1
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Zhu H, Manchado A, Omar Farah A, McKay AP, Cordes DB, Cheong PHY, Kasten K, Smith AD. Isothiourea-Catalysed Acylative Dynamic Kinetic Resolution of Tetra-substituted Morpholinone and Benzoxazinone Lactols. Angew Chem Int Ed Engl 2024; 63:e202402908. [PMID: 38713293 DOI: 10.1002/anie.202402908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/08/2024]
Abstract
The development of methods to allow the selective acylative dynamic kinetic resolution (DKR) of tetra-substituted lactols is a recognised synthetic challenge. In this manuscript, a highly enantioselective isothiourea-catalysed acylative DKR of tetra-substituted morpholinone and benzoxazinone-derived lactols is reported. The scope and limitations of this methodology have been developed, with high enantioselectivity and good to excellent yields (up to 89 %, 99 : 1 er) observed across a broad range of substrate derivatives incorporating substitution at N(4) and C(2), di- and spirocyclic substitution at C(5) and C(6), as well as benzannulation (>35 examples in total). The DKR process is amenable to scale-up on a 1 g laboratory scale. The factors leading to high selectivity in this DKR process have been probed through computation, with an N-C=O⋅⋅⋅isothiouronium interaction identified as key to producing ester products in highly enantioenriched form.
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Affiliation(s)
- Haoxiang Zhu
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Alejandro Manchado
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008, Salamanca, Spain
| | - Abdikani Omar Farah
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR 97331, USA
| | - Aidan P McKay
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - David B Cordes
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, OR 97331, USA
| | - Kevin Kasten
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
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2
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Agrawal SK, Majhi PK, Goodfellow AS, Tak RK, Cordes DB, McKay AP, Kasten K, Bühl M, Smith AD. Synthesis of Tetra-Substituted 3-Hydroxyphthalide Esters by Isothiourea-Catalysed Acylative Dynamic Kinetic Resolution. Angew Chem Int Ed Engl 2024; 63:e202402909. [PMID: 38713305 DOI: 10.1002/anie.202402909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/08/2024]
Abstract
A general and highly enantioselective method for the preparation of tetra-substituted 3-hydroxyphthalide esters via isothiourea-catalysed acylative dynamic kinetic resolution (DKR) is reported. Using (2S,3R)-HyperBTM (5 mol %) as the catalyst, the scope and limitations of this methodology have been extensively probed, with high enantioselectivity and good to excellent yields observed (>40 examples, up to 99 %, 99 : 1 er). Substitution of the aromatic core within the 3-hydroxyphthalide skeleton, as well as aliphatic and aromatic substitution at C(3), is readily tolerated. A diverse range of anhydrides, including those from bioactive and pharmaceutically relevant acids, can also be used. The high enantioselectivity observed in this DKR process has been probed computationally, with a key substrate heteroatom donor O⋅⋅⋅acyl-isothiouronium interaction identified through DFT analysis as necessary for enantiodiscrimination.
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Affiliation(s)
- Shubham K Agrawal
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Pankaj K Majhi
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Alister S Goodfellow
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Raj K Tak
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - David B Cordes
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Aidan P McKay
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Kevin Kasten
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Michael Bühl
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
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3
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Bitai J, Nimmo AJ, Slawin AMZ, Smith AD. Cooperative Palladium/Isothiourea Catalyzed Enantioselective Formal (3+2) Cycloaddition of Vinylcyclopropanes and α,β-Unsaturated Esters. Angew Chem Int Ed Engl 2022; 61:e202202621. [PMID: 35389553 PMCID: PMC9324207 DOI: 10.1002/anie.202202621] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/15/2022]
Abstract
A protocol for the enantioselective synthesis of substituted vinylcyclopentanes has been realised using cooperative palladium and isothiourea catalysis. Treatment of vinylcyclopropanes with Pd(PPh3 )4 generates a zwitterionic π-allyl palladium intermediate that intercepts a catalytically generated α,β-unsaturated acyl ammonium species prepared from the corresponding α,β-unsaturated para-nitrophenyl ester and the isothiourea (R)-BTM. Intermolecular formal (3+2) cycloaddition between these reactive intermediates generates functionalised cyclopentanes in generally good yields and excellent diastereo- and enantiocontrol (up to >95 : 5 dr, 97 : 3 er), with the use of LiCl as an additive proving essential for optimal stereocontrol. To the best of our knowledge a dual transition metal/organocatalytic process involving α,β-unsaturated acyl ammonium intermediates has not been demonstrated previously.
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Affiliation(s)
- Jacqueline Bitai
- EaStCHEM, School of ChemistryUniversity of St AndrewsSt Andrews, FifeKY16 9STUK
| | - Alastair J. Nimmo
- EaStCHEM, School of ChemistryUniversity of St AndrewsSt Andrews, FifeKY16 9STUK
| | | | - Andrew D. Smith
- EaStCHEM, School of ChemistryUniversity of St AndrewsSt Andrews, FifeKY16 9STUK
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4
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Bitai J, Nimmo AJ, Slawin AMZ, Smith AD. Cooperative Palladium/Isothiourea Catalyzed Enantioselective Formal (3+2) Cycloaddition of Vinylcyclopropanes and a,b‐Unsaturated Esters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Andrew David Smith
- University of St Andrews School of Chemistry North Haugh FIFE, KY10 3TH St. Andrews UNITED KINGDOM
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5
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Qu S, Smith SM, Laina‐Martín V, Neyyappadath RM, Greenhalgh MD, Smith AD. Isothiourea-Catalyzed Acylative Kinetic Resolution of Tertiary α-Hydroxy Esters. Angew Chem Int Ed Engl 2020; 59:16572-16578. [PMID: 32491267 PMCID: PMC7540711 DOI: 10.1002/anie.202004354] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/28/2020] [Indexed: 01/08/2023]
Abstract
A highly enantioselective isothiourea-catalyzed acylative kinetic resolution (KR) of acyclic tertiary alcohols has been developed. Selectivity factors of up to 200 were achieved for the KR of tertiary alcohols bearing an adjacent ester substituent, with both reaction conversion and enantioselectivity found to be sensitive to the steric and electronic environment at the stereogenic tertiary carbinol centre. For more sterically congested alcohols, the use of a recently-developed isoselenourea catalyst was optimal, with equivalent enantioselectivity but higher conversion achieved in comparison to the isothiourea HyperBTM. Diastereomeric acylation transition state models are proposed to rationalize the origins of enantiodiscrimination in this process. This KR procedure was also translated to a continuous-flow process using a polymer-supported variant of the catalyst.
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Affiliation(s)
- Shen Qu
- EaStChemSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Samuel M. Smith
- EaStChemSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Víctor Laina‐Martín
- EaStChemSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | | | - Mark D. Greenhalgh
- EaStChemSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Andrew D. Smith
- EaStChemSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
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6
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Qu S, Smith SM, Laina‐Martín V, Neyyappadath RM, Greenhalgh MD, Smith AD. Isothiourea‐Catalyzed Acylative Kinetic Resolution of Tertiary α‐Hydroxy Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shen Qu
- EaStChemSchool of ChemistryUniversity of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Samuel M. Smith
- EaStChemSchool of ChemistryUniversity of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Víctor Laina‐Martín
- EaStChemSchool of ChemistryUniversity of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | | | - Mark D. Greenhalgh
- EaStChemSchool of ChemistryUniversity of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Andrew D. Smith
- EaStChemSchool of ChemistryUniversity of St Andrews North Haugh St Andrews Fife KY16 9ST UK
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7
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Munday ES, Grove MA, Feoktistova T, Brueckner AC, Walden DM, Young CM, Slawin AMZ, Campbell AD, Cheong PH, Smith AD. Isothiourea‐Catalyzed Atropselective Acylation of Biaryl Phenols via Sequential Desymmetrization/Kinetic Resolution. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916480] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Elizabeth S. Munday
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Markas A. Grove
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Taisiia Feoktistova
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | | | - Daniel M. Walden
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Claire M. Young
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Andrew D. Campbell
- Pharmaceutical Technology and Development AstraZeneca Silk Road Business Park Macclesfield Cheshire SK10 2NA UK
| | - Paul Ha‐Yeon Cheong
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
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8
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Munday ES, Grove MA, Feoktistova T, Brueckner AC, Walden DM, Young CM, Slawin AMZ, Campbell AD, Cheong PH, Smith AD. Isothiourea‐Catalyzed Atropselective Acylation of Biaryl Phenols via Sequential Desymmetrization/Kinetic Resolution. Angew Chem Int Ed Engl 2020; 59:7897-7905. [DOI: 10.1002/anie.201916480] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Indexed: 01/03/2023]
Affiliation(s)
- Elizabeth S. Munday
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Markas A. Grove
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Taisiia Feoktistova
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | | | - Daniel M. Walden
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Claire M. Young
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Andrew D. Campbell
- Pharmaceutical Technology and Development AstraZeneca Silk Road Business Park Macclesfield Cheshire SK10 2NA UK
| | - Paul Ha‐Yeon Cheong
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews KY16 9ST UK
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9
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Murata T, Futami K, Ishikawa R, Ono K, Nakata K, Shiina I. Kinetic Resolution of Racemic 2‐Hydroxyarylketones by Asymmetric Esterification: Investigation of the Influence of the Co‐Base on the Selectivity. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Takatsugu Murata
- Department of Applied Chemistry Faculty of ScienceTokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Kengo Futami
- Department of Applied Chemistry Faculty of ScienceTokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Ryo Ishikawa
- Department of Applied Chemistry Faculty of ScienceTokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Keisuke Ono
- Department of Applied Chemistry Faculty of ScienceTokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Kenya Nakata
- Department of Chemistry Graduate School of Natural Science and TechnologyShimane University 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Isamu Shiina
- Department of Applied Chemistry Faculty of ScienceTokyo University of Science 1–3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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10
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Wang C, Li SJ, Zhang M, Wei D, Ding L. Origin of stereoselectivity in an isothiourea catalyzed Michael addition reaction of aryl ester with vinyl disulfone. NEW J CHEM 2020. [DOI: 10.1039/d0nj03540h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The origin of stereoselectivity in an isothiourea-catalyzed addition reaction of aryl ester with vinyl disulfone was explored for the first time.
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Affiliation(s)
- Congcong Wang
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province
- Key Laboratory of Technology of Drug Preparation (Zhengzhou University)
- Ministry of Education of China
- Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences
- Zhengzhou University
| | - Shi-Jun Li
- College of Chemistry, and Institute of Green Catalysis
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Min Zhang
- College of Chemistry, and Institute of Green Catalysis
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Donghui Wei
- College of Chemistry, and Institute of Green Catalysis
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Lina Ding
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province
- Key Laboratory of Technology of Drug Preparation (Zhengzhou University)
- Ministry of Education of China
- Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences
- Zhengzhou University
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11
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Ichimura T, Kishida R, Nakata K. Acylative Kinetic Resolution of Racemic 2,2‐Dimethyl‐Substituted Nitroaldol (Henry) Adducts Using a Chiral Guanidine Catalyst: (
R
)‐(+)‐
N
‐Methylbenzoguanidine ((
R
)‐NMBG). ChemistrySelect 2019. [DOI: 10.1002/slct.201902236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Taiju Ichimura
- Department of ChemistryGraduate School of Natural Science and TechnologyShimane University 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Ryota Kishida
- Department of ChemistryGraduate School of Natural Science and TechnologyShimane University 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
| | - Kenya Nakata
- Department of ChemistryGraduate School of Natural Science and TechnologyShimane University 1060 Nishikawatsu, Matsue Shimane 690-8504 Japan
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12
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Qu S, Greenhalgh MD, Smith AD. Isothiourea-Catalysed Regioselective Acylative Kinetic Resolution of Axially Chiral Biaryl Diols. Chemistry 2019; 25:2816-2823. [PMID: 30548466 DOI: 10.1002/chem.201805631] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/11/2018] [Indexed: 12/13/2022]
Abstract
An operationally simple isothiourea-catalysed acylative kinetic resolution of unprotected 1,1'-biaryl-2,2'-diol derivatives has been developed to allow access to axially chiral compounds in highly enantioenriched form (s values up to 190). Investigation of the reaction scope and limitations provided three key observations: i) the diol motif of the substrate was essential for good conversion and high s values; ii) the use of an α,α-disubstituted mixed anhydride (2,2-diphenylacetic pivalic anhydride) was critical to minimize diacylation and give high selectivity; iii) the presence of substituents in the 3,3'-positions of the diol hindered effective acylation. This final observation was exploited for the highly regioselective acylative kinetic resolution of unsymmetrical biaryl diol substrates bearing a single 3-substituent. Based on the key observations identified, acylation transition state models have been proposed to explain the atropselectivity of this kinetic resolution.
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Affiliation(s)
- Shen Qu
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK
| | - Mark D Greenhalgh
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK
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13
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Affiliation(s)
- Shinji Yamada
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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14
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Murata T, Kuboki T, Ishikawa R, Saito T, Taguchi S, Takeuchi K, Hatano E, Shimonaka M, Shiina I. Total Synthesis of Violaceoid A and (-)- and (+)-Violaceoid B. JOURNAL OF NATURAL PRODUCTS 2018; 81:2364-2370. [PMID: 30375869 DOI: 10.1021/acs.jnatprod.8b00215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The first total synthesis of violaceoid A, a cytotoxic agent, and the asymmetric total synthesis of (-)- and (+)-violaceoid B are reported. The precursor was accessed by desymmetrization of a substituted quinol moiety, and the racemic secondary alcohol was kinetically resolved using a chiral nucleophilic catalyst. The asymmetric synthesis of (-)- and (+)-violaceoid B elucidated the absolute configuration of the naturally occurring violaceoid B. Synthetic violaceoid A inhibited the growth of human breast cancer cell lines MCF-7 and Hs 578T at concentrations of less than 100 μM, while ( S)- and ( R)-violaceoid B were inactive.
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Affiliation(s)
- Takatsugu Murata
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Teppei Kuboki
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Ryo Ishikawa
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Takahiro Saito
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Shotaro Taguchi
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Kazuma Takeuchi
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Emiko Hatano
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Motoyuki Shimonaka
- Department of Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
| | - Isamu Shiina
- Department of Applied Chemistry, Faculty of Science , Tokyo University of Science , 1-3 Kagurazaka , Shinjuku-ku, Tokyo 162-8601 , Japan
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15
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Murata T, Kawanishi T, Sekiguchi A, Ishikawa R, Ono K, Nakata K, Shiina I. Kinetic Resolution of Racemic 2-Hydroxyamides Using a Diphenylacetyl Component as an Acyl Source and a Chiral Acyl-Transfer Catalyst. Molecules 2018; 23:molecules23082003. [PMID: 30103468 PMCID: PMC6222459 DOI: 10.3390/molecules23082003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 11/16/2022] Open
Abstract
Various optically active 2-hydroxyamide derivatives are produced based on the kinetic resolution of racemic 2-hydroxyamides with a diphenylacetyl component and (R)-benzotetramisole ((R)-BTM), a chiral acyl-transfer catalyst, via asymmetric esterification and acylation. It was revealed that a tertiary amide can be used with this novel protocol to achieve high selectivity (22 examples; s-value reaching over 250). The resulting chiral compounds could be transformed into other useful structures while maintaining their chirality.
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Affiliation(s)
- Takatsugu Murata
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
| | - Tatsuya Kawanishi
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
| | - Akihiro Sekiguchi
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
| | - Ryo Ishikawa
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
| | - Keisuke Ono
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
| | - Kenya Nakata
- Graduate School of Natural Science and Technology, Shimane University, Shimane 690-8504, Japan.
| | - Isamu Shiina
- Department of Appliaed Chemistry, Faculty of Science, Tokyo University of Science, Tokyo 162-8601, Japan.
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16
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Greenhalgh MD, Smith SM, Walden DM, Taylor JE, Brice Z, Robinson ERT, Fallan C, Cordes DB, Slawin AMZ, Richardson HC, Grove MA, Cheong PH, Smith AD. A C=O⋅⋅⋅Isothiouronium Interaction Dictates Enantiodiscrimination in Acylative Kinetic Resolutions of Tertiary Heterocyclic Alcohols. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712456] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mark D. Greenhalgh
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Samuel M. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Daniel M. Walden
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - James E. Taylor
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Zamira Brice
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Emily R. T. Robinson
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Charlene Fallan
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - David B. Cordes
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - H. Camille Richardson
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Markas A. Grove
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Paul Ha‐Yeon Cheong
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
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17
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Greenhalgh MD, Smith SM, Walden DM, Taylor JE, Brice Z, Robinson ERT, Fallan C, Cordes DB, Slawin AMZ, Richardson HC, Grove MA, Cheong PH, Smith AD. A C=O⋅⋅⋅Isothiouronium Interaction Dictates Enantiodiscrimination in Acylative Kinetic Resolutions of Tertiary Heterocyclic Alcohols. Angew Chem Int Ed Engl 2018; 57:3200-3206. [DOI: 10.1002/anie.201712456] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Mark D. Greenhalgh
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Samuel M. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Daniel M. Walden
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - James E. Taylor
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Zamira Brice
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Emily R. T. Robinson
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Charlene Fallan
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - David B. Cordes
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
| | - H. Camille Richardson
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Markas A. Grove
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Paul Ha‐Yeon Cheong
- Department of Chemistry Oregon State University 153 Gilbert Hall Corvallis OR 97331 USA
| | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews North Haugh St Andrews Fife KY16 9ST UK
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18
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Neyyappadath RM, Chisholm R, Greenhalgh MD, Rodríguez-Escrich C, Pericàs MA, Hähner G, Smith AD. Acylative Kinetic Resolution of Alcohols Using a Recyclable Polymer-Supported Isothiourea Catalyst in Batch and Flow. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04001] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Ross Chisholm
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K
| | - Mark D. Greenhalgh
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K
| | - Carles Rodríguez-Escrich
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Miquel A. Pericàs
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Department
de Química Inorgànica i Orgànica, Universitat de Barcelona, 08080 Barcelona, Spain
| | - Georg Hähner
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K
| | - Andrew D. Smith
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K
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19
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Hara N, Fujisawa S, Fujita M, Miyazawa M, Ochiai K, Katsuda S, Fujimoto T. Kinetic resolution of sterically hindered secondary alcohols catalyzed by aminophosphinite organocatalyst. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Fujii K, Mitsudo K, Mandai H, Suga S. Kinetic Resolution of Secondary Carbinols by a ChiralN,N-4-Dimethylaminopyridine Derivative Containing a 1,1′-Binaphthyl Unit: Hydrogen Bonding Affects Catalytic Activity and Enantioselectivity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160135] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Merad J, Pons JM, Chuzel O, Bressy C. Enantioselective Catalysis by Chiral Isothioureas. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600399] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jérémy Merad
- Aix Marseille Université, Centrale Marseille; CNRS, iSm2 UMR 7313; 13397 Marseille France
| | - Jean-Marc Pons
- Aix Marseille Université, Centrale Marseille; CNRS, iSm2 UMR 7313; 13397 Marseille France
| | - Olivier Chuzel
- Aix Marseille Université, Centrale Marseille; CNRS, iSm2 UMR 7313; 13397 Marseille France
| | - Cyril Bressy
- Aix Marseille Université, Centrale Marseille; CNRS, iSm2 UMR 7313; 13397 Marseille France
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22
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Lipp A, Lahm G, Opatz T. Light Induced C–C Coupling of 2-Chlorobenzazoles with Carbamates, Alcohols, and Ethers. J Org Chem 2016; 81:4890-7. [DOI: 10.1021/acs.joc.6b00715] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Alexander Lipp
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Günther Lahm
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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23
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Zhang Z, Wang M, Xie F, Sun H, Zhang W. Chiral Bicyclic Imidazole Nucleophilic Catalysts: Design, Synthesis, and Application to the Kinetic Resolution of Arylalkylcarbinols. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400415] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Shiina I. An Adventurous Synthetic Journey with MNBA from Its Reaction Chemistry to the Total Synthesis of Natural Products. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130216] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Isamu Shiina
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science
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25
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Shiina I, Nakata K. Development of Kinetic Resolution of Racemic Alcohols and Carboxylic Acids Accompanied with Dehydration Condensation. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Nakata K, Tokumaru T, Iwamoto H, Nishigaichi Y, Shiina I. An Enantiodivergent Synthesis of (+)- and (−)-Centrolobines by Asymmetric Esterification Catalyzed by (R)-(+)-N-Methylbenzoguanidine ((R)-NMBG). ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300139] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Ranieri B, Robles O, Romo D. Concise Synthesis of the Isothiourea Organocatalysts Homobenzotetramisole and Derivatives. J Org Chem 2013; 78:6291-6. [DOI: 10.1021/jo400603n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Beatrice Ranieri
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Omar Robles
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | - Daniel Romo
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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28
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Nakata K, Gotoh K, Ono K, Futami K, Shiina I. Kinetic resolution of racemic 2-hydroxy-γ-butyrolactones by asymmetric esterification using diphenylacetic acid with pivalic anhydride and a chiral acyl-transfer catalyst. Org Lett 2013; 15:1170-3. [PMID: 23461674 DOI: 10.1021/ol303453j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various optically active 2-hydroxy-γ-butyrolactone derivatives are produced via the kinetic resolution of racemic 2-hydroxy-γ-butyrolactones with diphenylacetic acid using pivalic anhydride and (R)-benzotetramisole ((R)-BTM), a chiral acyl-transfer catalyst. Importantly, the substrate scope of this novel protocol is fairly broad (12 examples, s-value; up to over 1000). In addition, we succeeded in disclosing the reaction mechanism to afford high enantioselectivity using theoretical calculations and expounded on the substituent effects at the C-3 positions in 2-hydroxylactones.
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Affiliation(s)
- Kenya Nakata
- Department of Chemistry, Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan
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29
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Robinson ERT, Fallan C, Simal C, Slawin AMZ, Smith AD. Anhydrides as α,β-unsaturated acyl ammonium precursors: isothiourea-promoted catalytic asymmetric annulation processes. Chem Sci 2013. [DOI: 10.1039/c3sc50199j] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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30
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Morrill LC, Douglas J, Lebl T, Slawin AMZ, Fox DJ, Smith AD. Isothiourea-mediated asymmetric Michael-lactonisation of trifluoromethylenones: a synthetic and mechanistic study. Chem Sci 2013. [DOI: 10.1039/c3sc51791h] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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31
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Shiina I, Nakata K, Ono K, Mukaiyama T. Kinetic Resolution of Racemic Secondary Benzylic Alcohols by the Enantioselective Esterification Using Pyridine-3-carboxylic Anhydride (3-PCA) with Chiral Acyl-Transfer Catalysts. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200434] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Nakata K. Development of Novel Methods for Preparing Chiral Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) by Asymmetric Esterification. YAKUGAKU ZASSHI 2012; 132:993-1000. [DOI: 10.1248/yakushi.132.993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kenya Nakata
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science
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33
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Shiina I, Umezaki Y, Kuroda N, Iizumi T, Nagai S, Katoh T. MNBA-Mediated β-Lactone Formation: Mechanistic Studies and Application for the Asymmetric Total Synthesis of Tetrahydrolipstatin. J Org Chem 2012; 77:4885-901. [DOI: 10.1021/jo300139r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isamu Shiina
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
| | - Yuma Umezaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
| | - Nobutaka Kuroda
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
| | - Takashi Iizumi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
| | - Shunsuke Nagai
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
| | - Takashi Katoh
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku,
Tokyo 162-8601, Japan
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34
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35
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Li X, Jiang H, Uffman EW, Guo L, Zhang Y, Yang X, Birman VB. Kinetic resolution of secondary alcohols using amidine-based catalysts. J Org Chem 2012; 77:1722-37. [PMID: 22283696 PMCID: PMC3291098 DOI: 10.1021/jo202220x] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Kinetic resolution of racemic alcohols has been traditionally achieved via enzymatic enantioselective esterification and ester hydrolysis. However, there has long been considerable interest in devising nonenzymatic alternative methods for this transformation. Amidine-based catalysts (ABCs), a new class of enantioselective acyl transfer catalysts developed in our group, have demonstrated, inter alia, high efficacy in the kinetic resolution of benzylic, allylic, and propargylic secondary alcohols and 2-substituted cycloalkanols, and thus provide a viable alternative to enzymes.
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Affiliation(s)
- Ximin Li
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Hui Jiang
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Eric W. Uffman
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Lei Guo
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Yuhua Zhang
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Xing Yang
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
| | - Vladimir B. Birman
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130
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36
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Joannesse C, Johnston CP, Morrill LC, Woods PA, Kieffer M, Nigst TA, Mayr H, Lebl T, Philp D, Bragg RA, Smith AD. Isothiourea-Mediated Asymmetric O- to C-Carboxyl Transfer of Oxazolyl Carbonates: Structure-Selectivity Profiles and Mechanistic Studies. Chemistry 2012; 18:2398-408. [DOI: 10.1002/chem.201102847] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Indexed: 11/07/2022]
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37
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Morrill LC, Lebl T, Slawin AMZ, Smith AD. Catalytic asymmetric α-amination of carboxylic acids using isothioureas. Chem Sci 2012. [DOI: 10.1039/c2sc20171b] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Nakata K, Sekiguchi A, Shiina I. A convenient method for the kinetic resolution of racemic 2-hydroxyalkanoates using diphenylacetic anhydride (DPHAA) and a chiral acyl-transfer catalyst. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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39
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Yang X, Birman VB. Kinetic resolution of α-substituted alkanoic acids promoted by homobenzotetramisole. Chemistry 2011; 17:11296-304. [PMID: 21922562 DOI: 10.1002/chem.201101028] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 06/06/2011] [Indexed: 11/09/2022]
Abstract
A new method for catalytic nonenzymatic kinetic resolution of α-substituted alkanoic acids has been developed, which relies on their activation with DCC followed by enantioselective alcoholysis of the intermediate symm-anhydrides in the presence of the amidine-based catalyst homobenzotetramisole (HBTM). Moderate to excellent selectivity factors (s=5-96) have been obtained in the case of several classes of substrates, namely, α-aryl-, α-aryloxy/alkoxy-, α-halo-, α-azido-, and α-phthalimido-alkanoic acids. Under similar conditions, α-(arylthio/alkylthio)-alkanoic acids undergo dynamic kinetic resolution providing corresponding esters in up to 92% ee and up to 93% yield.
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Affiliation(s)
- Xing Yang
- Department of Chemistry, Washington University, Saint Louis, Missouri 63130, USA
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40
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Woods PA, Morrill LC, Bragg RA, Smith AD. Isothiourea-Catalysed Asymmetric C-Acylation of Silyl Ketene Acetals. Chemistry 2011; 17:11060-7. [DOI: 10.1002/chem.201100995] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/31/2011] [Indexed: 11/07/2022]
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41
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Bumbu VD, Birman VB. Kinetic resolution of N-acyl-β-lactams via benzotetramisole-catalyzed enantioselective alcoholysis. J Am Chem Soc 2011; 133:13902-5. [PMID: 21823609 DOI: 10.1021/ja2058633] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first nonenzymatic kinetic resolution of β-lactams has been achieved. Alcoholysis of their N-aroyl derivatives in the presence of a simple chiral acyl transfer catalyst, benzotetramisole, produces β-amino acid derivatives with excellent enantioselectivity.
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Affiliation(s)
- Valentina D Bumbu
- Department of Chemistry, Washington University, St. Louis, Missouri 63130, United States
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42
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Maji B, Joannesse C, Nigst TA, Smith AD, Mayr H. Nucleophilicities and Lewis Basicities of Isothiourea Derivatives. J Org Chem 2011; 76:5104-12. [DOI: 10.1021/jo200803x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Biplab Maji
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5−13 (Haus F), 81377 München, Germany
| | - Caroline Joannesse
- EaStCHEM, School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Tobias A. Nigst
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5−13 (Haus F), 81377 München, Germany
| | - Andrew D. Smith
- EaStCHEM, School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5−13 (Haus F), 81377 München, Germany
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43
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Campbell CD, Concellón C, Smith AD. Catalytic enantioselective Steglich rearrangements using chiral N-heterocyclic carbenes. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.04.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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