1
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Uno H, Kawai K, Araki T, Shiro M, Shibata N. Enantio-, Diastereo- and Regioselective Synthesis of Chiral Cyclic and Acyclic gem-Difluoromethylenes by Palladium-Catalyzed [4+2] Cycloaddition. Angew Chem Int Ed Engl 2022; 61:e202117635. [PMID: 35344247 DOI: 10.1002/anie.202117635] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Indexed: 12/25/2022]
Abstract
gem-Difluoromethylene moieties are attractive in medicinal chemistry due to their ability to mimic other more ubiquitous functional groups. Thus, effective asymmetric methods for their construction are highly desirable, especially for the industrial production of chiral drugs. Using a Pd-catalyzed asymmetric [4+2] cycloaddition between substituted-2-alkylidenetrimethylene carbonates and gem-difluoroalkyl ketones, we were able to easily access chiral 1,3-dioxanes that contain a tetrasubstituted difluoroalkyl stereogenic center in cyclic and acyclic skeletons. A novel phosphoramidite ligand, which contains a bulky 1,1-dinaphthylmethanamino moiety, was developed to provide the products in high yield with excellent enantio-, diastereo-, and regioselectivity. Strikingly, the gem-difluoro substitution pattern promotes the reaction, and pentafluoroethylketone, an α,α-difluorinated β-ketoester, and a β-ketosulfone are suitable substrates for this method.
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Affiliation(s)
- Hiroto Uno
- Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Koki Kawai
- Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Taichi Araki
- Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Motoo Shiro
- Rigaku Corporation, 3-9-12, Matsubara-cho, Akishima-shi, Tokyo, 196-8666, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences & Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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2
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Xu J, Shi W, Liu M, Liao J, Wang W, Wu Y, Guo H. Palladium‐Catalyzed [4+2] Cycloaddition of Hydroxy‐Tethered Allylic Carbonates with Alkenes: Synthesis of Functionalized Tetrahydropyrans. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jiaqing Xu
- Department of Chemistry and Innovation Center of Pesticide Research China Agricultural University Beijing 100193 People's Republic of China
| | - Wangyu Shi
- Department of Chemistry and Innovation Center of Pesticide Research China Agricultural University Beijing 100193 People's Republic of China
| | - Min Liu
- Department of Chemistry and Innovation Center of Pesticide Research China Agricultural University Beijing 100193 People's Republic of China
| | - Jianning Liao
- Department of Chemistry and Innovation Center of Pesticide Research China Agricultural University Beijing 100193 People's Republic of China
| | - Wei Wang
- College of Public Health Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Yongjun Wu
- College of Public Health Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Hongchao Guo
- Department of Chemistry and Innovation Center of Pesticide Research China Agricultural University Beijing 100193 People's Republic of China
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3
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Uno H, Kawai K, Araki T, Shiro M, Shibata N. Enantio‐, Diastereo‐ and Regioselective Synthesis of Chiral Cyclic and Acyclic gem‐Difluoromethylenes by Palladium‐Catalyzed [4+2] Cycloaddition. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hiroto Uno
- Nagoya Kogyo Daigaku Nano Medicine Kagaku Senko Department of Nanophamaceutical Sciences JAPAN
| | - Koki Kawai
- Nagoya Kogyo Daigaku Department of Chemistry JAPAN
| | - Taichi Araki
- Nagoya Kogyo Daigaku Department of Chemistry JAPAN
| | - Motoo Shiro
- Rigaku Kenkyujo Kakushin chino togo kenkyu senta Non JAPAN
| | - Norio Shibata
- Nagoya Kogyo Daigaku Nano Medicine Kagaku Senko Department of Nanopharmaceutical Science and Department of Frontier Materials Gokiso, Showa-kuNagare College 466-8555 Nagoya JAPAN
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4
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Gao M, Luo Y, Xu Q, Zhao Y, Gong X, Xia Y, Hu L. A Unified Catalytic Asymmetric (4+1) and (5+1) Annulation Strategy to Access Chiral Spirooxindole‐Fused Oxacycles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
| | - Qianlan Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Xiangnan Gong
- Analytical and Testing Center Chongqing University Chongqing 401331 China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
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5
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Gao M, Luo Y, Xu Q, Zhao Y, Gong X, Xia Y, Hu L. A Unified Catalytic Asymmetric (4+1) and (5+1) Annulation Strategy to Access Chiral Spirooxindole-Fused Oxacycles. Angew Chem Int Ed Engl 2021; 60:19813-19820. [PMID: 34160121 DOI: 10.1002/anie.202105282] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/10/2021] [Indexed: 12/11/2022]
Abstract
A unified catalytic asymmetric (N+1) (N=4, 5) annulation reaction of oxindoles with bifunctional peroxides has been achieved in the presence of a chiral phase-transfer catalyst (PTC). This general strategy utilizes peroxides as unique bielectrophilic four- or five-atom synthons to participate in the C-C and the subsequent umpolung C-O bond-forming reactions with one-carbon unit nucleophiles, thus providing a distinct method to access the valuable chiral spirooxindole-tetrahydrofurans and -tetrahydropyrans with good yields and high enantioselectivities under mild conditions. DFT calculations were performed to rationalize the origin of high enantioselectivity. The gram-scale syntheses and synthetic utility of the resultant products were also demonstrated.
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Affiliation(s)
- Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Qianlan Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xiangnan Gong
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
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6
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Palladium‐Catalyzed Diastereoselective Synthesis of (
Z
)‐Conjugated Enynyl Homoallylic Alcohols. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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7
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Yang ZH, Chen P, Chen ZC, Chen Z, Du W, Chen YC. A Double Deprotonation Strategy for Cascade Annulations of Palladium-Trimethylenemethanes and Morita-Baylis-Hillman Carbonates to Construct Bicyclo[3.1.0]hexane Frameworks. Angew Chem Int Ed Engl 2021; 60:13913-13917. [PMID: 33829638 DOI: 10.1002/anie.202102842] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Indexed: 01/01/2023]
Abstract
Here we report that the chemoselective activation of Tsuji's 2-(cyanomethyl)allyl carbonates to generate the palladium-trimethylenemethane 1,3-dipoles via a deprotonation strategy can be realized in the presence of Morita-Baylis-Hillman carbonates from substantial activated ketones. The following SN 2'-addition enables the formation of new 1,3-dipole species having an activated alkene moiety through a second deprotonation process, which then undergo cascade [1+2]/[3+2] annulations to furnish complex bicyclic [3.1.0]hexane frameworks having three contiguous quaternary stereogenic centers with good to excellent enantioselectivity. Moreover, by using benzoyl aldehyde-derived substrates, a [1+4]/[3+2] annulation sequence is similarly developed to produce fused cyclopenta[b]furan architectures.
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Affiliation(s)
- Zhen-Hong Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Peng Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.,College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
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8
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Yang Z, Chen P, Chen Z, Chen Z, Du W, Chen Y. A Double Deprotonation Strategy for Cascade Annulations of Palladium–Trimethylenemethanes and Morita–Baylis–Hillman Carbonates to Construct Bicyclo[3.1.0]hexane Frameworks. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102842] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Zhen‐Hong Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Peng Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Zhi‐Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Zhi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Ying‐Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
- College of Pharmacy Third Military Medical University Chongqing 400038 China
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9
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Muzalevskiy VM, Sizova ZA, Panyushkin VV, Chertkov VA, Khrustalev VN, Nenajdenko VG. α,β-Disubstituted CF 3-Enones as a Trifluoromethyl Building Block: Regioselective Preparation of Totally Substituted 3-CF 3-Pyrazoles. J Org Chem 2021; 86:2385-2405. [PMID: 33423495 DOI: 10.1021/acs.joc.0c02516] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An efficient pathway toward a novel class of trifluoromethyl building blocks was elaborated. The reaction of α-CF3-enamines with arylaldehydes resulted in direct synthesis of α,β-diaryl-CF3-enones isolated in up to 93% yield as E-isomers. The possible reaction mechanism was proposed using the Zimmerman-Traxler model. The reaction of α,β-diaryl-CF3-enones with hydrazines opens a novel pathway to trifluoromethylated pyrazolines. Oxidation of pyrazolines with DDQ opened access to totally regioselective preparation of 3-CF3-pyrazoles isolated in high yield. Using this strategy, 4-arylated derivatives of known drugs Celebrex, Mavacoxib, and SC-560 can be synthesized.
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Affiliation(s)
- Vasiliy M Muzalevskiy
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Zoia A Sizova
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vasiliy V Panyushkin
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vyacheslav A Chertkov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Moscow 117198, Russia.,N. D. Zelinsky Institute of Organic Chemistry of RAS, 47 Leninsky Prospect, Moscow 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
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10
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Deng Q, Meng X. Recent Advances in the Cycloaddition Reactions of 2‐Benzylidene‐1‐benzofuran‐3‐ones, and Their Sulfur, Nitrogen and Methylene Analogues. Chem Asian J 2020; 15:2838-2853. [DOI: 10.1002/asia.202000550] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/13/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Qingsong Deng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion Tianjin Key Laboratory of Drug Targeting and Bioimaging School of Chemistry & Chemical Engineering Tianjin University of Technology Tianjin 300384 P.R. China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion Tianjin Key Laboratory of Drug Targeting and Bioimaging School of Chemistry & Chemical Engineering Tianjin University of Technology Tianjin 300384 P.R. China
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11
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Liu Y, Wang Z, Huang Z, Zheng X, Yang W, Deng W. Palladium‐Catalyzed Asymmetric [4+3] Cyclization of Trimethylenemethane: Regio‐, Diastereo‐, and Enantioselective Construction of Benzofuro[3,2‐
b
]azepine Skeletons. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909158] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang‐Zi Liu
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhongao Wang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zesheng Huang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xing Zheng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wu‐Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wei‐Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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12
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Liu Y, Wang Z, Huang Z, Zheng X, Yang W, Deng W. Palladium‐Catalyzed Asymmetric [4+3] Cyclization of Trimethylenemethane: Regio‐, Diastereo‐, and Enantioselective Construction of Benzofuro[3,2‐
b
]azepine Skeletons. Angew Chem Int Ed Engl 2019; 59:1238-1242. [DOI: 10.1002/anie.201909158] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Yang‐Zi Liu
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhongao Wang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Zesheng Huang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Xing Zheng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wu‐Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
| | - Wei‐Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design East China University of Science and Technology 130 Meilong Road Shanghai 200237 P. R. China
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13
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Trost BM, Zuo Z. Highly Regio‐, Diastereo‐, and Enantioselective Synthesis of Tetrahydroazepines and Benzo[
b
]oxepines through Palladium‐Catalyzed [4+3] Cycloaddition Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911537] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhijun Zuo
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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14
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Trost BM, Zuo Z. Highly Regio‐, Diastereo‐, and Enantioselective Synthesis of Tetrahydroazepines and Benzo[
b
]oxepines through Palladium‐Catalyzed [4+3] Cycloaddition Reactions. Angew Chem Int Ed Engl 2019; 59:1243-1247. [DOI: 10.1002/anie.201911537] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhijun Zuo
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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15
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Trost BM, Jiao Z, Hung C(J. Elaborating Complex Heteroaryl‐Containing Cycles via Enantioselective Palladium‐Catalyzed Cycloadditions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhiwei Jiao
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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16
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Trost BM, Jiao Z, Hung C(J. Elaborating Complex Heteroaryl‐Containing Cycles via Enantioselective Palladium‐Catalyzed Cycloadditions. Angew Chem Int Ed Engl 2019; 58:15154-15158. [DOI: 10.1002/anie.201910061] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
| | - Zhiwei Jiao
- Department of Chemistry Stanford University Stanford CA 94305-5080 USA
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17
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Lee A, Zhu JL, Feoktistova T, Brueckner AC, Cheong PH, Scheidt KA. Carbene‐Catalyzed Enantioselective Decarboxylative Annulations to Access Dihydrobenzoxazinones and Quinolones. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900600] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ansoo Lee
- Department of ChemistryCenter for Molecular Innovation and Drug DiscoveryNorthwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Joshua L. Zhu
- Department of ChemistryCenter for Molecular Innovation and Drug DiscoveryNorthwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Taisiia Feoktistova
- Department of ChemistryOregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | | | - Paul H.‐Y. Cheong
- Department of ChemistryOregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Karl A. Scheidt
- Department of ChemistryCenter for Molecular Innovation and Drug DiscoveryNorthwestern University 2145 Sheridan Road Evanston IL 60208 USA
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18
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Lee A, Zhu JL, Feoktistova T, Brueckner AC, Cheong PHY, Scheidt KA. Carbene-Catalyzed Enantioselective Decarboxylative Annulations to Access Dihydrobenzoxazinones and Quinolones. Angew Chem Int Ed Engl 2019; 58:5941-5945. [PMID: 30843323 DOI: 10.1002/anie.201900600] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/15/2019] [Indexed: 12/16/2022]
Abstract
A direct decarboxylative strategy for the generation of aza-o-quinone methides (aza-o-QMs) by N-heterocyclic carbene (NHC) catalysis has been discovered and explored. This process requires no stoichiometric additives in contrast with current approaches. Aza-o-QMs react with trifluoromethyl ketones through a formal [4+2] manifold to access highly enantioenriched dihydrobenzoxazin-4-one products, which can be converted to dihydroquinolones through an interesting stereoretentive aza-Petasis-Ferrier rearrangement sequence. Complementary dispersion-corrected density functional theory (DFT) studies provided an accurate prediction of the reaction enantioselectivity and lend further insight to the origins of stereocontrol. Additionally, a computed potential energy surface around the major transition structure suggests a concerted asynchronous mechanism for the formal annulation.
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Affiliation(s)
- Ansoo Lee
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Joshua L Zhu
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Taisiia Feoktistova
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331, USA
| | - Alexander C Brueckner
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331, USA
| | - Paul H-Y Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR, 97331, USA
| | - Karl A Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
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