1
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Chen W, Fang H, Xie K, Oestreich M. The Cyclohexa-2,5-dienyl Group as a Placeholder for Hydrogen: Organocatalytic Michael Addition of an Acetaldehyde Surrogate. Chemistry 2020; 26:15126-15129. [PMID: 32808731 PMCID: PMC7756304 DOI: 10.1002/chem.202003764] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 01/09/2023]
Abstract
An aldehyde with a cyclohexa-2,5-dienyl group in the α-position is introduced as a storable surrogate of highly reactive acetaldehyde. The cyclohexa-2,5-dienyl unit is compatible with an enantioselective Michael addition to nitroalkenes promoted by a Hayashi-Jørgensen catalyst and can be removed by a boron Lewis acid mediated C-C bond cleavage. The robust two-step sequence does not require a large excess of the aldehyde component that is typically needed when directly using acetaldehyde.
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Affiliation(s)
- Weiqiang Chen
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Huaquan Fang
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Kaixue Xie
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
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2
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Shi L, Liu Y, Wang C, Yuan X, Liu X, Wu L, Pan Z, Yu Q, Xu C, Yang G. Synthesis of 1-(β-coumarinyl)-1-(β-indolyl)trifluoroethanols through regioselective Friedel–Crafts alkylation of indoles with β-(trifluoroacetyl)coumarins catalyzed by Sc(OTf)3. RSC Adv 2020; 10:13929-13935. [PMID: 35498470 PMCID: PMC9051918 DOI: 10.1039/d0ra01237h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 03/20/2020] [Indexed: 11/22/2022] Open
Abstract
A highly efficient Friedel–Crafts alkylation of indole derivatives with β-(trifluoroacetyl)coumarins using Sc(OTf)3 as a catalyst has been developed, which gives regioselective 1,2-adducts to afford 1-(β-coumarinyl)-1-(β-indolyl)trifluoroethanols. A series of tertiary trifluoroethanols containing different indole and coumarin groups were synthesized in moderate to excellent yields (up to 95%) in the presence of 5 mol% catalyst in a short time (only 2 minutes at least). A mechanism of the reaction, in which the trace amount of water plays the role of proton transfer in catalyzing circulation was proposed and confirmed. A Friedel–Crafts alkylation of indoles with β-(trifluoroacetyl)coumarins catalyzed by Sc(OTf)3 to afford 1-(β-coumarinyl)-1-(β-indolyl)trifluoroethanols in a short time and high yield was developed.![]()
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Affiliation(s)
- Lijun Shi
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Ying Liu
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Caixia Wang
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Xinxin Yuan
- College of Resource and Environment
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Xiaobiao Liu
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Lulu Wu
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Zhenliang Pan
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Qicheng Yu
- College of Animal Science and Veterinary Medicine
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Cuilian Xu
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Guoyu Yang
- School of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
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3
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Hubbell AK, LaPointe AM, Lamb JR, Coates GW. Regioselective Carbonylation of 2,2-Disubstituted Epoxides: An Alternative Route to Ketone-Based Aldol Products. J Am Chem Soc 2019; 141:2474-2480. [DOI: 10.1021/jacs.8b12286] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Aran K. Hubbell
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Anne M. LaPointe
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Jessica R. Lamb
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W. Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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4
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Pluta R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α‐Alkoxyamides to α‐Fluorinated Ketones. Angew Chem Int Ed Engl 2019; 58:2459-2463. [PMID: 30652398 DOI: 10.1002/anie.201814607] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Roman Pluta
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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5
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Pluta R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of α‐Alkoxyamides to α‐Fluorinated Ketones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814607] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Roman Pluta
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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6
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Kohari Y, Kon K, Murata M. Tripeptide-Catalyzed Asymmetric Aldol Reaction of Trifluoromethylated Aromatic Ketones with Acetone. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)77] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Dai QS, Zhang X, Yang KC, Li MH, Yang J, Li QZ, Feng X, Han B, Li JL. Chiral Amine-Catalyzed Stereoselective [4+2] Annulations of Alkenyl Thiazolones and Aliphatic Aldehydes via
a Step-Wise Mechanism. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800806] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qing-Song Dai
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xiang Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Mao-Hua Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Jie Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Xin Feng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources; Chengdu University of Traditional Chinese Medicine; Chengdu 611137 PR China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 PR China
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8
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Nakano H, Alade Owolabi I, Chennapuram M, Okuyama Y, Kwon E, Seki C, Tokiwa M, Takeshita M. β-Amino Alcohol Organocatalysts for Asymmetric Additions. HETEROCYCLES 2018. [DOI: 10.3987/rev-18-sr(t)3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Highly stereoselective synthesis of 1-cyanocyclopropane-carboxamides from 3-substituted-2-cyanoacrylamides with N -tosylhydrazones under metal-free conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Subba Reddy UV, Chennapuram M, Seki K, Seki C, Anusha B, Kwon E, Okuyama Y, Uwai K, Tokiwa M, Takeshita M, Nakano H. A Diamino Alcohol Catalyzed Enantioselective Crossed Aldol Reaction of Acetaldehyde with Isatins - A Concise Total Synthesis of Antitumor Agents. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700399] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ummareddy Venkata Subba Reddy
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Madhu Chennapuram
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Kento Seki
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Chigusa Seki
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Bheemreddy Anusha
- Department of Chemistry; KVR Degree College (Women); -518001 Kurnool Andhra Pradesh India
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules; Graduate School of Sciences; Tohoku University; 6-3 Aoba, Aramaki, Aoba-ku 980-8578 Sendai Japan
| | - Yuko Okuyama
- Tohoku Medical and Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku 981-8558 Sendai Japan
| | - Koji Uwai
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
| | - Michio Tokiwa
- Tokiwakai Group; 62 Numajiri Tsuduri-chou, Uchigo 973-8053 Iwaki Japan
| | | | - Hiroto Nakano
- Division of Sustainable and Environmental Engineering; Graduate School of Engineering; Muroran Institute of Technology; 27-1 Mizumoto 050-8585 Muroran Japan
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11
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Duan J, Cheng Y, Cheng J, Li R, Li P. Organocatalytic Asymmetric Benzylation and Aldol-Hemiacetalization of α,β-Unsaturated Trifluoromethyl Ketones: Efficient Enantioselective Construction of 3,4-Dihydroisocoumarins. Chemistry 2016; 23:519-523. [DOI: 10.1002/chem.201604920] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Jindian Duan
- Department of Chemistry; South University of Science and Technology of China; 1088 Xueyuan Blvd., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Yuyu Cheng
- Department of Chemistry; South University of Science and Technology of China; 1088 Xueyuan Blvd., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Jing Cheng
- Department of Chemistry; South University of Science and Technology of China; 1088 Xueyuan Blvd., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Rou Li
- Department of Chemistry; South University of Science and Technology of China; 1088 Xueyuan Blvd., Nanshan District Shenzhen, Guangdong 518055 P. R. China
| | - Pengfei Li
- Department of Chemistry; South University of Science and Technology of China; 1088 Xueyuan Blvd., Nanshan District Shenzhen, Guangdong 518055 P. R. China
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12
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Li JL, Yang KC, Li Y, Li Q, Zhu HP, Han B, Peng C, Zhi YG, Gou XJ. Asymmetric synthesis of bicyclic dihydropyrans via organocatalytic inverse-electron-demand oxo-Diels–Alder reactions of enolizable aliphatic aldehydes. Chem Commun (Camb) 2016; 52:10617-20. [DOI: 10.1039/c6cc05001h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An unprecedented highly enantioselective amine catalyzed oxo-IEDDA reaction of cyclic enones with enolizable aldehydes including aqueous acetaldehyde has been developed.
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Affiliation(s)
- Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Kai-Chuan Yang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Yi Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Qiang Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Hong-Ping Zhu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research
- Development and Utilization of Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Yong-Gang Zhi
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- China
| | - Xiao-Jun Gou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
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13
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Yin SJ, Zhang SY, Zhang JQ, Sun BB, Fan WT, Wu B, Wang XW. Organocatalytic tandem enantioselective Michael-cyclization of isatin-derived β,γ-unsaturated α-ketoesters with 3-hydroxy-4H-chromen-4-one or 2-hydroxy-1,4-naphthoquinone derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra17400k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
An efficient tandem Michael-cyclization has been reported to provide two types of enantio-enriched spiro-oxindole derivatives in high yields with excellent stereoselectivities.
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Affiliation(s)
- Shao-Jie Yin
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Shao-Yun Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Jun-Qi Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Bing-Bing Sun
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Wei-Tai Fan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Bing Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Xing-Wang Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
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14
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Kim SM, Kim YS, Kim DW, Rios R, Yang JW. Acetaldehyde: A Small Organic Molecule with Big Impact on Organocatalytic Reactions. Chemistry 2015; 22:2214-34. [PMID: 26667963 DOI: 10.1002/chem.201503960] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Indexed: 11/11/2022]
Abstract
Stereocontrolled formation of carbon-carbon and carbon-heteroatom bonds through asymmetric organocatalysis is a formidable challenge for modern synthetic chemistry. Among the most significant contributions to this field are the transformations involving the use of acetaldehyde or α-heteroatom-substituted acetaldehydes for constructing valuable synthons (e.g., amino acid derivatives and hydroxycarbonyl). In this Minireview, versatile (enantioselective) organocatalytic transformations are discussed.
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Affiliation(s)
- Sun Min Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Young Sug Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Dong Wan Kim
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea
| | - Ramon Rios
- Faculty of Natural and Environmental Science, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK.
| | - Jung Woon Yang
- Department of Energy Science, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea.
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15
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Lin YJ, Du LN, Kang TR, Liu QZ, Chen ZQ, He L. Enantio- and Diastereoselective Formal Hetero-Diels-Alder Reactions of Trifluoromethylated Enones Catalyzed by Chiral Primary Amines. Chemistry 2015; 21:11773-8. [DOI: 10.1002/chem.201501897] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Indexed: 12/23/2022]
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16
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Konda S, Guo QS, Abe M, Huang H, Arman H, Zhao JCG. Organocatalyzed Asymmetric Aldol Reactions of Ketones and β,γ-Unsaturated α-Ketoesters and Phenylglyoxal Hydrates. J Org Chem 2014; 80:806-15. [DOI: 10.1021/jo502254e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Swapna Konda
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Qun-Sheng Guo
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Manabu Abe
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8526, Japan
| | - Huicai Huang
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Hadi Arman
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - John C.-G. Zhao
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
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17
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García JM, Odriozola JM, Razkin J, Lapuerta I, Odriozola A, Urruzuno I, Vera S, Oiarbide M, Palomo C. Catalytic Enantioselective Quick Route to Aldol-Tethered 1,6- and 1,7-Enynes from ω-Unsaturated Aldehydes. Chemistry 2014; 20:15543-54. [DOI: 10.1002/chem.201404452] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Indexed: 11/07/2022]
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18
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Guo W, Wei J, Liu Y, Li C. Construction of anti-1,2-diols bearing chiral tertiary alcohol moiety using free hydroxyacetone as aldol donor by imidazole-based prolineamide catalyst. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Enantioselective aldol reactions of α,β-unsaturated ketones with trifluoroacetophenone catalyzed by a chiral primary amine. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.05.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Ma CH, Kang TR, He L, Liu QZ. Highly Enantioselective Michael Addition of Malonates to β-CF3-β-(3-Indolyl)nitroalkenes: Construction of Trifluoromethylated All-Carbon Quaternary Stereogenic Centres. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402243] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Vinogradova EV, Müller P, Buchwald SL. Structural reevaluation of the electrophilic hypervalent iodine reagent for trifluoromethylthiolation supported by the crystalline sponge method for X-ray analysis. Angew Chem Int Ed Engl 2014; 53:3125-8. [PMID: 24677728 PMCID: PMC4045216 DOI: 10.1002/anie.201310897] [Citation(s) in RCA: 187] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Indexed: 01/09/2023]
Abstract
Hypervalent iodine λ3-benziodoxoles are common electrophilic transfer reagents known for their enhanced stability compared to their non-cyclic analogues. Herein we present data showing that chlorobenziodoxole reacts with two different thiolate nucleophiles (thiocyanate and trifluoromethylthiolate), resulting in the formation of stable thioperoxy complexes rather than the expected benziodoxole derivatives. We further report a revised structure for the earlier described electrophilic trifluoromethylthiolation reagent (1), which was previously believed to contain the benziodoxole framework. Our findings, which are based on a combination of analytical techniques, including the recently introduced crystalline sponge method for X-ray analysis, unambiguously demonstrate that 1 is a thioperoxy compound both in solution and the solid state.
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Affiliation(s)
- Ekaterina V. Vinogradova
- Department of Chemistry, Room 18-490 Massachusetts Institute of Technology Cambridge, MA 02139 (USA)
| | - Peter Müller
- Department of Chemistry, Room 18-490 Massachusetts Institute of Technology Cambridge, MA 02139 (USA)
| | - Stephen L. Buchwald
- Department of Chemistry, Room 18-490 Massachusetts Institute of Technology Cambridge, MA 02139 (USA)
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22
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Vinogradova EV, Müller P, Buchwald SL. Structural Reevaluation of the Electrophilic Hypervalent Iodine Reagent for Trifluoromethylthiolation Supported by the Crystalline Sponge Method for X-ray Analysis. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310897] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Alcoberro S, Gómez-Palomino A, Solà R, Romea P, Urpí F, Font-Bardia M. Stereoselective Titanium-Mediated Aldol Reactions of a Chiral Lactate-Derived Ethyl Ketone with Ketones. Org Lett 2013; 16:584-7. [DOI: 10.1021/ol403461b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sandra Alcoberro
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Alejandro Gómez-Palomino
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Ricard Solà
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Pedro Romea
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Fèlix Urpí
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Mercè Font-Bardia
- Departament de Química Orgànica and ‡Departament de Cristal·lografia,
Mineralogia i Dipòsits Minerals, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
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Liu Y, Kang TR, Liu QZ, Chen LM, Wang YC, Liu J, Xie YM, Yang JL, He L. Enantioselective [4 + 2] Cycloaddition of Cyclic N-Sulfimines and Acyclic Enones or Ynones: A Concise Route to Sulfamidate-Fused 2,6-Disubstituted Piperidin-4-ones. Org Lett 2013; 15:6090-3. [PMID: 24215326 DOI: 10.1021/ol402977w] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Tai-Ran Kang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Quan-Zhong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lian-Mei Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ya-Chuan Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jie Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yong-Mei Xie
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jin-Liang Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Long He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong 637009, China, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
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25
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Scheffler U, Mahrwald R. Recent Advances in Organocatalytic Methods for Asymmetric CC Bond Formation. Chemistry 2013; 19:14346-96. [DOI: 10.1002/chem.201301996] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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