1
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Liang Y, Huang H, Huang N, Liao L, Zhao X. Catalytic Enantioselective Construction of Chiral γ-Azido Nitriles through Nitrile Group-Promoted Electrophilic Reaction of Alkenes. Org Lett 2023; 25:6757-6762. [PMID: 37656917 DOI: 10.1021/acs.orglett.3c02650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
An efficient approach for the construction of enantioenriched γ-azido nitriles through the chiral sulfide-catalyzed asymmetric electrophilic thioazidation of allylic nitriles is disclosed. A wide range of electron-deficient and -rich aryl, heterocyclic aryl, and alkyl substituents are suitable on the substrates of allylic nitriles. The regio-, enantio-, and diastereoselectivities of the reactions are excellent. As versatile platform molecules, the obtained chiral γ-azido nitriles can be easily converted into high-value-added chiral molecules that are not easily accessed by other methods. Control experiments revealed that the allylic nitrile group is important for control of the reactivity and enantioselectivity of the reaction leading to a broad substrate scope.
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Affiliation(s)
- Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Hongtai Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Nan Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Lihao Liao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
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2
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Braddock DC, Lancaster BMJ, Tighe CJ, White AJP. Surmounting Byproduct Inhibition in an Intermolecular Catalytic Asymmetric Alkene Bromoesterification Reaction as Revealed by Kinetic Profiling. J Org Chem 2023. [PMID: 37327488 DOI: 10.1021/acs.joc.3c00672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Kinetic profiling has shown that a (DHQD)2PHAL-catalyzed intermolecular asymmetric alkene bromoesterification reaction is inhibited by primary amides, imides, hydantoins, and secondary cyclic amides, which are byproducts of common stoichiometric bromenium ion sources. Two approaches to resolving the inhibition are presented, enabling the (DHQD)2PHAL loading to be dropped from 10 to 1 mol % while maintaining high bromoester conversions in 8 h or less. Iterative post-reaction recrystallizations enabled a homochiral bromonaphthoate ester to be synthesized using only 1 mol % (DHQD)2PHAL.
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Affiliation(s)
- D Christopher Braddock
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London W12 0BZ, U.K
| | - Ben M J Lancaster
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London W12 0BZ, U.K
| | - Christopher J Tighe
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, Imperial College Road, London SW7 2AZ, U.K
| | - Andrew J P White
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London W12 0BZ, U.K
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3
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Bock J, Guria S, Wedek V, Hennecke U. Enantioselective Dihalogenation of Alkenes. Chemistry 2021; 27:4517-4530. [DOI: 10.1002/chem.202003176] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/01/2020] [Indexed: 01/17/2023]
Affiliation(s)
- Jonathan Bock
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Sudip Guria
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Volker Wedek
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Ulrich Hennecke
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
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4
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Li J, Shi Y. Catalytic enantioselective bromohydroxylation of cinnamyl alcohols. RSC Adv 2021; 11:13040-13046. [PMID: 35423889 PMCID: PMC8697332 DOI: 10.1039/d1ra02297k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 11/21/2022] Open
Abstract
This work describes an effective enantioselective bromohydroxylation of cinnamyl alcohols with (DHQD)2PHAL as the catalyst and H2O as the nucleophile, providing a variety of corresponding optically active bromohydrins with up to 95% ee. Optically active bromohydrins are obtained with up to 95% ee via asymmetric bromohydroxylation of cinnamyl alcohols with H2O as nucleophile.![]()
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Affiliation(s)
- Jing Li
- Institute of Natural and Synthetic Organic Chemistry
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Yian Shi
- Institute of Natural and Synthetic Organic Chemistry
- Changzhou University
- Changzhou 213164
- P. R. China
- Department of Chemistry
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5
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Steigerwald DC, Soltanzadeh B, Sarkar A, Morgenstern CC, Staples RJ, Borhan B. Ritter-enabled catalytic asymmetric chloroamidation of olefins. Chem Sci 2020; 12:1834-1842. [PMID: 34163947 PMCID: PMC8179065 DOI: 10.1039/d0sc05224h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Intermolecular asymmetric haloamination reactions are challenging due to the inherently high halenium affinity (HalA) of the nitrogen atom, which often leads to N-halogenated products as a kinetic trap. To circumvent this issue, acetonitrile, possessing a low HalA, was used as the nucleophile in the catalytic asymmetric Ritter-type chloroamidation of allyl-amides. This method is compatible with Z and E alkenes with both alkyl and aromatic substitution. Mild acidic workup reveals the 1,2-chloroamide products with enantiomeric excess greater than 95% for many examples. We also report the successful use of the sulfonamide chlorenium reagent dichloramine-T in this chlorenium-initiated catalytic asymmetric Ritter-type reaction. Facile modifications lead to chiral imidazoline, guanidine, and orthogonally protected 1,2,3 chiral tri-amines. Intermolecular haloamination reactions are challenging due to the high halenium affinity of the nitrogen atom. This is circumvented by using acetonitrile as an attenuated nucleophile, resulting in an enantioselective halo-Ritter reaction.![]()
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Affiliation(s)
| | - Bardia Soltanzadeh
- Michigan State University, Department of Chemistry East Lansing MI 48824 USA
| | - Aritra Sarkar
- Michigan State University, Department of Chemistry East Lansing MI 48824 USA
| | | | - Richard J Staples
- Michigan State University, Department of Chemistry East Lansing MI 48824 USA
| | - Babak Borhan
- Michigan State University, Department of Chemistry East Lansing MI 48824 USA
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6
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Li W, Zhou P, Li G, Lin L, Feng X. Catalytic Asymmetric Halohydroxylation of α,β‐Unsaturated Ketones with Water as the Nucleophile. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000080] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Weiwei Li
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Pengfei Zhou
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Gonglin Li
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Lili Lin
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 People's Republic of China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & TechnologyMinistry of EducationCollege of ChemistrySichuan University Chengdu 610064 People's Republic of China
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7
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Ushakova IV, Shainyan BA. Chlorotriflamidation of vinylsilanes with N,N-dichlorotriflamide. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.01.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Enantioselective intermolecular iodoacetalization of enol ethers catalyzed by chiral Co(III)-complex-templated Brønsted acids. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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9
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Cao YM, Lentz D, Christmann M. Synthesis of Enantioenriched Bromohydrins via Divergent Reactions of Racemic Intermediates from Anchimeric Oxygen Borrowing. J Am Chem Soc 2018; 140:10677-10681. [PMID: 30099869 DOI: 10.1021/jacs.8b06432] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a chiral phosphoric acid catalyzed bromocyclization/regiodivergent reaction of racemic intermediates sequence, which is enabled by anchimeric oxygen borrowing. Different types of alkenes are applicable, and both enantiomers of the bromohydrin products were obtained in generally excellent yields and enantioselectivities. In addition, an example of enantioconvergent synthesis from the two isomeric products is presented.
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Affiliation(s)
- Yi-Ming Cao
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Dieter Lentz
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustraße 3 , 14195 Berlin , Germany
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10
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Li X, He P, Zhou HB, Dong C. One-step pathway to selenoisobenzofuran-1(3H)-imine derivatives through highly selective selenocyclization of olefinic amides with benzeneselenyl chloride. Org Biomol Chem 2018. [PMID: 29517094 DOI: 10.1039/c8ob00179k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 1,4-diazabicyclo[2.2.2]octane (DABCO) catalyzed selenocyclization of olefinic amides was achieved under mild reaction conditions. The reaction formed various benzeneselenyl substituted isobenzofuran-1(3H)-imine derivatives in good yields. The product was determined using single-crystal X-ray analysis. For compound 2u, the relative stereochemistry was established on the basis of NOESY NMR studies.
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Affiliation(s)
- Xiwang Li
- State Key Laboratory of Virology, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China.
| | - Pei He
- State Key Laboratory of Virology, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China.
| | - Hai-Bing Zhou
- State Key Laboratory of Virology, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China.
| | - Chune Dong
- State Key Laboratory of Virology, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China. and Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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11
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Tan X, Pan H, Tian H, Shi Y. Phosphine oxide-Sc(OTf)3 catalyzed enantioselective bromoaminocyclization of tri-substituted allyl N-tosylcarbamates. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9192-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Yang H, Fan GT, Zhou L, Chen J. Enantioselective Chloro-O-cyclization of UnsaturatedN-Tosylcarbamates. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601328] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hui Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science; Northwest University; Xi'an 710127 People's Republic of China
| | - Guo-Tao Fan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science; Northwest University; Xi'an 710127 People's Republic of China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science; Northwest University; Xi'an 710127 People's Republic of China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science; Northwest University; Xi'an 710127 People's Republic of China
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13
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Li J, Li Z, Zhang X, Xu B, Shi Y. Catalytic enantioselective bromohydroxylation of aryl olefins with flexible functionalities. Org Chem Front 2017. [DOI: 10.1039/c6qo00636a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective bromohydroxylation of aryl olefins with flexible functionalities has been achieved with (DHQD)2PHAL as a catalyst and H2O as a nucleophile, giving a variety of optically active bromohydrins with up to 98% ee.
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Affiliation(s)
- Jing Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zequan Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xun Zhang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Bing Xu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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14
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Wang Z, Lin L, Zhou P, Liu X, Feng X. Chiral N,N′-dioxide-Sc(NTf2)3 complex-catalyzed asymmetric bromoamination of chalones with N-bromosuccinimide as both bromine and amide source. Chem Commun (Camb) 2017; 53:3462-3465. [DOI: 10.1039/c7cc00470b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A chiral N,N′-dioxide-Sc(NTf2)3 complex catalytic system has been developed to catalyze the asymmetric bromoamination reaction of chalones with N-bromosuccinimide.
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Affiliation(s)
- Zhengmeng Wang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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15
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Zhou P, Cai Y, Zhong X, Luo W, Kang T, Li J, Liu X, Lin L, Feng X. Catalytic Asymmetric Intra- and Intermolecular Haloetherification of Enones: An Efficient Approach to (−)-Centrolobine. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02048] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Yunfei Cai
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xia Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Weiwei Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Tengfei Kang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Jun Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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16
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Pan H, Huang H, Liu W, Tian H, Shi Y. Phosphine Oxide-Sc(OTf)3 Catalyzed Highly Regio- and Enantioselective Bromoaminocyclization of (E)-Cinnamyl Tosylcarbamates. An Approach to a Class of Synthetically Versatile Functionalized Molecules. Org Lett 2016; 18:896-9. [PMID: 26894481 DOI: 10.1021/acs.orglett.5b03459] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A highly regio- and enantioselective bromoaminocyclization of (E)-cinnamyl tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex is described. A wide variety of optically active aryl 5-bromo-1,3-oxazinan-2-ones can be obtained with high yield and enantioselectivity.
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Affiliation(s)
- Hongjie Pan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Hu Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Weigang Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Hua Tian
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.,Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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17
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Kawato Y, Ono H, Kubota A, Nagao Y, Morita N, Egami H, Hamashima Y. Highly Enantioselective Bromocyclization of Allylic Amides with a P/P=O Double-Site Lewis Base Catalyst. Chemistry 2016; 22:2127-2133. [DOI: 10.1002/chem.201503153] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Indexed: 01/10/2023]
Affiliation(s)
- Yuji Kawato
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Hiromi Ono
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Akino Kubota
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Yoshihiro Nagao
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Naoki Morita
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Hiromichi Egami
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences; University of Shizuoka; 52-1 Yada, Suruga-ku Shizuoka 422-8526 Japan
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18
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Li Z, Shi Y. Chiral Phosphine Oxide-Sc(OTf)3 Complex Catalyzed Enantioselective Bromoaminocyclization of 2-Benzofuranylmethyl N-Tosylcarbamates. Approach to a Novel Class of Optically Active Spiro Compounds. Org Lett 2015; 17:5752-5. [PMID: 26571147 DOI: 10.1021/acs.orglett.5b02817] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient enantioselective bromoaminocyclization of 2-benzofuranylmethyl N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)(3) complex is described. A wide variety of optically active spiro benzofuran oxazolidinones can be obtained with high enantioselectivities.
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Affiliation(s)
- Zequan Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.,State Key Laboratory of Coordination Chemistry, Center for Multimolecular Organic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.,Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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19
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Soltanzadeh B, Jaganathan A, Staples RJ, Borhan B. Highly Stereoselective Intermolecular Haloetherification and Haloesterification of Allyl Amides. Angew Chem Int Ed Engl 2015; 54:9517-22. [PMID: 26110812 PMCID: PMC4874786 DOI: 10.1002/anie.201502341] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Indexed: 12/16/2022]
Abstract
An organocatalytic and highly regio-, diastereo-, and enantioselective intermolecular haloetherification and haloesterification reaction of allyl amides is reported. A variety of alkene substituents and substitution patterns are compatible with this chemistry. Notably, electronically unbiased alkene substrates exhibit exquisite regio- and diastereoselectivity for the title transformation. We also demonstrate that the same catalytic system can be used in both chlorination and bromination reactions of allyl amides with a variety of nucleophiles with little or no modification.
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Affiliation(s)
- Bardia Soltanzadeh
- Department of Chemistry, Michigan State University, E. Lansing, MI 48824 (USA)
| | - Arvind Jaganathan
- Engineering and Process Sciences, Core R&D, The Dow Chemical Company, Midland, MI 48674 (USA)
| | - Richard J Staples
- Department of Chemistry, Michigan State University, E. Lansing, MI 48824 (USA)
| | - Babak Borhan
- Department of Chemistry, Michigan State University, E. Lansing, MI 48824 (USA).
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20
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Liu W, Pan H, Tian H, Shi Y. Enantioselective 6-exo-Bromoaminocyclization of Homoallylic N-Tosylcarbamates Catalyzed by a Novel Monophosphine-Sc(OTf)3 Complex. Org Lett 2015; 17:3956-9. [PMID: 26186576 DOI: 10.1021/acs.orglett.5b01779] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly enantioselective 6-exo-bromoaminocyclization of (E)-homoallylic N-tosylcarbamates catalyzed by a novel monophosphine-Sc(OTf)3 complex is described, giving a wide variety of optically active oxazinanones with high enantioselectivities.
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Affiliation(s)
- Weigang Liu
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hongjie Pan
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hua Tian
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yian Shi
- †Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,‡State Key Laboratory of Coordination Chemistry, Center for Multimolecular Organic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.,§Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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Zhang X, Li J, Tian H, Shi Y. Catalytic Asymmetric Bromination of Unfunctionalized Olefins with H2O as a Nucleophile. Chemistry 2015; 21:11658-63. [DOI: 10.1002/chem.201502133] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Indexed: 01/17/2023]
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22
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Soltanzadeh B, Jaganathan A, Staples RJ, Borhan B. Highly Stereoselective Intermolecular Haloetherification and Haloesterification of Allyl Amides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502341] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Huang H, Pan H, Cai Y, Liu M, Tian H, Shi Y. Enantioselective 6-endo bromoaminocyclization of 2,4-dienyl N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex. A dramatic additive effect. Org Biomol Chem 2015; 13:3566-70. [PMID: 25686253 DOI: 10.1039/c5ob00001g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An effective enantioselective 6-endo bromoaminocyclization of 2,4-dienyl N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex is described. A wide variety of optically active 5-bromo-1,3-oxazinan-2-ones containing various functional groups can be obtained in 61-91% yields and 92-99% ees. An additive, such as NaCl, has been found to be crucial for the reaction process.
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Affiliation(s)
- Hu Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 10090, China
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