151
|
Wheeler P, Phillips JH, Pederson RL. Scalable Methods for the Removal of Ruthenium Impurities from Metathesis Reaction Mixtures. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00138] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Philip Wheeler
- Materia, Inc., 60 N San Gabriel Blvd., Pasadena, California 91107, United States
| | - John H. Phillips
- Materia, Inc., 60 N San Gabriel Blvd., Pasadena, California 91107, United States
| | - Richard L. Pederson
- Materia, Inc., 60 N San Gabriel Blvd., Pasadena, California 91107, United States
| |
Collapse
|
152
|
Bulman Page PC, Bartlett CJ, Chan Y, Allin SM, McKenzie MJ, Lacour J, Jones GA. New biphenyl iminium salt catalysts for highly enantioselective asymmetric epoxidation: role of additional substitution and dihedral angle. Org Biomol Chem 2016; 14:4220-32. [PMID: 27006303 DOI: 10.1039/c6ob00542j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New biaryl iminium salt catalysts for enantioselective alkene epoxidation containing additional substitution in the heterocyclic ring are reported. The effects upon conformation and enantioselectivity of this additional substitution, and the influence of dihedral angle in these systems, has been investigated using a synthetic approach supported by density functional theory. Enantioselectivities of up to 97% ee were observed.
Collapse
Affiliation(s)
- Philip C Bulman Page
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Christopher J Bartlett
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Yohan Chan
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| | - Steven M Allin
- Department of Chemistry, Nottingham Trent University, Clifton, Nottinghamshire NG11 8NS, UK
| | - Michael J McKenzie
- Charnwood Molecular Ltd, 7 Beaumont Court, Prince William Road, Loughborough, Leicestershire LE11 5GA, UK
| | - Jérôme Lacour
- Département de Chimie Organique, Université de Genève, Quai Ernest Ansermet 30, CH-1121 Genève 4, Switzerland
| | - Garth A Jones
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK.
| |
Collapse
|
153
|
Wang C, Luo L, Yamamoto H. Metal-Catalyzed Directed Regio- and Enantioselective Ring-Opening of Epoxides. Acc Chem Res 2016; 49:193-204. [PMID: 26789498 DOI: 10.1021/acs.accounts.5b00428] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Control of regio- and stereoselectivity of chemical reactions is the central theme in synthetic chemistry. Regioselective and enantiospecific ring opening of readily available enantioenriched epoxides precursors provides a straightforward access to diverse highly functionalized molecules which can serve as chiral building blocks for synthesis of biologically active compounds. However, prior to our research work, the scope of catalytic highly regioselective ring opening of epoxides is limited to structurally or electronically biased epoxides, such as terminal and aromatic epoxides. Regioselective ring-opening of epoxides with substituents on both sides demonstrating similar steric and electronic effects is still a formidable challenge for organic chemists. To address this challenge, our approach is to use the readily available functional moiety incorporated in an epoxide as a directing group to realize the regioselective nucleophilic attack on the oxirane ring. Alternatively, asymmetric ring-opening of epoxides can also provide the ring-opening products in highly enantioenriched form. However, excellent results are usually obtained in the case of the kinetic resolution of terminal epoxides or the desymmetrization of meso-epoxides. In these cases, the issue of regiocontrol of the ring-opening is circumvented or minimized. Based on our successful results of regioselective ring-opening of functionalized epoxides by implementing the directed ring-opening strategy, we also investigated the enantioselective ring-opening of internal epoxides bearing a functional moiety as directing group. This Account summarizes our research on metal-catalyzed directed ring-opening reactions of epoxides, which encompasses the following breakthroughs: (1) highly regioselective ring-opening of various substrates including epoxy allylic alcohols, epoxy homoallylic alcohols and epoxy allylic sulfonamides with a variety of N-, O-, and halide-nucleophiles catalyzed by W-, Mo-, or Ni-salt; (2) first kinetic resolutions of epoxy allylic alcohols, epoxy homoallylic alcohols, and epoxy allylic sulfonamides with various amines as nucleophiles, which were catalyzed by W-bishydroxamic acid (W-BHA), nickel-BINAM, and Gd-N,N'-dioxide catalytic system, respectively; (3) successful implementation of the strategy of combined asymmetric syntheses by the combination of the enantioselective epoxidation and the enantioselective ring-opening of 2,3-epoxy alcohols establishing a new entry to prepare amino alcohols in regio-, diastereo-, and enantiomerically pure form.
Collapse
Affiliation(s)
- Chuan Wang
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Lan Luo
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South
Ellis Avenue, Chicago, Illinois 60637, United States
| |
Collapse
|
154
|
Wang HY, Huang K, De Jesús M, Espinosa S, Piñero-Santiago LE, Barnes CL, Ortiz-Marciales M. Synthesis of enantiopure 1,2-azido and 1,2-amino alcohols via regio- and stereoselective ring-opening of enantiopure epoxides by sodium azide in hot water. TETRAHEDRON, ASYMMETRY 2016; 27:91-100. [PMID: 26843787 PMCID: PMC4733893 DOI: 10.1016/j.tetasy.2015.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A practical and convenient method for the efficient and regio- and stereoselective ring-opening of enantiopure monosubstituted epoxides by sodium azide under hydrolytic conditions is reported. The ring-opening of enantiopure styryl and pyridyl (S)-epoxides by N3- in hot water takes place preferentially at the internal position with complete inversion of configuration to produce (R)-2-azido ethanols with up to 99% enantio- and regioselectivity, while the (S)-adamantyl oxirane provides mainly the (S)-1-adamantyl-2-azido ethanol in excellent yield. In general, 1,2-amino ethanols were obtained in high yield and excellent enantiopurity by the reduction of the chiral 1,2-azido ethanols with PPh3 in water/THF, and then converted into the Boc or acetamide derivatives.
Collapse
Affiliation(s)
- Hai-Yang Wang
- Department of Chemistry, University of Puerto Rico-Humacao, CALL BOX 860, Humacao, PR 00792, USA
| | - Kun Huang
- Department of Chemistry, University of Puerto Rico-Humacao, CALL BOX 860, Humacao, PR 00792, USA
| | - Melvin De Jesús
- Department of Chemistry, University of Puerto Rico-Humacao, CALL BOX 860, Humacao, PR 00792, USA
| | - Sandraliz Espinosa
- Department of Chemistry, University of Puerto Rico-Humacao, CALL BOX 860, Humacao, PR 00792, USA
| | - Luis E. Piñero-Santiago
- Department of Chemistry, University of Puerto Rico-Humacao, CALL BOX 860, Humacao, PR 00792, USA
| | - Charles L. Barnes
- Department of Chemistry, University of Missouri, Columbia, MO 65211, USA
| | | |
Collapse
|
155
|
He W, Fang Z, Tian Q, Shen W, Guo K. Tandem, Effective Continuous Flow Process for the Epoxidation of Cyclohexene. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04187] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei He
- College
of Biotechnology and Pharmaceutical Engineering, Nanjing Technology University, No. 30 Puzhu South Road, Nanjing, China
| | - Zheng Fang
- School
of Pharmaceutical Science, Nanjing Technology University, No. 30 Puzhu
South Road, Nanjing, China
| | - Qitao Tian
- College
of Biotechnology and Pharmaceutical Engineering, Nanjing Technology University, No. 30 Puzhu South Road, Nanjing, China
| | - Weidong Shen
- School
of Pharmaceutical Science, Nanjing Technology University, No. 30 Puzhu
South Road, Nanjing, China
| | - Kai Guo
- College
of Biotechnology and Pharmaceutical Engineering, Nanjing Technology University, No. 30 Puzhu South Road, Nanjing, China
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Technology University, Nanjing 211816, P.R. China
| |
Collapse
|
156
|
Moradi-Shoeili Z, Zare M, Bagherzadeh M, Özkar S, Akbayrak S. Synthesis, characterization, and catalytic activity of supported molybdenum Schiff base complex as a magnetically recoverable nanocatalyst in epoxidation reaction. J COORD CHEM 2016. [DOI: 10.1080/00958972.2015.1137290] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Maryam Zare
- Materials Science & Engineering Department, Golpayegan University of Technology, Golpayegan, Iran
| | | | - Saim Özkar
- Chemistry Department, Middle East Technical University, Ankara, Turkey
| | - Serdar Akbayrak
- Chemistry Department, Middle East Technical University, Ankara, Turkey
| |
Collapse
|
157
|
Shen D, Qiu B, Xu D, Miao C, Xia C, Sun W. Enantioselective Epoxidation of Olefins with H2O2 Catalyzed by Bioinspired Aminopyridine Manganese Complexes. Org Lett 2016; 18:372-5. [DOI: 10.1021/acs.orglett.5b03309] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Duyi Shen
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bin Qiu
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Daqian Xu
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Chengxia Miao
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Chungu Xia
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Wei Sun
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| |
Collapse
|
158
|
Miao C, Wang B, Wang Y, Xia C, Lee YM, Nam W, Sun W. Proton-Promoted and Anion-Enhanced Epoxidation of Olefins by Hydrogen Peroxide in the Presence of Nonheme Manganese Catalysts. J Am Chem Soc 2016; 138:936-43. [DOI: 10.1021/jacs.5b11579] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chengxia Miao
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Bin Wang
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Yong Wang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Chungu Xia
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yong-Min Lee
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Wonwoo Nam
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Wei Sun
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou
Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| |
Collapse
|
159
|
Krishnan KK, Thomas AM, Sindhu KS, Anilkumar G. Recent advances and perspectives in the manganese-catalysed epoxidation reactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
160
|
Roy T, Thangaraj M, Gonnade RG, Biju AT. Synthesis of functionalized amino epoxides by a three-component coupling involving aziridines, arynes and aldehydes. Chem Commun (Camb) 2016; 52:9044-7. [DOI: 10.1039/c6cc00057f] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A three-component coupling of arynes, aziridines and aldehydes/isatins resulting in the synthesis of N-aryl α-amino epoxides has been demonstrated.
Collapse
Affiliation(s)
- Tony Roy
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| | - Manikandan Thangaraj
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| | - Rajesh G. Gonnade
- Centre for Materials Characterization
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| | - Akkattu T. Biju
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
| |
Collapse
|
161
|
Ji N, Yuan J, Liu M, Lan T, He W. Novel chiral Schiff base/Ti(iv) catalysts for the catalytic asymmetric epoxidation of N-alkenyl sulfonamides. Chem Commun (Camb) 2016; 52:7731-4. [DOI: 10.1039/c6cc02852g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel highly enantioselective Schiff base/Ti(iv) catalyst for the catalytic asymmetric epoxidation of a series of N-alkenyl sulfonamides under mild conditions was described.
Collapse
Affiliation(s)
- Nan Ji
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Jiani Yuan
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Miaoxi Liu
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Ting Lan
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| | - Wei He
- Department of Chemistry
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- P. R. China
| |
Collapse
|
162
|
Abe H, Itaya S, Sasaki K, Kobayashi T, Ito H. Enantioselective Total Synthesis of the Proposed Structure of Furan-Containing Polyketide. Chem Pharm Bull (Tokyo) 2016; 64:772-7. [DOI: 10.1248/cpb.c16-00147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hideki Abe
- Tokyo University of Pharmacy and Life Sciences
| | | | - Kei Sasaki
- Tokyo University of Pharmacy and Life Sciences
| | | | | |
Collapse
|
163
|
Bhadra S, Akakura M, Yamamoto H. Design of a New Bimetallic Catalyst for Asymmetric Epoxidation and Sulfoxidation. J Am Chem Soc 2015; 137:15612-5. [DOI: 10.1021/jacs.5b11429] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sukalyan Bhadra
- Molecular
Catalyst Research Center, Chubu University, 1200, Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Matsujiro Akakura
- Department
of Chemistry, Aichi University of Education, Igaya-cho, Kariya, Aichi 448-8542, Japan
| | - Hisashi Yamamoto
- Molecular
Catalyst Research Center, Chubu University, 1200, Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| |
Collapse
|
164
|
Smith GMT, Burton PM, Bray CD. Sultones and Sultines via a Julia-Kocienski Reaction of Epoxides. Angew Chem Int Ed Engl 2015; 54:15236-40. [PMID: 26503062 PMCID: PMC4691334 DOI: 10.1002/anie.201508467] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Indexed: 12/17/2022]
Abstract
The development of the homologous Julia–Kocienski reaction has led to the discovery of two new reaction modes of epoxides with sulfones. These pathways allow rapid and direct access to a range of γ-sultones and γ-sultines.
Collapse
Affiliation(s)
- Geoffrey M T Smith
- Department of Chemistry, Queen Mary University of London, Mile End Road, London, E1 4NS (UK)
| | - Paul M Burton
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY (UK)
| | - Christopher D Bray
- Department of Chemistry, Queen Mary University of London, Mile End Road, London, E1 4NS (UK).
| |
Collapse
|
165
|
Keßberg A, Metz P. Nutzung eines o
-Chinonmethids in der asymmetrischen Transferhydrierung: enantioselektive Synthese von Brosimin A, Brosimin B und Brosimacutin L. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anton Keßberg
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstraße 66 01069 Dresden Deutschland
| | - Peter Metz
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstraße 66 01069 Dresden Deutschland
| |
Collapse
|
166
|
Keßberg A, Metz P. Utilizing an o
-Quinone Methide in Asymmetric Transfer Hydrogenation: Enantioselective Synthesis of Brosimine A, Brosimine B, and Brosimacutin L. Angew Chem Int Ed Engl 2015; 55:1160-3. [DOI: 10.1002/anie.201507269] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/28/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Anton Keßberg
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstrasse 66 01069 Dresden Germany
| | - Peter Metz
- Fachrichtung Chemie und Lebensmittelchemie, Organische Chemie I; Technische Universität Dresden; Bergstrasse 66 01069 Dresden Germany
| |
Collapse
|
167
|
Ashokkumar V, Balasaravanan R, Sadhasivam V, Jenofar SM, Siva A. A new class of bifunctional chiral phase transfer catalysts for highly enantioselective asymmetric epoxidation of α,β-unsaturated ketones at ambient temperature. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
168
|
Smith GMT, Burton PM, Bray CD. Sultones and Sultines via a Julia-Kocienski Reaction of Epoxides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508467] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
169
|
Tan J, Yasuda N. Contemporary Asymmetric Phase Transfer Catalysis: Large-Scale Industrial Applications. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00304] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jiajing Tan
- Department
of Process Chemistry, Merck and Co., Inc.,
P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Nobuyoshi Yasuda
- Department
of Process Chemistry, Merck and Co., Inc.,
P.O. Box 2000, Rahway, New Jersey 07065, United States
| |
Collapse
|
170
|
Luo L, Yamamoto H. Synthesis of virtually enantiopure aminodiols with three adjacent stereogenic centers by epoxidation and ring-opening. Org Biomol Chem 2015; 13:10466-70. [PMID: 26440919 DOI: 10.1039/c5ob01808k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A virtually complete enantioselective synthesis of 3-amino-1,2-diols with three consecutive stereocenters was accomplished by a sequential cascade of two kinetic resolutions, which features a Sharpless or Hafnium-catalyzed asymmetric epoxidation and a subsequent W-catalyzed aminolysis. Enantiopure products with up to >99.9% ee and >99.9 : 0.1 dr were obtained and could serve as potential building blocks for pharmaceutical or biological significant molecules.
Collapse
Affiliation(s)
- Lan Luo
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, USA
| | | |
Collapse
|
171
|
Bradley TD, Dragan A, Tomkinson NC. Baeyer–Villiger oxidation under Payne epoxidation conditions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.08.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
172
|
Bulman Page PC, Pearce CA, Chan Y, Parker P, Buckley BR, Rassias GA, Elsegood MRJ. Atropo- and Diastereoselective Construction of Tetracyclic Biphenylazepinium Salts Derived from Aminoalcohols: Use as Catalysts in Enantioselective Asymmetric Epoxidation. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip C. Bulman Page
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Christopher A. Pearce
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Yohan Chan
- School
of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, U.K
| | - Phillip Parker
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | - Benjamin R. Buckley
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| | | | - Mark R. J. Elsegood
- Chemistry
Department, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K
| |
Collapse
|
173
|
Wang C, Yamamoto H. Asymmetric Epoxidation Using Hydrogen Peroxide as Oxidant. Chem Asian J 2015; 10:2056-68. [PMID: 26061144 DOI: 10.1002/asia.201500293] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 11/07/2022]
Abstract
Asymmetric epoxidation is one of the most important transformations in organic synthesis. Although tremendous progress was achieved in this field in the 1980s and 1990s, it is still desirable from both economical and ecological views to develop environmentally friendly catalytic epoxidation with a broad substrate scope. Hydrogen peroxide is a safe and cheap oxidant, which is easy to handle and generates water as the sole byproduct. Therefore, asymmetric epoxidation of olefins using hydrogen peroxide as oxidant has been a very active research field and has been investigated by many research groups in recent years. In this review, the exciting very recent developments of this rapidly growing area are surveyed and organized according to the catalyst systems.
Collapse
Affiliation(s)
- Chuan Wang
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60637, USA
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60637, USA. , .,Molecular Catalyst Research Center, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan. ,
| |
Collapse
|
174
|
Nakagiri T, Murai M, Takai K. Stereospecific Deoxygenation of Aliphatic Epoxides to Alkenes under Rhenium Catalysis. Org Lett 2015; 17:3346-9. [DOI: 10.1021/acs.orglett.5b01583] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Nakagiri
- Division
of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Masahito Murai
- Division
of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division
of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Research
Center of New Functional Materials for Energy Production, Storage
and Transport, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| |
Collapse
|
175
|
Boudreault PL, Mattler JK, Wender PA. Studies on the regio- and diastereo-selective epoxidation of daphnanes and tiglianes. Tetrahedron Lett 2015; 56:3423-3427. [PMID: 26034334 PMCID: PMC4449265 DOI: 10.1016/j.tetlet.2015.01.126] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Daphnanes and tiglianes are diterpenes with a shared tricyclic 5-7-6 ring system. Many members exhibit significant biological activities often associated with protein kinase C signaling. Many of these natural products (~100) have a C6-C7 α-epoxide whose influence on biological activity is little studied. Using the more readily available phorbol ester PDBu as a test substrate, we report an efficient, and potentially general, α-epoxidation method based on a vanadium-catalyzed asymmetric epoxidation with bishydroxamic acid (BHA) ligands.
Collapse
Affiliation(s)
- Pierre-Luc Boudreault
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305-5080, USA
| | - Jennifer K. Mattler
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305-5080, USA
| | - Paul A. Wender
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305-5080, USA
| |
Collapse
|
176
|
Aminomethylhydroxylation of alkenes: Exploitation in the synthesis of scaffolds for small molecule libraries. Bioorg Med Chem 2015; 23:2736-40. [DOI: 10.1016/j.bmc.2015.01.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/30/2015] [Indexed: 11/18/2022]
|
177
|
Selectively catalytic epoxidation of α-pinene with dry air over the composite catalysts of Co–MOR(L) with Schiff-base ligands. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.02.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
178
|
Dönges M, Amberg M, Niebergall M, Hartung J. Activating tert-butyl hydroperoxide by chelated vanadates for stereoselectively preparing sidechain-functionalized tetrahydrofurans. J Inorg Biochem 2015; 147:204-20. [PMID: 25958253 DOI: 10.1016/j.jinorgbio.2015.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 04/13/2015] [Accepted: 04/14/2015] [Indexed: 11/25/2022]
Abstract
tert-Butyl hydroperoxide (TBHP) stereoselectively oxidizes substituted 4-pentenols, when activated by (ethyl)[cis-(piperidine-2,6-diyl)dimethyl] vanadates. The reaction affords (tetrahydrofuran-2-yl)methanols in up to 89% yield, and in stereoselectivity ranging between moderate (cis:trans=32:68) to excellent (>99:1). Correlating structures of 4-pentenols, differing by substitution at tetragonal and trigonal stereocenters, to configuration of products obtained from oxidative cyclization provides a reaction model explaining the origin of stereoselectivity by (i) intramolecular oxygen atom transfer to (ii) a chair-like folded alkenol, being (iii) hydrogen-bonded to one of the two aminodiolate oxygens of the chelated vanadate, having (iv) substituents in the chair-like transition structure preferentially aligned equatorially. Substituents at trigonal stereocenters improve 2,5-cis- and 2,4-trans-selectivity for oxidative 4-pentenol cyclization in case of (Z)-configuration. An (E)-substituent does not alter selectivity exerted by a terminal (Z)-substituent of similar steric size. Larger (E)-groups increase the fraction of 2,5-trans-cyclized products. The reaction model additionally implements results from vanadium-51 NMR spectroscopy and density functional theory. According to theory, the (dialkoxy)(oxo)vanadium substituent exerts in the preferred end-on conformation almost no effect on structure and bonding of the peroxide group in tert-butylperoxy vanadates. Changing conformation to a higher in energy side-on arrangement puts the vanadate-bound tert-butylperoxy group into a position to serve in a concerted reaction as combined electron acceptor and oxygen atom donor.
Collapse
Affiliation(s)
- Maike Dönges
- Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
| | - Matthias Amberg
- Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
| | - Mark Niebergall
- Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
| | - Jens Hartung
- Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany.
| |
Collapse
|
179
|
Zeng C, Yuan D, Zhao B, Yao Y. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Rare-Earth Amides [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 with Phenoxy-Functionalized Chiral Prolinols. Org Lett 2015; 17:2242-5. [DOI: 10.1021/acs.orglett.5b00833] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chao Zeng
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Dan Yuan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bei Zhao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yingming Yao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake
Campus, Soochow University, Suzhou 215123, People’s Republic of China
| |
Collapse
|
180
|
|
181
|
Larionov VA, Markelova EP, Smol'yakov AF, Savel'yeva TF, Maleev VI, Belokon YN. Chiral octahedral complexes of Co(iii) as catalysts for asymmetric epoxidation of chalcones under phase transfer conditions. RSC Adv 2015. [DOI: 10.1039/c5ra11760g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stereochemically inert and positively charged chiral complexes of Co(iii) were shown to catalyze the asymmetric epoxidation of chalcones with H2O2 under phase transfer conditions.
Collapse
Affiliation(s)
| | - Elina P. Markelova
- D.Mendeleev University of Chemistry Technology of Russia
- 125047 Moscow
- Russia
| | | | | | - Victor I. Maleev
- Nesmeyanov Institute of Organoelement Compounds
- 119991 Moscow
- Russia
| | - Yuri N. Belokon
- Nesmeyanov Institute of Organoelement Compounds
- 119991 Moscow
- Russia
| |
Collapse
|
182
|
Zhang H, Sun YM, Zhao Y, Zhou ZY, Wang JP, Xin N, Nie SZ, Zhao CQ, Han LB. One-Pot Process That Efficiently Generates Single Stereoisomers of 1,3-Bisphosphinylpropanes Having Five Chiral Centers. Org Lett 2014; 17:142-5. [DOI: 10.1021/ol503371r] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- He Zhang
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yong-Ming Sun
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yalei Zhao
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Zhong-Yang Zhou
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ji-Ping Wang
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Nana Xin
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Shao-Zhen Nie
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Chang-Qiu Zhao
- College
of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Li-Biao Han
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| |
Collapse
|
183
|
Pierce CJ, Hilinski MK. Chemoselective Hydroxylation of Aliphatic sp3 C–H Bonds Using a Ketone Catalyst and Aqueous H2O2. Org Lett 2014; 16:6504-7. [DOI: 10.1021/ol503410e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Conor J. Pierce
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Michael K. Hilinski
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| |
Collapse
|
184
|
Wang C, Yamamoto H. Tungsten-, Molybdenum-, and Cerium-Promoted Regioselective and Stereospecific Halogenation of 2,3-Epoxy Alcohols and 2,3-Epoxy Sulfonamides. Org Lett 2014; 16:5937-9. [DOI: 10.1021/ol503091n] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Chuan Wang
- Department
of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Hisashi Yamamoto
- Department
of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
- Molecular
Catalyst Research Center, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
| |
Collapse
|
185
|
Suzuki G, Minami A, Shimaya M, Kodama T, Morimoto Y, Oguri H, Oikawa H. Analysis of Enantiofacial Selective Epoxidation Catalyzed by Flavin-containing Monooxygenase Lsd18 Involved in Ionophore Polyether Lasalocid Biosynthesis. CHEM LETT 2014. [DOI: 10.1246/cl.140721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Gaku Suzuki
- Division of Chemistry, Graduate School of Science, Hokkaido University
| | - Atsushi Minami
- Division of Chemistry, Graduate School of Science, Hokkaido University
| | - Mayu Shimaya
- Division of Chemistry, Graduate School of Science, Hokkaido University
| | - Takeshi Kodama
- Department of Chemistry, Graduate School of Science, Osaka City University
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of Science, Osaka City University
| | - Hiroki Oguri
- Division of Chemistry, Graduate School of Science, Hokkaido University
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University
| |
Collapse
|
186
|
Abascal NC, Lichtor PA, Giuliano MW, Miller SJ. Function-Oriented Investigations of a Peptide-Based Catalyst that Mediates Enantioselective Allylic Alcohol Epoxidation. Chem Sci 2014; 5:4504-4511. [PMID: 25386335 PMCID: PMC4224318 DOI: 10.1039/c4sc01440e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
We detail an investigation of a peptide-based catalyst 6 that is effective for the site- (>100:1:1) and enantioselective epoxidation (86% ee) of farnesol. Studies of the substrate scope exhibited by the catalyst are included, along with an exploration of optimized reaction conditions. Mechanistic studies are reported, including relative rate determinations for the catalyst and propionic acid, a historical perspective, truncation studies, and modeling using NMR data. Our compiled data advances our understanding of the inner workings of a catalyst that was identified through combinatorial means.
Collapse
Affiliation(s)
- Nadia C. Abascal
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Phillip A. Lichtor
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Michael W. Giuliano
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| |
Collapse
|
187
|
Mulzer M, Coates GW. Carbonylation of cis-Disubstituted Epoxides to trans-β-Lactones: Catalysts Displaying Steric and Contrasteric Regioselectivity. J Org Chem 2014; 79:11851-62. [DOI: 10.1021/jo501899e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Michael Mulzer
- Department of Chemistry and
Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W. Coates
- Department of Chemistry and
Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| |
Collapse
|
188
|
Shen D, Miao C, Wang S, Xia C, Sun W. A Mononuclear Manganese Complex of a Tetradentate Nitrogen Ligand - Synthesis, Characterizations, and Application in the Asymmetric Epoxidation of Olefins. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402663] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
189
|
Phosphonium salt induced stereoselective allylic rearrangement during chlorination of α-hydroxyallylphosphinates. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
190
|
Bulman Page PC, Chan Y, Liddle J, Elsegood MR. Carbohydrate-derived iminium salt organocatalysts for the asymmetric epoxidation of alkenes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
191
|
|
192
|
Qian Q, Tan Y, Zhao B, Feng T, Shen Q, Yao Y. Asymmetric Epoxidation of Unsaturated Ketones Catalyzed by Heterobimetallic Rare Earth–Lithium Complexes Bearing Phenoxy-Functionalized Chiral Diphenylprolinolate Ligand. Org Lett 2014; 16:4516-9. [DOI: 10.1021/ol5020398] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qinqin Qian
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| | - Yufang Tan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| | - Bei Zhao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| | - Tao Feng
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| | - Qi Shen
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| | - Yingming Yao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, China
| |
Collapse
|
193
|
Kawai H, Shibata N. Asymmetric Synthesis of Agrochemically Attractive Trifluoromethylated Dihydroazoles and Related Compounds under Organocatalysis. CHEM REC 2014; 14:1024-40. [DOI: 10.1002/tcr.201402023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
| |
Collapse
|
194
|
Highly efficient, green and solvent-free photooxygenation of alkenes by air and visible light or sunlight in the presence of porphyrin sensitizers. REACTION KINETICS MECHANISMS AND CATALYSIS 2014. [DOI: 10.1007/s11144-014-0744-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
195
|
Dai W, Shang S, Chen B, Li G, Wang L, Ren L, Gao S. Asymmetric epoxidation of olefins with hydrogen peroxide by an in situ-formed manganese complex. J Org Chem 2014; 79:6688-94. [PMID: 24969226 DOI: 10.1021/jo501178k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Asymmetric epoxidation of a variety of cis, trans, terminal, and trisubstituted olefins in excellent yields (up to 94%) and enantioselectivities (>99% ee) by an in situ-formed manganese complex using H2O2 has been developed. A relationship between the hydrophobicity of the catalyst imposed by ligand and the catalytic activity has been observed. The influence of the amount and identity of the acid additive was examined, and improved enantioselectivities were achieved through the use of a catalytic amount of a carboxylic acid additive.
Collapse
Affiliation(s)
- Wen Dai
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
196
|
Mengozzi L, Gualandi A, Cozzi PG. A highly enantioselective acyl-Mannich reaction of isoquinolines with aldehydes promoted by proline derivatives: an approach to 13-alkyl-tetrahydroprotoberberine alkaloids. Chem Sci 2014. [DOI: 10.1039/c4sc01221f] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
197
|
Chu Y, Hao X, Lin L, Chen W, Li W, Tan F, Liu X, Feng X. ChiralN,N′-Dioxide-Scandium(III)-Catalyzed Asymmetric Epoxidation of 2-Arylidene-1,3-diketones with Hydrogen Peroxide. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400341] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
198
|
Davis RL, Stiller J, Naicker T, Jiang H, Jørgensen KA. Asymmetric organocatalytic epoxidations: reactions, scope, mechanisms, and applications. Angew Chem Int Ed Engl 2014; 53:7406-26. [PMID: 24919420 DOI: 10.1002/anie.201400241] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Indexed: 12/26/2022]
Abstract
Chiral epoxides serve as versatile building blocks in the synthesis of complex organic frameworks. The high strain imposed by the three-membered ring system makes epoxides prone to a variety of nucleophilic ring-opening reactions. Since the development of the Sharpless epoxidation, there have been many important contributions and advances in this area. With the rapid development of the field of asymmetric organocatalysis, a wide range of organocatalysts is now able to catalyze the epoxidation of broad class of unsaturated carbonyl compounds. In this Minireview, recent progress in the development of organocatalytic asymmetric epoxidation methods, the proposed mechanisms of these reactions and their applications as intermediates is reported.
Collapse
Affiliation(s)
- Rebecca L Davis
- Center for Catalysis, Department of Chemistry, Aarhus University, 8000 Aarhus C (Denmark); Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 (Canada)
| | | | | | | | | |
Collapse
|
199
|
Davis RL, Stiller J, Naicker T, Jiang H, Jørgensen KA. Organokatalytische asymmetrische Epoxidierungen - Reaktionen, Mechanismen und Anwendungen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400241] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
200
|
Dong HB, Yang MY, Liu B, Wang MA. Concise stereoselective total synthesis of (+)-muricatacin and (+)-epi-muricatacin. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2014; 16:847-853. [PMID: 24899519 DOI: 10.1080/10286020.2014.916695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Efficient stereoselective total synthesis of (+)-muricatacin (1) and (+)-epi-muricatacin (8) was accomplished from commercially available chemical pent-4-ynoic acid via Shi's asymmetric epoxidation and Mitsunobu reaction as the key steps in 17.8% and 26.9% overall yields, respectively.
Collapse
Affiliation(s)
- Hong-Bo Dong
- a Department of Applied Chemistry , College of Sciences, China Agricultural University , Beijing 100193 , China
| | | | | | | |
Collapse
|