1
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Wang Y, Huang Y, Bao X, Wei X, Wei S, Qu J, Wang B. Organocatalytic diastereo- and atropo-selective construction of eight-membered bridged (hetero)biaryls via asymmetric intramolecular [3 + 2] cycloaddition. Chem Sci 2024; 15:8880-8887. [PMID: 38873056 PMCID: PMC11168085 DOI: 10.1039/d4sc01892c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/07/2024] [Indexed: 06/15/2024] Open
Abstract
An unprecedented and straightforward route for the asymmetric construction of privileged atroposelective bridged (hetero)biaryl eight-membered scaffolds has been accomplished through chiral phosphoric acid catalyzed asymmetric intramolecular [3 + 2] cycloaddition of innovative (hetero)biaryl aldehydes with 3-aminooxindole hydrochlorides. A class of eight-membered bridged (hetero)biaryl lactones fused to spiro[pyrrolidine-oxindole] derivatives, possessing both chiral C-C/C-N axes and multiple contiguous stereocenters, were obtained in good yields with excellent enantioselectivities and diastereoselectivities in one step through this direct strategy. In addition, the good scalability and derivatization of the title compounds demonstrated their synthetic utility.
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Affiliation(s)
- Yue Wang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Yue Huang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Xingfu Wei
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Shiqiang Wei
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Jingping Qu
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
| | - Baomin Wang
- Department of Pharmaceutical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology Dalian 116024 P. R. China
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2
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Chand S, Sharma AK, Pandey AK, Singh KN. Visible-Light Photoredox-Catalyzed Synthesis of trans-Oxiranes via Decarboxylative Stereospecific Epoxidation of trans-Cinnamic Acids by Aryldiazonium Salts. Org Lett 2022; 24:6423-6427. [DOI: 10.1021/acs.orglett.2c02509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Shiv Chand
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anup Kumar Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anand Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Krishna Nand Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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3
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Rodríguez-Salamanca P, Martín-de la Calle R, Rodríguez V, Merino P, Fernández R, Lassaletta JM, Hornillos V. Asymmetric synthesis of dibenzo[ b, d]azepines by Cu-catalyzed reductive or borylative cyclization. Chem Sci 2021; 12:15291-15297. [PMID: 34976349 PMCID: PMC8635211 DOI: 10.1039/d1sc04980a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
A copper-catalyzed asymmetric intramolecular reductive cyclization for the synthesis of dibenzo[b,d]azepines is described. Use of 2'-vinyl-biaryl-2-imines as substrates and in situ formed [CuI/(Ph-BPE)] as the catalyst enables the synthesis of 7-membered bridged biarylamines containing both central and axial stereogenic elements in high yields (up to 98%) and with excellent diastereo- and enantioselectivities (>20 : 1 d.r., up to 99% ee). Moreover, the same catalyst was found to facilitate a related borylative cyclization to afford versatile boronic ester derivatives. Both reactions proceed under mild conditions (rt) and are applicable to a variety of substituted aromatic and heterocyclic derivatives.
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Affiliation(s)
| | | | - Verónica Rodríguez
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza 50009 Zaragoza Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
| | - José M Lassaletta
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain
| | - Valentín Hornillos
- Instituto Investigaciones Químicas (CSIC-US) C/Américo Vespucio, 49 41092 Sevilla Spain .,Departamento de Química Orgánica, Universidad de Sevilla C/Prof. García González, 1 41012 Sevilla Spain
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4
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Feng H, Wang F, Cao L, Van der Eycken EV, Yin X. Switchable Mono‐ and Dipropargylation of Amino Alcohols: A Unique Property of the Iodide Anion in Controlling Ring‐Opening Alkynylation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Huangdi Feng
- Department College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai 201620 China
| | - Fang Wang
- Department College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai 201620 China
| | - Leilei Cao
- Department College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai 201620 China
| | - Erik V. Van der Eycken
- Department of Chemistry KU Leuven Celestijnenlaan 200F, Leuven 3001 Belgium
- Peoples' Friendship University of Russia RUDN University) 6 Miklukho-Maklaya Street Moscow 117198 Russia
| | - Xiaoying Yin
- Department College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai 201620 China
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5
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Kaur M, Garg S, Malhi DS, Sohal HS. A Review on Synthesis, Reactions and Biological Properties of Seven Membered Heterocyclic Compounds: Azepine, Azepane, Azepinone. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825999210104222338] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Seven membered heterocyclic Azepine and its derivatives have great pharmacological
and therapeutic implications. In this review, the literature of the last fifty years has
been exploited for the synthesis, reaction, and biological properties of these seven-member
heterocyclic compounds. Most of the mechanisms involved the ring expansion of either five
or six-membered compounds using various methods such as thermally, photo-chemically, and
microwave irradiation. The systematically designed schemes involve the synthesis of different
derivatives of azepine, azepinone, azepane, etc., using similar moieties by various researchers.
However, there is much work yet to be done in the biological section, as it is not
explored and reported in the literature; therefore, N-containing seven-membered heterocycles
still have much scope for the researchers.
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Affiliation(s)
- Manvinder Kaur
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Sonali Garg
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Dharambeer S. Malhi
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
| | - Harvinder S. Sohal
- Department of Chemistry, Chandigarh University, Gharuan-140413, Mohali, Punjab, India
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6
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Abstract
This review concentrates on success stories from the synthesis of approved medicines and drug candidates using epoxide chemistry in the development of robust and efficient syntheses at large scale. The focus is on those parts of each synthesis related to the substrate-controlled/diastereoselective and catalytic asymmetric synthesis of epoxide intermediates and their subsequent ring-opening reactions with various nucleophiles. These are described in the form of case studies of high profile pharmaceuticals spanning a diverse range of indications and molecular scaffolds such as heterocycles, terpenes, steroids, peptidomimetics, alkaloids and main stream small molecules. Representative examples include, but are not limited to the antihypertensive diltiazem, the antidepressant reboxetine, the HIV protease inhibitors atazanavir and indinavir, efinaconazole and related triazole antifungals, tasimelteon for sleep disorders, the anticancer agent carfilzomib, the anticoagulant rivaroxaban the antibiotic linezolid and the antiviral oseltamivir. Emphasis is given on aspects of catalytic asymmetric epoxidation employing metals with chiral ligands particularly with the Sharpless and Jacobsen–Katsuki methods as well as organocatalysts such as the chiral ketones of Shi and Yang, Pages’s chiral iminium salts and typical chiral phase transfer agents.
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7
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Zhang Y, Liu YQ, Hu L, Zhang X, Yin Q. Asymmetric Reductive Amination/Ring-Closing Cascade: Direct Synthesis of Enantioenriched Biaryl-Bridged NH Lactams. Org Lett 2020; 22:6479-6483. [PMID: 32806148 DOI: 10.1021/acs.orglett.0c02282] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here a Ru-catalyzed enantioselective synthesis of biaryl-bridged NH lactams through asymmetric reductive amination and a spontaneous ring-closing cascade from keto esters and NH4OAc with H2 as reductant. The reaction features broad substrate generality and high enantioselectivities (up to >99% ee). To showcase the practical utility, a highly enantioselective synthesis of 5-ethylindolobenzazepinone C, a promising antimitotic agent, has been rapidly completed. Furthermore, the amide group in the products enables versatile elaborations through directed C-H functionalization.
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Affiliation(s)
- Yao Zhang
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yun-Qi Liu
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Le'an Hu
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xumu Zhang
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qin Yin
- Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, China
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8
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Shirbhate ME, Kwon S, Song A, Kim S, Kim D, Huang H, Kim Y, Lee H, Kim SJ, Baik MH, Yoon J, Kim KM. Optical and Fluorescent Dual Sensing of Aminoalcohols by in Situ Generation of BODIPY-like Chromophore. J Am Chem Soc 2020; 142:4975-4979. [DOI: 10.1021/jacs.9b13232] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mukesh Eknath Shirbhate
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Seongyeon Kwon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Ayoung Song
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Seungha Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dayeh Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Haofei Huang
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China
| | - Youngmee Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Hanna Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sung-Jin Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Juyoung Yoon
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Kwan Mook Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
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9
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Abstract
A simple approach to synthesize 4b,5,6,9-tetrahydro-7H-dibenzo[c,e]pyrrolo[1,2-a]azepin- 7-one has been developed, based on a three-step transformation of 2-(2-bromophenyl)cyclopropane-1,1-diester. The key stage in this method is an intramolecular cross-coupling of 1-(2-bromobenzyl)-5-(2-bromophenyl)pyrrolidin-2-one under continuous flow conditions in an H-Сube-Pro using commercially available supported Pd catalysts.
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10
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Yang T, Guo X, Yin Q, Zhang X. Intramolecular asymmetric reductive amination: synthesis of enantioenriched dibenz[ c, e]azepines. Chem Sci 2018; 10:2473-2477. [PMID: 30881676 PMCID: PMC6385856 DOI: 10.1039/c8sc04482a] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 12/21/2018] [Indexed: 01/11/2023] Open
Abstract
An enantioselective synthesis of dibenz[c,e]azepines containing both central and axial chiralities through a one pot N-Boc deprotection/intramolecular asymmetric reductive amination sequence has been achieved with generally excellent enantiocontrol (up to 97% ee).
An Ir-catalyzed intramolecular asymmetric reductive amination (ARA) of bridged biaryl derivatives has been described. Using this unprecedented approach, synthetically useful dibenz[c,e]azepines containing both central and axial chiralities are obtained with excellent enantiocontrol (up to 97% ee). This methodology represents a rare example of enantioselective chemocatalytic synthesis of chiral dibenz[c,e]azepines featuring a broad substrate scope, and their synthetic utilities are exhibited by derivatizing the products into a chiral amino acid derivative and chiral phosphoramidite ligands, which display excellent enantiocontrol in Rh-catalyzed asymmetric hydrogenation of α-dehydroamino acid derivatives. Remarkably, our method is also applicable to enantioselectively synthesize an allocolchicine analogue.
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Affiliation(s)
- Tao Yang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Xiaochong Guo
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Qin Yin
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China . .,SUSTech Academy for Advanced Interdisciplinary Studies , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , People's Republic of China .
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11
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France SP, Aleku GA, Sharma M, Mangas-Sanchez J, Howard RM, Steflik J, Kumar R, Adams RW, Slabu I, Crook R, Grogan G, Wallace TW, Turner NJ. Biocatalytic Routes to Enantiomerically Enriched Dibenz[c
,e
]azepines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708453] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Scott P. France
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Godwin A. Aleku
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Mahima Sharma
- York Structural Biology Laboratory; Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Juan Mangas-Sanchez
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Roger M. Howard
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
- Sandwich Laboratories; Pfizer Worldwide Research and Development; Discovery Park Sandwich, Kent CT13 9NJ UK
| | - Jeremy Steflik
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
| | - Rajesh Kumar
- Groton Laboratories; Pfizer Worldwide Research and Development; 445 Eastern Point Road Groton CT 06340 USA
| | - Ralph W. Adams
- School of Chemistry; University of Manchester; Manchester M13 9PL UK
| | - Iustina Slabu
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
| | - Robert Crook
- Sandwich Laboratories; Pfizer Worldwide Research and Development; Discovery Park Sandwich, Kent CT13 9NJ UK
| | - Gideon Grogan
- York Structural Biology Laboratory; Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | | | - Nicholas J. Turner
- School of Chemistry; University of Manchester; Manchester Institute of Biotechnology; 131 Princess Street Manchester M17DN UK
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12
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France SP, Aleku GA, Sharma M, Mangas-Sanchez J, Howard RM, Steflik J, Kumar R, Adams RW, Slabu I, Crook R, Grogan G, Wallace TW, Turner NJ. Biocatalytic Routes to Enantiomerically Enriched Dibenz[c,e]azepines. Angew Chem Int Ed Engl 2017; 56:15589-15593. [PMID: 29024400 DOI: 10.1002/anie.201708453] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Indexed: 11/11/2022]
Abstract
Biocatalytic retrosynthetic analysis of dibenz[c,e]azepines has highlighted the use of imine reductase (IRED) and ω-transaminase (ω-TA) biocatalysts to establish the key stereocentres of these molecules. Several enantiocomplementary IREDs were identified for the synthesis of (R)- and (S)-5-methyl-6,7-dihydro-5H-dibenz[c,e]azepine with excellent enantioselectivity, by reduction of the parent imines. Crystallographic evidence suggests that IREDs may be able to bind one conformer of the imine substrate such that, upon reduction, the major product conformer is generated directly. ω-TA biocatalysts were also successfully employed for the production of enantiopure 1-(2-bromophenyl)ethan-1-amine, thus enabling an orthogonal route for the installation of chirality into dibenz[c,e]azepine framework.
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Affiliation(s)
- Scott P France
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Godwin A Aleku
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Mahima Sharma
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Juan Mangas-Sanchez
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Roger M Howard
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA.,Sandwich Laboratories, Pfizer Worldwide Research and Development, Discovery Park, Sandwich, Kent, CT13 9NJ, UK
| | - Jeremy Steflik
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA
| | - Rajesh Kumar
- Groton Laboratories, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, CT, 06340, USA
| | - Ralph W Adams
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Iustina Slabu
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
| | - Robert Crook
- Sandwich Laboratories, Pfizer Worldwide Research and Development, Discovery Park, Sandwich, Kent, CT13 9NJ, UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Timothy W Wallace
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Nicholas J Turner
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M17DN, UK
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13
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Bulman Page PC, Chan Y, Noor Armylisas AH, Alahmdi M. Asymmetric epoxidation of chromenes mediated by iminium salts: Synthesis of mollugin and (3S,4R)-trans-3,4-dihydroxy-3,4-dihydromollugin. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Day DP, Sellars PB. Recent Advances in Iminium-Salt-Catalysed Asymmetric Epoxidation. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600908] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David P. Day
- Department of Chemistry; University of Warwick; CV4 7AL Coventry U.K
| | - Philip B. Sellars
- Department of Chemistry; University of Warwick; CV4 7AL Coventry U.K
- WMG; University of Warwick; CV4 7AL Coventry U.K
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15
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Meyer AG, Smith JA, Hyland C, Williams CC, Bissember AC, Nicholls TP. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/b978-0-08-100755-6.00016-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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