sale Vinyl and CD Discography 2 27 25 1 1 Data Quality Correct New Updated 250 submissions pending The premise of Yamamotos research is to design chemical environments to stabilize supposedly highly reactive or unstable species so they can be isolated and studied in laboratories. KeywordsSpectroscopy, Raman spectroscopy, surface enhanced spectroscopy, surface-enhanced Raman scattering (SERS), tip-enhanced Raman scattering, nanomaterials. The development of highly enantioselective reactions using TBOxM is surveyed. This phenomenon enables us to measure the chemical composition of measuring targets at a very small scale nanometer-order. country of citizenship. Products could be converted to the protected amino alcohols, which are frequently found in a number of important natural products. After Yamamoto departed, he completed the requirements for his master's degree in physical chemistry at Western Washington University. Development and applications of tethered bis(8-quinolinolato) metal complexes (TBOxM). Stereoselective Synthesis of ,-Chlorofluoro Carbonyl ' The recording reportedly works as both surf music and exotica, yet is still rooted in, "Pacific Northwest rock history. Enantioselective Alkynylation of Aldehydes with 1-Haloalkynes Catalyzed by Tethered Bis(8-quinolinato) Chromium Complex, Usanov, D. L.; Yamamoto, H. J. A conventional heterogeneous photocatalysts such as titanium dioxide (TiO2), which is well-known for its Honda-Fujishima effect, requires ultraviolet light to produce the catalytic effect. I have not been interested in the applications of my research at all, he says, with intense emphasis on the last two words. Soc. hiro yamamoto chemistry - jmcaa.com As did Cornell, Thayil, Cameron, and Shepherd, Yamamoto actively wrote songs for the band: In 1991, Yamamoto formed a three-piece indie band, Truly; the other members were former Screaming Trees drummer Mark Pickerel and singer Robert Roth. View the profiles of professionals named "Hiro Yamamoto" on LinkedIn. According to Wickline, 'The room is a fourth member of the band. Recent progress from mechanistic studies, J. Raman Spectrosc., 47, 78-88, 2016. Ed. Life [ edit] Born in Kobe, Japan, Yamamoto earned a B.S. Many times I was asked, Why are you doing such kind of things? And my answer is, "Because I find it interesting.". He was born in Kobe, Japan. Enantioselective Nitroso Aldol Synthesis. Highly Influential Citations 37. J. In short order: The shortest total syntheses of natural product EBC-23 (see scheme, PMB=para-methoxybenzyl, TMS=trimethylsilyl) and a polymethoxy-1-alkene to date have been accomplished in just ten total steps each from commercially available chemicals. One project that he knows he might not have enough time to solve is a decade-long research puzzle that continues to go unfinished. Then we realized that we could use these to make rechargeable batteries with no metal based on discussions among professors in the project. The cold temperature had allowed the unstable compound to resist degradation. There is a push to find applications of the fundamental knowledge of the elements that was so hard-earned through the passion and persistence of generations of chemists. Porphyrin rings stability comes from the double bonds between the elements building the ring structure. "I've got this weird brain," he said. Associate ProfessorYAMAMOTO Yuko S. E-mail [Research areas]surface enhanced spectroscopy, quantum optics, catalysts [Keywords]Spectroscopy, Raman spectroscopy, surface enhanced spectroscopy, surface-enhanced Raman scattering (SERS), tip-enhanced Raman scattering, nanomaterials Table salt, NaCl, is a molecular species, but when dissolved in water, the atoms dissociate and become the charged ionic species Na+ and Cl-. Am. These rings are usually highly stable. Asymmetric transformation of esterification, amidation, halogenation using designer acid catalysis. hiro yamamoto chemistry. Int. Ed., 2008, 47, 2411-2413. Chem. Ed. Importantly, high levels of asymmetric induction were also observed with dienophiles that lacked the typical hydrogen-bonding motif required for other oxazaborolidinium-mediated reactions. Baidya, M., Yamamoto. Am. In our lab, we focus on the photochemical reactions which occur on a surface of metal nanoparticles with plasmon resonance, monitored by surface-enhanced Raman scattering with irradiation of visible light. Int. I started on very narrow research about the main group elements chemistry as an undergraduate and graduate student. Because of the electron density of the TBOxH ligand high turnover numbers are expected, hence allowing decrease in the chromium catalyst loadings and acceleration of the reaction rate. Pasadena, California, United States View. Chem. for a broad range of ester and dicarbonyl compounds involving carbanion addition to The use of tethered bis(8-quinolinato) chromium catalyst (3 mol %) allowed preparation of enantioenriched propargyl alcohols with good yields and enantioselectivities up to 92% ee. This project is very, very difficult. He is currently the Chief of Organic Chemistry at Edge Analytical in Burlington, Washington. Soc. He is a bassist. We explore the nanoworld using surface-enhanced spectroscopy. Soc., 2007, 129, 9534. Am. Am. Soc. Chem. different complexes has been achieved via proper combination of metal/ligand ratio Role on Regio- and Enantioselectivity, Momiyama, N.; Yamamoto, H. J. It wasnt the sulfur porphyrin ring that Yamamoto had been looking for, but it was something completely novel. J. Hiro Yamamoto Real Name: Hiro D. Yamamoto Profile: American bass player. Yamamotos goal is to create a way to stabilize a triplet carbene and isolate it as a crystalline solid or powder. Hisashi Yamamoto (born in 1943) is organic chemist in Japan. blocks of complex natural products. Am. Of course, I always provide individual guidance for each students as needed. Yields of cyclobutane adducts of up to 94% and with 99% diastereoselectivity have been achieved. Am. For homoallylic alcohols, the reaction could provide epoxy alcohols in up to 83% yield and up to 98% ee, while, for bishomoallylic alcohols, up to 79% yield and 99% ee of epoxy alcohols rather than cyclized tetrahydrofuran compounds could be obtained in most cases. ,-Chlorofluoroaldehydes were successfully synthesized by organocatalytic fluorination of -chloroaldehydes with up to >99:1 of enantiomeric ratio. Claim Author Page. We investigate materials such as: low-dimensional strongly correlated . Current research topics of us are as follows: In recent years, nanostructures made of coinage metals such as gold and silver, showing strong plasmon resonance in the visible light region are considered very promising as next-generation heterogeneous photocatalyst materials. "That whole underground music scene and the art scene back then was burgeoning and it was exciting," he told us over Zoom. Diastereo- and Enantioselective Synthesis of Nitroso Diels-Alder-Type Bicycloketones Using Dienamine: Mechanistic Insight into Sequential Nitroso Aldol/Michael Reaction and Application for Optically Pure 1-Amino-3,4-diol Synthesis, Momiyama, N., Yamamoto, Y., Yamamoto, H. J. Am. A ,-chlorofluoroketone was also synthesized by zirconium (IV) mediated asymmetric chlorination of fluorinated silyl enolate in a 94:6 enantiomeric ratio. developed by tandem O-nitroso aldol/Michael reaction. For the first five years of Soundgarden, between 1984 and 1989, Yamamoto played bass, wrote songs, and every so often, even sang lead. Complex Chiral Architecture in One Pot, Boxer, M., Yamamoto, H. J. The TBOxCr(III)Cl/TBOxCr(II) system is ideal for catalytic asymmetric redox process. ees. "My dad would always say some people make decisions on their ethics and they suffer for them but they are the courageous ones," Yamamoto shared. Lewis acid assisted chiral Lewis acid (LLA), generated from 1 and SnCl4, is recognized as a highly reactive and enantioselective Diels-Alder catalyst for various classes of substrates. New chiral bishydroxamic acids were synthesized and tested as chiral ligands in the vanadium-catalyzed asymmetric epoxidation of homoallylic alcohols to provide good yields and high enantioselectivities. Information exchanges with members in our lab and confirmation of progress with peers are conducted in the weekly general meeting and seminars. Sci. The catalyst loading could be reduced to 0.05 mol % without any deleterious effect on the enantioselectivity. He departed the band following the spring 1989 European tour. We have demonstrated the first Soc., 2011, 133, 1424814251. Chemisorption and surface reactions of molecular deuterium and hydrocarbons on the rhenium(0001) single-crystal surface clean and in the presence of co-adsorbed sulfur or carbon D. G. Kelly J. Regioselective and Asymetric Diels-Alder Reaction of 1- and 2-Substituted Cyclopentadienes Catalyzed by a Yamamoto is one of six Northwest inductees into the Asian Hall of Fame. The department offers M.S., B.S., and B.A. Hiro Yamamoto - Wikiwand October 25, 2021. Distinguished Professor Yohsuke Yamamoto is efficient in his movements around the Chemistry Department of Hiroshima University. Am. A combination of partially reduced chiral H8-TBOx chromium catalyst 1 and achiral cobalt porphine co-catalyst 2 (Ar=*p *-anisyl) led to an enhancement in enantioselectivity by suppression of the background process that presumably proceeds through an organomanganese species. 226 445; 270 KB. 773.702.5059 tel Vanadium-Catalyzed Enantioselective Desymmetrization of meso-Secondary Allylic Alcohols and Homoallylic Alcohols, Li, Z., Zhang, W., Yamamoto, H. Angew. The tethered bis(8-quinolinolato) metal (TBOxM) complexes have found practical use in many asymmetric reactions. His parents were both sent to internment camps during World War 2. 13 0 obj <> endobj xref 13 17 0000000016 00000 n 2009, 48, 8060-8062. Referenced Authors. At the same time, we are working to discover new physical or chemical phenomena that emerge from surface-enhanced Raman scattering and understand their mechanisms. Hiro Yamamoto () (born April 13, 1961) is an American musician. Judging from the color of the crystal, I expected nothing interesting, so I did not want to do it. Students with grand ambitions are particularly welcome. A virtual induction ceremony will be livestreamed on Nov. 13 at 6 p.m. on the Asian Hall of Fame's YouTube channel and Facebook page . We have developed a novel, transition metal-free oxidative C-C bond cleavage process Chem. I act like a white person 99% of the time but I always know that Im not. Yuko S. Yamamoto*, Tamitake Itoh*, Why and how do the shapes of surface-enhanced Raman scattering spectra change? I also support you in studying abroad or starting a venture business during or after your time in our laboratory. He is currently director of Molecular Catalyst Research Center at Chubu University. to provide adducts containing adjacent all-carbon quaternary stereocenters in high yields and excellent In 1984, he began the grunge band Soundgarden along with Kim Thayil and Chris Cornell. Organelle specific simultaneous Raman/green fluorescence protein microspectroscopy for living cell physicochemical studies. Schoolhouse Rock, Part 3 - University of Washington Soc., 126 (46), 15038 -15039, 2004. A recent photo of Hiro Yamamoto reunited with his Soundgarden - Reddit Yamamoto had a strong interest in organic chemistry in high school, so he earned Bachelor's Master's and Ph.D. degrees in organic chemistry at the University of Tokyo between 1973 and 1982, and then immediately started his professional career as an organic chemist at Hiroshima University. 2007 Postdoctoral Scholar in Chemistry. Hisashi Yamamoto, Ph.D. 1961 Hiro Yamamoto ( , Yamamoto Hiro, born April 13, 1961) is an American bassist who was a founding member of grunge band Soundgarden, along with Kim Thayil and Chris Cornell in 1984. Plausible transition state was proposed to explain the enantioselectivity. was employing nitrosopyridine as a nitroso substrate to facilitate the chelate Am. Chem. As Soundgarden rocketed to fame and fortune, Yamamoto went back to school, studying chemical engineering at Western Washington University. ", RELATED: Mudhoney bassist launches new podcast. Soc., 2008 0000002245 00000 n Am. Usanov, D. L.; Yamamoto, H. Angew. Furthermore, Diels-Alder adducts of 1-substituted cyclopentadienes are obtained through a one-pot I do not have to always urge the students, We must do this as soon as possible. We have the flexibility to go in many directions with our research and be free to do what we find interesting, says Yamamoto. 7. He is currently the Chief of Organic Chemistry at Edge Analytical in Burlington, Washington. [.] Am. Reactions are catalyzed by C6F5CHTf2 and C6F5CTf2AlMe2 (0.5-1.5 mol%) and provide access to halogenated polyketide fragments. Am. Until we synthesized this 16p anti-aromatic porphyrin ring, it was only predicted to exist.

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