401
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Marin L, Guillot R, Gandon V, Schulz E, Lebœuf D. A diversity-oriented synthesis of cyclopenta[b]pyrroles and related compounds through a calcium(ii)/copper(ii) catalytic sequence. Org Chem Front 2018. [DOI: 10.1039/c7qo00948h] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sequential bicatalytic route relying on calcium(ii) and copper(ii) salts is described to provide access to original nitrogen-containing heterocycles.
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Affiliation(s)
- L. Marin
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
| | - R. Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
| | - V. Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
| | - E. Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
| | - D. Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
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402
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Ma G, Deng C, Deng J, Sibi MP. Dynamic kinetic resolution of biaryl atropisomers by chiral dialkylaminopyridine catalysts. Org Biomol Chem 2018; 16:3121-3126. [DOI: 10.1039/c8ob00384j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Dynamic kinetic resolutions of atropisomers using chiral DMAPs with fluxional chirality.
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Affiliation(s)
- Gaoyuan Ma
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA 58108
| | - Chao Deng
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA 58108
| | - Jun Deng
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA 58108
| | - Mukund P. Sibi
- Department of Chemistry and Biochemistry
- North Dakota State University
- Fargo
- USA 58108
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403
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Chen YZ, Liu T, Zhu J, Zhang H, Wu L. Transition-metal-free radical cleavage of a hydrazonyl N–S bond: tosyl radical-initiated cascade C(sp3)–OAr cleavage, sulfonyl rearrangement and atropisomeric cyclopropanation. Org Chem Front 2018. [DOI: 10.1039/c8qo00873f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Combination of 1,10-phenanthroline and potassium carbonate enables a radical cleavage of a hydrazonyl N–S bond, allowing a coupling reaction of N-tosylhydrazone and phosphinyl allene via cascade C–O cleavage, sulfonyl rearrangement and atropisomeric cyclopropanation.
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Affiliation(s)
- Yao-Zhong Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Teng Liu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jie Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Hui Zhang
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Lei Wu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
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404
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Di Iorio N, Filippini G, Mazzanti A, Righi P, Bencivenni G. Controlling the C(sp3)–C(sp2) Axial Conformation in the Enantioselective Friedel–Crafts-Type Alkylation of β-Naphthols with Inden-1-ones. Org Lett 2017; 19:6692-6695. [DOI: 10.1021/acs.orglett.7b03415] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicola Di Iorio
- Department of Industrial
Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Giacomo Filippini
- Department of Industrial
Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial
Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Paolo Righi
- Department of Industrial
Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Giorgio Bencivenni
- Department of Industrial
Chemistry “Toso Montanari”, Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
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405
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Min C, Lin Y, Seidel D. Catalytic Enantioselective Synthesis of Mariline A and Related Isoindolinones through a Biomimetic Approach. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709182] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Chang Min
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
| | - Yingfu Lin
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Present address: Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Present address: Department of Chemistry University of Florida Gainesville FL 32611 USA
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406
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Min C, Lin Y, Seidel D. Catalytic Enantioselective Synthesis of Mariline A and Related Isoindolinones through a Biomimetic Approach. Angew Chem Int Ed Engl 2017; 56:15353-15357. [DOI: 10.1002/anie.201709182] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 01/15/2023]
Affiliation(s)
- Chang Min
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
| | - Yingfu Lin
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Present address: Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Daniel Seidel
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Present address: Department of Chemistry University of Florida Gainesville FL 32611 USA
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407
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Syntheses and structures of square planar diplatinum butadiynediyl complexes with two different monophosphine ligands on each terminus; probing the feasibility of a new type of inorganic atropisomerism. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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408
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Qi LW, Mao JH, Zhang J, Tan B. Organocatalytic asymmetric arylation of indoles enabled by azo groups. Nat Chem 2017; 10:58-64. [PMID: 29256504 DOI: 10.1038/nchem.2866] [Citation(s) in RCA: 243] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 08/17/2017] [Indexed: 12/23/2022]
Abstract
Arylation is a fundamental reaction that can be mostly fulfilled by electrophilic aromatic substitution and transition-metal-catalysed aryl functionalization. Although the azo group has been used as a directing group for many transformations via transition-metal-catalysed aryl carbon-hydrogen (C-H) bond activation, there remain significant unmet challenges in organocatalytic arylation. Here, we show that the azo group can effectively act as both a directing and activating group for organocatalytic asymmetric arylation of indoles via formal nucleophilic aromatic substitution of azobenzene derivatives. Thus, a wide range of axially chiral arylindoles have been achieved in good yields with excellent enantioselectivities by utilizing chiral phosphoric acid as catalyst. Furthermore, highly enantioenriched pyrroloindoles bearing two contiguous quaternary chiral centres have also been obtained via a cascade enantioselective formal nucleophilic aromatic substitution-cyclization process. This strategy should be useful in other related research fields and will open new avenues for organocatalytic asymmetric aryl functionalization.
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Affiliation(s)
- Liang-Wen Qi
- Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Jian-Hui Mao
- Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Jian Zhang
- Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
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409
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Organocatalytic synthesis of chiral tetrasubstituted allenes from racemic propargylic alcohols. Nat Commun 2017; 8:567. [PMID: 28924216 PMCID: PMC5603569 DOI: 10.1038/s41467-017-00251-x] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/09/2017] [Indexed: 01/24/2023] Open
Abstract
Although chiral allene preparation via formal SN2’ nucleophilic substitutions of enantioenriched propargylic derivatives or metal-catalyzed reactions of racemic propargylic derivatives has attracted considerable attention and found applications in many areas of research, direct use of propargylic alcohols instead of propargylic derivatives for catalytic asymmetric allene synthesis is unknown. Here, we show that a highly enantioselective synthesis of tetrasubstituted allenes from racemic propargylic alcohols has been realized by organocatalysis with good efficiency (up to 96% yield and 97% ee). The intermolecular C–C and C–S bond formation was achieved efficiently with simultaneous stereocontrol over the axial chirality. Furthermore, an adjacent quaternary stereocenter could also be constructed. Mechanistically, the reaction may involve efficient stereocontrol on the propargylic cation by its chiral counter anion or 1,8-conjugate addition of para-quinone methides. In sharp contrast to previous central chirality construction, this process employs quinone methides for axial chirality construction. Axially chiral allenes that are normally present in natural products, bioactive molecules, organocatalysts, and functional materials are usually produced from propargylic derivatives. Here, the authors show direct use of propargylic alcohols for catalytic asymmetric allene synthesis.
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410
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Costil R, Dale HJA, Fey N, Whitcombe G, Matlock JV, Clayden J. Heavily Substituted Atropisomeric Diarylamines by Unactivated Smiles Rearrangement of
N
‐Aryl Anthranilamides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706341] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Romain Costil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Harvey J. A. Dale
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - George Whitcombe
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | - Jonathan Clayden
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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411
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Costil R, Dale HJA, Fey N, Whitcombe G, Matlock JV, Clayden J. Heavily Substituted Atropisomeric Diarylamines by Unactivated Smiles Rearrangement of
N
‐Aryl Anthranilamides. Angew Chem Int Ed Engl 2017; 56:12533-12537. [DOI: 10.1002/anie.201706341] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/16/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Romain Costil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Harvey J. A. Dale
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - George Whitcombe
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | - Jonathan Clayden
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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412
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Witzig RM, Lotter D, Fäseke VC, Sparr C. Stereoselective Arene-Forming Aldol Condensation: Catalyst-Controlled Synthesis of Axially Chiral Compounds. Chemistry 2017; 23:12960-12966. [DOI: 10.1002/chem.201702471] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Reto M. Witzig
- Department of Chemistry; University of Basel; 4056 Basel Switzerland
| | - Dominik Lotter
- Department of Chemistry; University of Basel; 4056 Basel Switzerland
| | - Vincent C. Fäseke
- Department of Chemistry; University of Basel; 4056 Basel Switzerland
| | - Christof Sparr
- Department of Chemistry; University of Basel; 4056 Basel Switzerland
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413
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Wang C, Matile S. Anion-π Catalysts with Axial Chirality. Chemistry 2017; 23:11955-11960. [DOI: 10.1002/chem.201702672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Chao Wang
- Department of Organic Chemistry; University of Geneva; Geneva Switzerland
| | - Stefan Matile
- Department of Organic Chemistry; University of Geneva; Geneva Switzerland
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414
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Kim HY, Takizawa S, Sasai H, Oh K. Reversal of Enantioselectivity Approach to BINOLs via Single and Dual 2-Naphthol Activation Modes. Org Lett 2017; 19:3867-3870. [DOI: 10.1021/acs.orglett.7b01734] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hun Young Kim
- Center
for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Shinobu Takizawa
- The
Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Hiroaki Sasai
- The
Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Kyungsoo Oh
- Center
for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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415
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Lorentzen M, Kalvet I, Sauriol F, Rantanen T, Jørgensen KB, Snieckus V. Atropisomerism in Tertiary Biaryl 2-Amides: A Study of Ar–CO and Ar–Ar′ Rotational Barriers. J Org Chem 2017. [DOI: 10.1021/acs.joc.7b00890] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marianne Lorentzen
- Faculty
of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Indrek Kalvet
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Institute
of Chemistry, University of Tartu, Ravila 14A, 50411 Tartu, Estonia
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Francoise Sauriol
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Toni Rantanen
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | - Kåre B. Jørgensen
- Faculty
of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Victor Snieckus
- Snieckus
Innovations, Queen’s University, Kingston, ON K7L 3N6, Canada
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
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416
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Gataullin RR, Ibatullina ZA, Meshcheryakova ES, Fatykhov AA, Khalilov LM. Atropisomeric N-acyl-N-(cyclopentenylphenyl)glycines in the synthesis of oxazolo[3,4-a]benzoxazocinones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017050098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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417
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Hasegawa F, Kawamura K, Tsuchikawa H, Murata M. Stable C-N axial chirality in 1-aryluracil scaffold and differences in in vitro metabolic clearance between atropisomers of PDE4 inhibitor. Bioorg Med Chem 2017; 25:4506-4511. [PMID: 28698053 DOI: 10.1016/j.bmc.2017.06.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 06/22/2017] [Accepted: 06/26/2017] [Indexed: 10/19/2022]
Abstract
We report herein the stable C-N axial chirality in a 1-phenyl-6-aminouracil scaffold owing to the presence of various functional groups at the ortho-position of the N(1)-phenyl group. Racemic 1-phenyl-6-aminouracils were first separated by chiral HPLC or converting them to the corresponding diastereomers using a chiral resolving agent. We then determined the rotational barrier of each atropisomer by a thermal racemization method and found that these compounds have rotational barriers similar to other C-N axially chiral biaryls. In addition, there was a good correlation between the rotational barriers and van der Waals radii of an ortho-substituent of the N(1)-phenyl group. To explore the possibility of the chiral 1-phenyl-6-aminouracil scaffold as a drug lead, we synthesized both atropisomers as phosphodiesterase-4 inhibitors 10. The atropisomers showed significantly different metabolic stabilities while their PDE4 inhibitory activities were somewhat similar. This finding demonstrates the potential utility of stable C-N bond atropisomers in the development of chiral drugs.
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Affiliation(s)
- Futoshi Hasegawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Kazushi Kawamura
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroshi Tsuchikawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Michio Murata
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
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418
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Tabata H, Yoneda T, Oshitari T, Takahashi H, Natsugari H. Tolvaptan-Type Vasopressin Receptor Ligands: Important Role of Axial Chirality in the Active Form. J Med Chem 2017; 60:4503-4509. [DOI: 10.1021/acs.jmedchem.7b00422] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hidetsugu Tabata
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tetsuya Yoneda
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tetsuta Oshitari
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hideyo Takahashi
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Hideaki Natsugari
- Faculty of Pharma Sciences, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan
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419
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Miyaji R, Asano K, Matsubara S. Induction of Axial Chirality in 8-Arylquinolines through Halogenation Reactions Using Bifunctional Organocatalysts. Chemistry 2017; 23:9996-10000. [PMID: 28429870 DOI: 10.1002/chem.201701707] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Indexed: 12/15/2022]
Abstract
The enantioselective syntheses of axially chiral heterobiaryls were accomplished through the aromatic electrophilic halogenation of 3-(quinolin-8-yl)phenols with bifunctional organocatalysts that control the molecular conformations during successive halogenations. Axially chiral quinoline derivatives, which have rarely been synthesized in an enantioselective catalytic manner, were afforded in moderate-to-good enantioselectivities through bromination, and an analogous protocol also enabled enantioselective iodination. In addition, this catalytic reaction, which allows enantioselective control through the use of mono-ortho-substituted substrates, allowed the asymmetric synthesis of 8-arylquinoline derivatives bearing two different halogen groups in high enantioselectivities.
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Affiliation(s)
- Ryota Miyaji
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto, 610-8510, Japan
| | - Keisuke Asano
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto, 610-8510, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto, 610-8510, Japan
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420
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Organocatalytic atroposelective synthesis of axially chiral styrenes. Nat Commun 2017; 8:15238. [PMID: 28466872 PMCID: PMC5418600 DOI: 10.1038/ncomms15238] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 03/13/2017] [Indexed: 12/31/2022] Open
Abstract
Axially chiral compounds are widespread in biologically active compounds and are useful chiral ligands or organocatalysts in asymmetric catalysis. It is well-known that styrenes are one of the most abundant and principal feedstocks and thus represent excellent prospective building blocks for chemical synthesis. Driven by the development of atroposelective synthesis of axially chiral styrene derivatives, we discovered herein the asymmetric organocatalytic approach via direct Michael addition reaction of substituted diones/ketone esters/malononitrile to alkynals. The axially chiral styrene compounds were produced with good chemical yields, enantioselectivities and almost complete E/Z-selectivities through a secondary amine-catalysed iminium activation strategy under mild conditions. Such structural motifs are important precursors for further transformations into biologically active compounds and synthetic useful intermediates and may have potential applications in asymmetric synthesis as olefin ligands or organocatalysts. Many methods exist for the atroposelective synthesis of axially chiral biaryls, but axially chiral styrenes are much less explored. Here the authors report an organocatalytic procedure for the synthesis of configurationally stable, axially chiral styrenes with high enantio- and diastereoselectivities.
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421
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Matsuoka M, Goto M, Wzorek A, Soloshonok VA, Kitagawa O. Diastereoselective α-Alkylation of Metallo Enamines Generated from N-C Axially Chiral Mebroqualone Derivatives. Org Lett 2017; 19:2650-2653. [PMID: 28459589 DOI: 10.1021/acs.orglett.7b00998] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactions of various alkyl halides with the metallo enamines generated from racemic and optically pure N-C axially chiral mebroqualone derivatives were found to proceed with a synthetically attractive stereochemical outcome (up to 99% yield and up to dr = 26:1) allowing preparation of a structurally new type of pharmaceutically interesting compounds possessing elements of axial and central chirality.
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Affiliation(s)
- Mizuki Matsuoka
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo, 135-8548, Japan
| | - Mitsuhiro Goto
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo, 135-8548, Japan
| | - Alicja Wzorek
- Institute of Chemistry, Jan Kochanowski University in Kielce , Świętokrzyska 15G, 25-406 Kielce, Poland
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU , Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo, 135-8548, Japan
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422
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Kumarasamy E, Kandappa SK, Raghunathan R, Jockusch S, Sivaguru J. Realizing an Aza Paternò–Büchi Reaction. Angew Chem Int Ed Engl 2017; 56:7056-7061. [DOI: 10.1002/anie.201702273] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Elango Kumarasamy
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Sunil Kumar Kandappa
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Ramya Raghunathan
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Steffen Jockusch
- Department of Chemistry Columbia University New York NY 10027 USA
| | - Jayaraman Sivaguru
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
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423
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Kumarasamy E, Kandappa SK, Raghunathan R, Jockusch S, Sivaguru J. Realizing an Aza Paternò–Büchi Reaction. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702273] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Elango Kumarasamy
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Sunil Kumar Kandappa
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Ramya Raghunathan
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
| | - Steffen Jockusch
- Department of Chemistry Columbia University New York NY 10027 USA
| | - Jayaraman Sivaguru
- Department of Chemistry and Biochemistry North Dakota State University Fargo ND 58108 USA
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424
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Ding Q, Wang Q, He H, Cai Q. Asymmetric Synthesis of (−)-Pterocarine and (−)-Galeon via Chiral Phase Transfer-Catalyzed Atropselective Formation of Diarylether Cyclophane Skeleton. Org Lett 2017; 19:1804-1807. [PMID: 28345937 DOI: 10.1021/acs.orglett.7b00570] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qiang Ding
- College
of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Qiuyan Wang
- College
of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, 510632, China
- College
of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Huan He
- College
of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, 510632, China
- College
of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Qian Cai
- College
of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou, 510632, China
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425
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Sakai T, Matsuoka J, Shintai M, Mori Y. C Ar-O Rotamers in 3,3'-Disubstituted BINOL Esters. J Org Chem 2017; 82:3276-3283. [PMID: 28226205 DOI: 10.1021/acs.joc.6b03035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rotamers around the CAr-O bond were disclosed in 3,3'-disubstituted BINOL esters by NMR spectroscopy. A bulky R1 group increased the rotational barrier. The pivalate showed two rotamers at 2 °C, and broad signals were observed close to room temperature when R2 = Ph. The highest rotational barrier was recorded for the (tetracyanocyclopentadienyl)carboxylate, and C-O rotamers were present at room temperature. DFT calculations indicated the presence of repulsion between R1 and R2 during rotation of the CAr-O bond.
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Affiliation(s)
- Takeo Sakai
- Faculty of Pharmacy, Meijo University , 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Junpei Matsuoka
- Faculty of Pharmacy, Meijo University , 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Masayuki Shintai
- Faculty of Pharmacy, Meijo University , 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
| | - Yuji Mori
- Faculty of Pharmacy, Meijo University , 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan
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426
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A Quest for Atropisomerism in Cojoined Square‐Planar Metal Complexes: Synthesis and Structures of Sterically Congested Diplatinum Ethynediyl Adducts. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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427
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Raut VS, Jean M, Vanthuyne N, Roussel C, Constantieux T, Bressy C, Bugaut X, Bonne D, Rodriguez J. Enantioselective Syntheses of Furan Atropisomers by an Oxidative Central-to-Axial Chirality Conversion Strategy. J Am Chem Soc 2017; 139:2140-2143. [DOI: 10.1021/jacs.6b11079] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vivek S. Raut
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Christian Roussel
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | | | - Cyril Bressy
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Damien Bonne
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
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428
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Jia ZJ, Merten C, Gontla R, Daniliuc CG, Antonchick AP, Waldmann H. General Enantioselective C−H Activation with Efficiently Tunable Cyclopentadienyl Ligands. Angew Chem Int Ed Engl 2017; 56:2429-2434. [DOI: 10.1002/anie.201611981] [Citation(s) in RCA: 241] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Zhi-Jun Jia
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
| | - Christian Merten
- Ruhr-Universität Bochum; Lehrstuhl für Organische Chemie II; Universitätsstrasse 150 44801 Bochum Germany
| | - Rajesh Gontla
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Constantin G. Daniliuc
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Andrey P. Antonchick
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
| | - Herbert Waldmann
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
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429
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Jia ZJ, Merten C, Gontla R, Daniliuc CG, Antonchick AP, Waldmann H. General Enantioselective C−H Activation with Efficiently Tunable Cyclopentadienyl Ligands. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611981] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Zhi-Jun Jia
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
| | - Christian Merten
- Ruhr-Universität Bochum; Lehrstuhl für Organische Chemie II; Universitätsstrasse 150 44801 Bochum Germany
| | - Rajesh Gontla
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Constantin G. Daniliuc
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Andrey P. Antonchick
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
| | - Herbert Waldmann
- Max-Planck-Institut für Molekulare Physiologie; Abteilung Chemische Biologie; Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Technische Universität Dortmund; Fakultät Chemie und Chemische Biologie, Chemische Biologie; Otto-Hahn-Strasse 4a 44227 Dortmund Germany
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430
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Zhang L, Zhang J, Ma J, Cheng DJ, Tan B. Highly Atroposelective Synthesis of Arylpyrroles by Catalytic Asymmetric Paal–Knorr Reaction. J Am Chem Soc 2017; 139:1714-1717. [DOI: 10.1021/jacs.6b09634] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Lei Zhang
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
- Key
Laboratory of Biomedical Polymers of Ministry of Education, College
of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
| | - Jian Zhang
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Ji Ma
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Dao-Juan Cheng
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Bin Tan
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
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431
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Nimmagadda SK, Mallojjala SC, Woztas L, Wheeler SE, Antilla JC. Enantioselective Synthesis of Chiral Oxime Ethers: Desymmetrization and Dynamic Kinetic Resolution of Substituted Cyclohexanones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sri Krishna Nimmagadda
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | | | - Lukasz Woztas
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77843 USA
| | - Jon C. Antilla
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
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432
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Nimmagadda SK, Mallojjala SC, Woztas L, Wheeler SE, Antilla JC. Enantioselective Synthesis of Chiral Oxime Ethers: Desymmetrization and Dynamic Kinetic Resolution of Substituted Cyclohexanones. Angew Chem Int Ed Engl 2017; 56:2454-2458. [DOI: 10.1002/anie.201611602] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Sri Krishna Nimmagadda
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | | | - Lukasz Woztas
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77843 USA
| | - Jon C. Antilla
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
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433
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Carbó López M, Chavant PY, Molton F, Royal G, Blandin V. Chiral Nitroxide/Copper-Catalyzed Aerobic Oxidation of Alcohols: Atroposelective Oxidative Desymmetrization. ChemistrySelect 2017. [DOI: 10.1002/slct.201601993] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marta Carbó López
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Pierre Y. Chavant
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Florian Molton
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Guy Royal
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
| | - Véronique Blandin
- Univ. Grenoble Alpes; DCM UMR-5250; F-38000 Grenoble France
- CNRS; DCM UMR-5250; F-38000 Grenoble France
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434
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Prades A, Núñez-Pertíñez S, Riera A, Verdaguer X. P-Stereogenic bisphosphines with a hydrazine backbone: from N–N atropoisomerism to double nitrogen inversion. Chem Commun (Camb) 2017; 53:4605-4608. [DOI: 10.1039/c7cc01944k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
P-Stereogenic C2 diphosphine ligands with a hydrazine backbone are reported. The ligands exist as a mixture of atropo- and nitrogen inversion isomers in slow exchange.
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Affiliation(s)
- Amparo Prades
- Institute for Research in Biomedicine (IRB Barcelona)
- The Barcelona Institute of Science and Technology
- Spain
| | - Samuel Núñez-Pertíñez
- Institute for Research in Biomedicine (IRB Barcelona)
- The Barcelona Institute of Science and Technology
- Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona)
- The Barcelona Institute of Science and Technology
- Spain
- Dept. Química Inorgànica i Orgànica
- Secció de Química Orgànica
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona)
- The Barcelona Institute of Science and Technology
- Spain
- Dept. Química Inorgànica i Orgànica
- Secció de Química Orgànica
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435
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Nakazaki A. Asymmetric Synthesis of 3,3-Disubstituted Oxindoles from <i>N</i>-Aryl Oxindole Derivatives bearing C-N Axial Chirality. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences, Nagoya University
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436
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Bonne D, Rodriguez J. Enantioselective syntheses of atropisomers featuring a five-membered ring. Chem Commun (Camb) 2017; 53:12385-12393. [DOI: 10.1039/c7cc06863h] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
If six-membered ring biaryl or heterobiaryl atropisomers are the most common ones, the focus of this feature article will be put on the enantioselective approaches towards five-membered ring containing atropisomers displaying either a stereogenic C–N- or C–C bond.
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Affiliation(s)
- Damien Bonne
- Aix Marseille Univ
- CNRS, Centrale Marseille, iSm2
- Marseille
- France
| | - Jean Rodriguez
- Aix Marseille Univ
- CNRS, Centrale Marseille, iSm2
- Marseille
- France
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437
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Mayo RA, Sullivan DJ, Fillion TAP, Kycia SW, Soldatov DV, Preuss KE. Reversible crystal-to-crystal chiral resolution: making/breaking non-bonding S⋯O interactions. Chem Commun (Camb) 2017; 53:3964-3966. [DOI: 10.1039/c7cc00907k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Unconventional non-covalent interactions are the key to reversible chiral resolution in polycrystalline samples of a small, achiral molecule.
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Affiliation(s)
- R. Alex Mayo
- Department of Chemistry
- University of Guelph
- Guelph
- Canada
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438
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Etayo P, Escudero-Adán EC, Pericàs MA. 5,5′-Bistriazoles as axially chiral, multidentate ligands: synthesis, configurational stability and catalytic application of their scandium(iii) complexes. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01518f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The design and development of 5,5′-bistriazoles featuring aminomethyl substituents is discussed.
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Affiliation(s)
- Pablo Etayo
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology (BIST)
- E-43007 Tarragona
- Spain
| | - Eduardo C. Escudero-Adán
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology (BIST)
- E-43007 Tarragona
- Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology (BIST)
- E-43007 Tarragona
- Spain
- Departament de Química Inorgànica i Orgànica
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439
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Kumarasamy E, Raghunathan R, Kandappa SK, Sreenithya A, Jockusch S, Sunoj RB, Sivaguru J. Transposed Paternò–Büchi Reaction. J Am Chem Soc 2016; 139:655-662. [DOI: 10.1021/jacs.6b05936] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elango Kumarasamy
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Ramya Raghunathan
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sunil Kumar Kandappa
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - A. Sreenithya
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076. India
| | - Steffen Jockusch
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Raghavan B Sunoj
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076. India
| | - J. Sivaguru
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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440
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Kumarasamy E, Ayitou AJL, Vallavoju N, Raghunathan R, Iyer A, Clay A, Kandappa SK, Sivaguru J. Tale of Twisted Molecules. Atropselective Photoreactions: Taming Light Induced Asymmetric Transformations through Non-biaryl Atropisomers. Acc Chem Res 2016; 49:2713-2724. [PMID: 27993011 DOI: 10.1021/acs.accounts.6b00357] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Photochemical transformations are a powerful tool in organic synthesis to access structurally complex and diverse synthetic building blocks. However, this great potential remains untapped in the mainstream synthetic community due to the challenges associated with stereocontrol originating from excited state(s). The finite lifetime of an excited state and nearly barrierless subsequent processes present significant challenges in manipulating the stereochemical outcome of a photochemical reaction. Several methodologies were developed to address this bottleneck including photoreactions in confined media and preorganization through noncovalent interactions resulting in stereoenhancement. Yet, stereocontrol in photochemical reactions that happen in solution in the absence of organized assemblies remained largely unaddressed. In an effort to develop a general and reliable methodology, our lab has been exploring non-biaryl atropisomers as an avenue to perform asymmetric phototransformations. Atropisomers are chiral molecules that arise due to the restricted rotation around a single bond (chiral axis) whose energy barrier to rotation is determined by nonbonding interactions (most often by steric hindrance) with appropriate substituents. Thus, atropisomeric substrates are chirally preorganized during the photochemical transformation and translate their chiral information to the expected photoproducts. This strategy, where "axial to point chirality transfer" occurs during the photochemical reaction, is a hybrid of the successful Curran's prochiral auxiliary approach involving atropisomers in thermal reactions and the Havinga's NEER principle (nonequilibrating excited-state rotamers) for photochemical transformations. We have investigated this strategy in order to probe various aspects such as regio-, enantio-, diastereo-, and chemoselectivity in several synthetically useful phototransformations including 6π-photocyclization, 4π-ring closure, Norrish-Yang photoreactions, Paternò-Büchi reaction, and [2 + 2]- and [5 + 2]-photocycloaddition. The investigations detailed in this Account clearly signify the scope of our strategy in accessing chirally enriched products during phototransformations. Simple design modifications such as tailoring the steric handle in atropisomers to hold reactive units resulted in permanently locked/traceless axial chirality in addition to incorporating multiple stereocenters in already complex scaffolds obtained from phototransformation. Further improvements allowed us to employ low energy visible light rather than high energy UV light without compromising the stereoenrichment in the photoproducts. Continued investigations on atropisomeric scaffolds have unraveled new design features, with outcomes that are unique and unprecedented for excited state reactivity. For example, we have established that reactive spin states (singlet or triplet excited state) profoundly influence the stereochemical outcome of an atropselective phototransformation. In general, the photochemistry and photophysics of atropisomeric substrates differ significantly from their achiral counterparts irrespective of having the same chromophore initiating the excited state reactivity. The ability of axially chiral chromophores to impart stereoenrichment in the intramolecular photoreactions appears to be promising. A challenging endeavor for the "axial to point chirality transfer" strategy is to enhance stereoenrichment or alter chemical reactivity in intermolecular photoreactions. Insights gained from our investigations will serve as a platform to venture into more complicated yet fruitful research in terms of broad synthetic utility.
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Affiliation(s)
- Elango Kumarasamy
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Anoklase Jean-Luc Ayitou
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Nandini Vallavoju
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Ramya Raghunathan
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Akila Iyer
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Anthony Clay
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sunil Kumar Kandappa
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Jayaraman Sivaguru
- Department of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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441
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Li S, Zhang JW, Li XL, Cheng DJ, Tan B. Phosphoric Acid-Catalyzed Asymmetric Synthesis of SPINOL Derivatives. J Am Chem Soc 2016; 138:16561-16566. [DOI: 10.1021/jacs.6b11435] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shaoyu Li
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Ji-Wei Zhang
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Xian-Lin Li
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Dao-Juan Cheng
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
| | - Bin Tan
- Department
of Chemistry, South University of Science and Technology of China, Shenzhen 518055, China
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442
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Raghunathan R, Jockusch S, Sibi MP, Sivaguru J. Evaluating thiourea/urea catalyst for enantioselective 6π-photocyclization of acrylanilides. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.12.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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443
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Hirai M, Terada S, Yoshida H, Ebine K, Hirata T, Kitagawa O. Catalytic Enantioselective Synthesis of N-C Axially Chiral Mebroqualone and Its Derivatives through Reductive Asymmetric Desymmetrization. Org Lett 2016; 18:5700-5703. [PMID: 27783530 DOI: 10.1021/acs.orglett.6b02865] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the presence of (R)-DTBM-SEGPHOS-Pd(OAc)2 catalyst, treatment of various 3-(2,6-dibromophenyl)quinazolin-4-ones with NaBH4 gave optically active N-C axially chiral quinazolinone (mebroqualone) derivatives through reductive asymmetric desymmetrization (enantioselective monohydrodebromination) followed by kinetic resolution of the resulting monobromophenyl products (up to 99% ee). The enantioselectivity strongly depended on the substituent (R2) at the C4'position, amount of NaBH4, and reaction temperature.
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Affiliation(s)
- Motohiro Hirai
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Shumpei Terada
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Hiroaki Yoshida
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Kenki Ebine
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Tomoaki Hirata
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
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444
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Nakazaki A, Mori A, Kobayashi S, Nishikawa T. A Divergent Approach to the Diastereoselective Synthesis of 3,3-Disubstituted Oxindoles from AtropisomericN-Aryl Oxindole Derivatives. Chem Asian J 2016; 11:3267-3274. [DOI: 10.1002/asia.201601183] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
| | - Ayako Mori
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
| | - Susumu Kobayashi
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki, Noda Chiba 278-8510 Japan
| | - Toshio Nishikawa
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
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445
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Bootsma AN, Anderson CE. Computational and experimental evaluation of α-(N-2-quinolonyl)ketones: a new class of nonbiaryl atropisomers. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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446
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Wang J, Chen MW, Ji Y, Hu SB, Zhou YG. Kinetic Resolution of Axially Chiral 5- or 8-Substituted Quinolines via Asymmetric Transfer Hydrogenation. J Am Chem Soc 2016; 138:10413-6. [DOI: 10.1021/jacs.6b06009] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jie Wang
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Mu-Wang Chen
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Yue Ji
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Shu-Bo Hu
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Yong-Gui Zhou
- State Key
Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
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447
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Shi J, Wu J, Cui C, Dai WM. Microwave-Assisted Intramolecular Ullmann Diaryl Etherification as the Post-Ugi Annulation for Generation of Dibenz[b,f][1,4]oxazepine Scaffold. J Org Chem 2016; 81:10392-10403. [DOI: 10.1021/acs.joc.6b01398] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianyu Shi
- Laboratory
of Asymmetric Catalysis and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. of China
| | - Jinlong Wu
- Laboratory
of Asymmetric Catalysis and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. of China
| | - Chengsen Cui
- Laboratory
of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. of China
| | - Wei-Min Dai
- Laboratory
of Asymmetric Catalysis and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. of China
- Laboratory
of Advanced Catalysis and Synthesis, Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. of China
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448
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Substituent effects on axial chirality in 1-aryl-3,4-dihydroisoquinolines: controlling the rate of bond rotation. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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449
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Di Iorio N, Champavert F, Erice A, Righi P, Mazzanti A, Bencivenni G. Targeting remote axial chirality control of N-(2-tert-butylphenyl)succinimides by means of Michael addition type reactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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450
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Vallavoju N, Sreenithya A, Ayitou AJ, Jockusch S, Sunoj RB, Sivaguru J. Photoreactions with a Twist: Atropisomerism‐Driven Divergent Reactivity of Enones with UV and Visible Light. Chemistry 2016; 22:11339-48. [DOI: 10.1002/chem.201601509] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Nandini Vallavoju
- Department of Chemistry and Biochemistry North Dakota State University 1231 Albrecht Blvd. Fargo ND 58108-6050 USA
| | - Avadakkam Sreenithya
- Department of Chemistry Indian Institute of Technology Bombay Mumbai 400076 India
| | - Anoklase J.‐L. Ayitou
- Department of Chemistry and Biochemistry North Dakota State University 1231 Albrecht Blvd. Fargo ND 58108-6050 USA
| | - Steffen Jockusch
- Department of Chemistry Columbia University New York NY 10027 USA
| | - Raghavan B. Sunoj
- Department of Chemistry Indian Institute of Technology Bombay Mumbai 400076 India
| | - Jayaraman Sivaguru
- Department of Chemistry and Biochemistry North Dakota State University 1231 Albrecht Blvd. Fargo ND 58108-6050 USA
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