1
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Gröger H, Horino S, Kanomata K, Akai S. Strategies to Design Chemocatalytic Racemization of Tertiary Alcohols: State of the Art & Utilization for Dynamic Kinetic Resolution. Chemistry 2024; 30:e202304028. [PMID: 38580616 DOI: 10.1002/chem.202304028] [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: 12/03/2023] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/07/2024]
Abstract
The synthesis of enantiomerically pure tertiary alcohols is an important issue in organic synthesis of a range of pharmaceuticals including molecules such as the anti-HIV drug Efavirenz. A conceptually elegant approach to such enantiomers is the dynamic kinetic resolution of racemic tertiary alcohols, which, however, requires efficient racemization strategies. The racemization of tertiary alcohols is particularly challenging due to various side reactions that can occur because of their high tendency for elimination reactions. In the last few years, several complementary catalytic concepts for racemization of tertiary alcohols have been developed, characterized by efficient racemization and suppression of unwanted side-reactions. Besides resins bearing sulfonic acid moieties and a combination of boronic acid and oxalic acid as heterogeneous and homogeneous Brønsted-acids, respectively, immobilized oxovanadium and piperidine turned out to be useful catalysts. The latter two catalysts, which have already been applied to different types of substrates, also have proven good compatibility with lipase, thus leading to the first two examples of chemoenzymatic dynamic kinetic resolution of tertiary alcohols. In this review, the difficulties in racemizing tertiary alcohols are specifically described, and the recently developed complementary concepts to overcome these hurdles are summarized.
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Affiliation(s)
- Harald Gröger
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Satoshi Horino
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kyohei Kanomata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
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2
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Kim S, An J, Choi H, Jung SH, Lee SS, Park IH. Construction of Photoreactive Chiral Metal-Organic Frameworks and Their [2 + 2] Photocycloaddition Reactions. Inorg Chem 2023; 62:13173-13178. [PMID: 37552800 DOI: 10.1021/acs.inorgchem.3c02349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Chiral metal-organic frameworks (CMOFs) and solid-state [2 + 2] photocyclization have been explored as independent areas in crystal engineering. We herein report the photoreactive CMOFs that undergo a [2 + 2] photocycloaddition reaction for the first time. Through the incorporation of a dipyridyl olefin ligand, 1,4-bis[2-(4-pyridyl)ethenyl]benzene, and d-camphoric acid or l-camphoric acid, we constructed a pair of homochiral Zn(II) CMOFs (d-1 or l-1) with a two-dimensional sql topology via a two-step procedure to avoid racemization. Both d-1 and l-1 were photoinert due to the large olefin bond separation. The removal of the solvent molecules between layers enabled them (d-1a and l-1a) to undergo [2 + 2] cycloaddition reactions; d-1a is more reactive (70%) than l-1a (20%) probably due to proper desolvation-induced rearrangement. The photoluminescence properties are also discussed. This work presents a new perspective on photoreactive homochiral network materials with diverse topologies and applications.
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Affiliation(s)
- Seulgi Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea
| | - Jaewook An
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
| | - Heekyoung Choi
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
| | - Sung Ho Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea
| | - Shim Sung Lee
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
| | - In-Hyeok Park
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, South Korea
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3
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Gao WB, Li Z, Tong T, Dong X, Qu H, Yang L, Sue ACH, Tian ZQ, Cao XY. Chiral Molecular Cage with Tunable Stereoinversion Barriers. J Am Chem Soc 2023; 145:17795-17804. [PMID: 37527407 DOI: 10.1021/jacs.3c04761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
The manipulation of chirality in molecular entities that rapidly interconvert between enantiomeric forms is challenging, particularly at the supramolecular level. Advances in controlling such dynamic stereochemical systems offer opportunities to understand chiral symmetry breaking and homochirality. Herein, we report the synthesis of a face-rotating tetrahedron (FRT), an organic molecular cage composed of tridurylborane facial units that undergo stereomutations between enantiomeric trefoil propeller-like conformations. After resolution, we show that the racemization barrier of the enantiopure FRT can be regulated in situ through the reversible binding of fluoride anions onto the tridurylborane moieties. Furthermore, the addition of an enantiopure phenylethanol to the FRT can effectively induce chirality of the molecular cage by preferentially binding to one of its enantiomeric conformers. This study presents a new paradigm for controlling dynamic chirality in supramolecular systems, which may have implications for asymmetric synthesis and dynamic stereochemistry.
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Affiliation(s)
- Wen-Bin Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhihao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Tianyi Tong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xue Dong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hang Qu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Liulin Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Andrew C-H Sue
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zhong-Qun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xiao-Yu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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4
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Cox RJ, McCreanor NG, Morrison JA, Munday RH, Taylor BA. Copper-Catalyzed Racemization-Recycle of a Quaternary Center and Optimization Using a Combined Kinetics-DoE/MLR Modeling Approach. J Org Chem 2023; 88:5275-5284. [PMID: 37067823 DOI: 10.1021/acs.joc.2c02588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
The copper-catalyzed racemization of a complex, quaternary center of a key intermediate on route to lanabecestat has been identified. Optimization and mechanistic understanding were achieved through the use of an efficient, combined kinetic-multiple linear regression approach to experimental design and modeling. The use of a definitive screening design with mechanistically relevant factors and a mixture of fitted kinetic descriptors and empirical measurements facilitated the generation of a model that accurately predicted complex reaction time course behavior. The synergistic model was used to minimize the formation of dimer byproducts, determine optimal conditions for batch operation, and highlight superheated conditions that could be accessed in flow, leading to a further increase in yield which was predicted by the original model.
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Affiliation(s)
- Robert J Cox
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Niall G McCreanor
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - James A Morrison
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Rachel H Munday
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Brian A Taylor
- Chemical Development, Pharmaceutical Technology and Development, Operations, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, U.K
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5
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Wang H, Wan N, Miao R, He C, Chen Y, Liu Z, Zheng Y. Identification and Structure Analysis of an Unusual Halohydrin Dehalogenase for Highly Chemo‐, Regio‐ and Enantioselective Bio‐Nitration of Epoxides. Angew Chem Int Ed Engl 2022; 61:e202205790. [DOI: 10.1002/anie.202205790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Hui‐Hui Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province College of Biotechnology and Bioengineering Zhejiang University of Technology Hangzhou 310014 China
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi China
| | - Nan‐Wei Wan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi China
| | - Run‐Ping Miao
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi China
| | - Cheng‐Li He
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi China
| | - Yong‐Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi China
| | - Zhi‐Qiang Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province College of Biotechnology and Bioengineering Zhejiang University of Technology Hangzhou 310014 China
| | - Yu‐Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province College of Biotechnology and Bioengineering Zhejiang University of Technology Hangzhou 310014 China
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6
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Boyce GR, Musolino SF, Yang J, Smith AD, Taylor JE. Arylboronic Acid-Catalyzed Racemization of Secondary and Tertiary Alcohols. J Org Chem 2022; 87:13367-13374. [PMID: 36075004 PMCID: PMC9552221 DOI: 10.1021/acs.joc.2c01602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The use of 2-carboxyphenylboronic acid (5 mol %) and
oxalic acid
(10 mol %) with 2-butanone as a solvent for the racemization of a
range of enantiomerically pure secondary and tertiary alcohols is
demonstrated. The process is postulated to proceed via reversible
Brønsted acid-catalyzed C–O bond cleavage through an achiral
carbocation intermediate.
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Affiliation(s)
- Gregory R Boyce
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K.,Department of Chemistry and Physics, Florida Gulf Coast University, Fort Myers, Florida 33965, United States
| | - Stefania F Musolino
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
| | - Jianing Yang
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
| | - James E Taylor
- Department of Chemistry, University of Bath, Claverton Down, Bath, Somerset BA2 7AY, U.K
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7
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Wang HH, Wan NW, Miao RP, He CL, Chen YZ, Liu ZQ, Zheng YG. Identification and Structure Analysis of an Unusual Halohydrin Dehalogenase for Highly Chemo‐, Regio‐ and Enantioselective Bio‐Nitration of Epoxides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205790] [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)
- Hui-Hui Wang
- Zunyi Medical University School of Pharmacy CHINA
| | - Nan-Wei Wan
- Zunyi Medical University School of Pharmacy CHINA
| | | | - Cheng-Li He
- Zunyi Medical University School of Pharmacy CHINA
| | | | - Zhi-Qiang Liu
- Zhejiang University of Technology College of Biotechnology and Bioengineering Chaowang Rd. 18# 3100114 Hangzhou CHINA
| | - Yu-Guo Zheng
- Zhejiang University of Technology College of Biotechnology and Bioengineering CHINA
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8
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Zhang X, Ma W, Zhang J, Tang W, Xue D, Xiao J, Sun H, Wang C. Asymmetric Ruthenium‐Catalyzed Hydroalkylation of Racemic Allylic Alcohols for the Synthesis of Chiral Amino Acid Derivatives. Angew Chem Int Ed Engl 2022; 61:e202203244. [DOI: 10.1002/anie.202203244] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Indexed: 01/07/2023]
Affiliation(s)
- Xiaohui Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Wei Ma
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
- School of Basic Medical Science Ningxia Medical University Yinchuan 750004 China
| | - Jinyu Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Weijun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
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9
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Xie QX, Liu LX, Zhu ZH, Yu CB, Zhou YG. Asymmetric Transfer Hydrogenation of 2,3-Disubstituted Flavanones through Dynamic Kinetic Resolution Enabled by Retro-Oxa-Michael Addition: Construction of Three Contiguous Stereogenic Centers. J Org Chem 2022; 87:7521-7530. [PMID: 35605190 DOI: 10.1021/acs.joc.2c00418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A ruthenium-catalyzed asymmetric transfer hydrogenation of 2,3-disubstituted flavanones was developed for the construction of three contiguous stereocenters under basic conditions through a combination of dynamic kinetic resolution and retro-oxa-Michael addition, giving chiral flavanols with excellent enantioselectivities and diastereoselectivities. The reaction proceeded via a base-catalyzed retro-oxa-Michael addition to racemize two stereogenic centers simultaneously in concert with a highly enantioselective ketone transfer hydrogenation step. The asymmetric transfer hydrogenation could be achieved at gram scale without loss of the activity and enantioselectivity.
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Affiliation(s)
- Qing-Xian Xie
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China.,University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Li-Xia Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Zhou-Hao Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Chang-Bin Yu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
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10
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Zhang X, Ma W, Zhang J, Tang W, Xue D, Xiao J, Sun H, Wang C. Asymmetric Ruthenium‐Catalyzed Hydroalkylation of Racemic Allylic Alcohols for the Synthesis of Chiral Amino Acid Derivatives. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203244] [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)
- Xiaohui Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Wei Ma
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
- School of Basic Medical Science Ningxia Medical University Yinchuan 750004 China
| | - Jinyu Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Weijun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
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11
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Photochemical α-Deracemization of Carbonyl Compounds. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Zakharov DO, Chernichenko K, Sorochkina K, Repo T, Zhivonitko VV. Parahydrogen-induced polarization study of imine hydrogenations mediated by a metal-free catalyst. Dalton Trans 2022; 51:13606-13611. [DOI: 10.1039/d2dt02178a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Parahydrogen-induced polarization is a nuclear spin hyperpolarization technique that can provide strongly enhanced NMR signals of catalytic hydrogenation reaction products and intermediates. Among other matters, this can be employed to...
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13
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Miura T, Ishihara Y, Nakamuro T, Moritani S, Nagata Y, Murakami M. Synthesis, Structure, and Dynamics of Chiral Eight-Membered Cyclic Molecules with Thienylene and Cyclopropylene Units Alternately Connected. Chemistry 2021; 28:e202103962. [PMID: 34928539 DOI: 10.1002/chem.202103962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Indexed: 11/09/2022]
Abstract
A rhodium(II)-catalyzed asymmetric cyclooligomerization of bifunctional monomers possessing triazolyl and vinyl groups at 2,3- and 3,4-positions on the thiophene ring is studied. Structurally interesting cyclic dimers in which thienylene and cyclopropylene units are alternately connected are obtained as the major components. The eight-membered rings in the center are non-planar and adopt a tub-shaped conformation. We also observe the phenomenon of racemization caused by a tub-to-tub ring-flipping, the activation energy of which is determined as 108 kJ mol -1 by electronic circular dichroism spectra measurement.
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Affiliation(s)
- Tomoya Miura
- Okayama University, Division of Applied Chemistry, Tsushimanaka 3-1-1, 700-8530, Okayama, JAPAN
| | - Yumi Ishihara
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Takayuki Nakamuro
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Shunsuke Moritani
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
| | - Yuuya Nagata
- Hokkaido University, Institute for Chemical Reaction Design and Discovery, JAPAN
| | - Masahiro Murakami
- Kyoto University, Department of Synthetic Chemistry and Biological Chemistry, JAPAN
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14
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Song G, Yang L, Li J, Tang W, Zhang W, Cao R, Wang C, Xiao J, Xue D. Chiral Arylated Amines via C−N Coupling of Chiral Amines with Aryl Bromides Promoted by Light. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Geyang Song
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Liu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Jing‐Sheng Li
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Wei‐Jun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
| | - Jianliang Xiao
- Department of Chemistry University of Liverpool Liverpool L69 7ZD UK
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China
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15
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Song G, Yang L, Li JS, Tang WJ, Zhang W, Cao R, Wang C, Xiao J, Xue D. Chiral Arylated Amines via C-N Coupling of Chiral Amines with Aryl Bromides Promoted by Light. Angew Chem Int Ed Engl 2021; 60:21536-21542. [PMID: 34260129 DOI: 10.1002/anie.202108587] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 01/08/2023]
Abstract
The Buchwald-Hartwig C-N coupling reaction has found widespread applications in organic synthesis. Over the past two decades or so, many improved catalysts have been introduced, allowing various amines and aryl electrophiles to be readily used nowadays. However, there lacks a protocol that could be used to couple a wide range of chiral amines and aryl halides, without erosion of the enantiomeric excess (ee). Reported in this article is a method based on molecular Ni catalysis driven by light, which enables stereoretentive C-N coupling of optically active amines, amino alcohols, and amino acid esters with aryl bromides, with no need for any external photosensitizer. The method is effective for a wide variety of coupling partners, including those bearing functional groups sensitive to bases and nucleophiles, thus providing a viable alternative to accessing synthetically important chiral N-aryl amines, amino alcohols, and amino acids esters. Its viability is demonstrated by 92 examples with up to 99 % ee.
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Affiliation(s)
- Geyang Song
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Liu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Jing-Sheng Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Wei-Jun Tang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
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16
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Beaver MG, Caille S, Içten E, Michalak SE, St‐Pierre G, Thiel OR. Green Chemistry as a Driver for Innovation in the Pharmaceutical Industry. Isr J Chem 2021. [DOI: 10.1002/ijch.202100006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matthew G. Beaver
- Amgen Inc., Process Development, Drug Substance Technologies 360 Binney Street Cambridge Massachusetts United States
| | - Seb Caille
- Amgen Inc., Process Development, Drug Substance Technologies, One Amgen Center Drive Thousand Oaks California 91320 United States
| | - Elçin Içten
- Amgen Inc., Process Development, Drug Substance Technologies 360 Binney Street Cambridge Massachusetts United States
| | - Sharon E. Michalak
- Amgen Inc., Process Development, Drug Substance Technologies, One Amgen Center Drive Thousand Oaks California 91320 United States
| | - Gabrielle St‐Pierre
- Amgen Inc., Process Development, Drug Substance Technologies, One Amgen Center Drive Thousand Oaks California 91320 United States
| | - Oliver R. Thiel
- Amgen Inc., Process Development, Drug Substance Technologies 360 Binney Street Cambridge Massachusetts United States
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17
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Breveglieri F, Otgonbayar T, Mazzotti M. Optimizing the Yield of a Pure Enantiomer by Integrating Chiral SMB Chromatography and Racemization. Part 2: Theory. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
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18
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Breveglieri F, Otgonbayar T, Mazzotti M. Optimizing the Yield of a Pure Enantiomer by Integrating Chiral SMB Chromatography and Racemization. Part 1: Experiments. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
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19
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Kwan MHT, Breen J, Bowden M, Conway L, Crossley B, Jones MF, Munday R, Pokar NPB, Screen T, Blacker AJ. Continuous Flow Chiral Amine Racemization Applied to Continuously Recirculating Dynamic Diastereomeric Crystallizations. J Org Chem 2021; 86:2458-2473. [PMID: 33482690 DOI: 10.1021/acs.joc.0c02617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new, dynamic diastereomeric crystallization method has been developed, in which the mother liquors are continuously separated, racemized over a fixed-bed catalyst, and recirculated to the crystallizer in a resolution-racemization-recycle (R3) process. Separating the racemization from crystallization overcomes problems of using catalysts in situ, that suffer conflicting sets of conditions, inhibition, and separation. Continuous racemization has been achieved through the covalent attachment of [IrCp*I2]2 SCRAM catalyst to Wang resin solid support to give a fixed-bed catalyst. One tertiary and a variety of secondary optically enriched amines have been racemized efficiently, with residence times compatible with the crystallization (2.25-30 min). The catalyst demonstrates lower turnover (TOF) than the homogeneous analogue but with reuse shows a long lifetime (e.g., 40 recycles, 190 h) giving acceptable turnover number (TON) (up to 4907). The slow release of methylamine during racemization of N-methyl amines was found to inactivate the catalyst, which could be partially reactivated using hydroiodic acid. Dynamic crystallization is achieved in the R3 process through the continual removal of the more soluble diastereomer and supply of the less soluble one. The solubility of the diastereomers was determined, and the difference correlates to the rate of resolution but is also affected by the rates of racemization, crystal growth, and dissolution. A variety of cyclic and acyclic amine salts were resolved using mandelic acid (MA) and ditoluoyl tartaric acid (DTTA) with higher resolvability (S = yield × d.e.) than the simple diastereomeric crystallization alone. Comparing resolvabilities, resolutions were 1.6-44 times more effective with the R3 process than batch, though one case was worse. Further investigation of this revealed an unusual thermodynamic switching behavior: rac-N-methylphenethylamine was initially resolved as an (S,S)-bis-alkylammonium tartrate crystal but over time became the equivalent (R,S) salt. Thermal, mixing, concentration, stoichiometry, and seeding conditions were all found to affect the onset of the switching behavior which is only associated with difunctional resolving reagents.
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Affiliation(s)
- Maria H T Kwan
- School of Chemistry and School of Chemical and Process Engineering. Institute of Process Research and Development. University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, U.K
| | - Jessica Breen
- School of Chemistry and School of Chemical and Process Engineering. Institute of Process Research and Development. University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, U.K
| | | | - Louis Conway
- Syngenta, Jealott's Hill, Bracknell, RG42 6EY, U.K
| | | | - Martin F Jones
- Pharmaceutical Technology and Development, AstraZeneca, Macclesfield, SK10 2NA, U.K
| | - Rachel Munday
- Pharmaceutical Technology and Development, AstraZeneca, Macclesfield, SK10 2NA, U.K
| | - Nisha P B Pokar
- School of Chemistry and School of Chemical and Process Engineering. Institute of Process Research and Development. University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, U.K
| | | | - A John Blacker
- School of Chemistry and School of Chemical and Process Engineering. Institute of Process Research and Development. University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, U.K
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20
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Valenti G, Tinnemans P, Baglai I, Noorduin WL, Kaptein B, Leeman M, Ter Horst JH, Kellogg RM. Combining Incompatible Processes for Deracemization of a Praziquantel Derivative under Flow Conditions. Angew Chem Int Ed Engl 2021; 60:5279-5282. [PMID: 33241861 DOI: 10.1002/anie.202013502] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Indexed: 01/03/2023]
Abstract
An efficient deracemization method for conversion of the racemate to the desirable (R)-enantiomer of Praziquantel has been developed by coupling incompatible racemization and crystallization processes. By a library approach, a derivative that crystallizes as a conglomerate has been identified. Racemization occurs via reversible hydrogenation over a palladium on carbon (Pd/C) packed column at 130 °C, whereas deracemization is achieved by alternating crystal growth/dissolution steps with temperature cycling between 5-15 °C. These incompatible processes are combined by means of a flow system resulting in complete deracemization of the solid phase to the desired (R)-enantiomer (98 % ee). Such an unprecedented deracemization by a decoupled crystallization/racemization approach can readily be turned into a practical process and opens new opportunities for the development of essential enantiomerically pure building blocks that require harsh methods for racemization.
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Affiliation(s)
| | - Paul Tinnemans
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525, AJ, Nijmegen, The Netherlands
| | - Iaroslav Baglai
- AMOLF, Science Park 104, 1098 XG, Amsterdam, The Netherlands
| | - Willem L Noorduin
- AMOLF, Science Park 104, 1098 XG, Amsterdam, The Netherlands.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1090 GD, Amsterdam, The Netherlands
| | - Bernard Kaptein
- InnoSyn BV, Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
| | - Michel Leeman
- Symeres, Kadijk 3, 9747 AT, Groningen, The Netherlands
| | - Joop H Ter Horst
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC), Strathclyde Institute of Pharmacy and Biomedical Sciences, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK
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21
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Valenti G, Tinnemans P, Baglai I, Noorduin WL, Kaptein B, Leeman M, ter Horst JH, Kellogg RM. Combining Incompatible Processes for Deracemization of a Praziquantel Derivative under Flow Conditions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Paul Tinnemans
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | | | - Willem L. Noorduin
- AMOLF Science Park 104 1098 XG Amsterdam The Netherlands
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1090 GD Amsterdam The Netherlands
| | | | | | - Joop H. ter Horst
- EPSRC Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC) Strathclyde Institute of Pharmacy and Biomedical Sciences, Technology and Innovation Centre University of Strathclyde 99 George Street Glasgow G1 1RD UK
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22
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23
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Abuaf M, Mastai Y. Synthesis of Multi Amino Acid Chiral Polymeric Microparticles for Enantioselective Chemistry. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Meir Abuaf
- Department of Chemistry and Institute of Nanotechnology Bar‐Ilan University Ramat‐Gan 52900 Israel
| | - Yitzhak Mastai
- Department of Chemistry and Institute of Nanotechnology Bar‐Ilan University Ramat‐Gan 52900 Israel
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24
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Meimoun J, Favrelle-Huret A, Bria M, Merle N, Stoclet G, De Winter J, Mincheva R, Raquez JM, Zinck P. Epimerization and chain scission of polylactides in the presence of an organic base, TBD. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Qiu J, Stevens JM. High-Throughput Classical Chiral Resolution Screening of Synthetic Intermediates: Effects of Resolving Agents, Crystallization Solvents, and Other Factors. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jun Qiu
- Chemical Process Development, Bristol-Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Jason M. Stevens
- Chemical Process Development, Bristol-Myers Squibb Company, One Squibb Drive, New Brunswick, New Jersey 08903, United States
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26
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Affiliation(s)
- Renat Kadyrov
- Institute of Inorganic ChemistryAcademy of Sciences of the Czech Republic 25068 Řež Czech Republic
- Evonik Resource Efficiency GmbH Rodenbacher Chaussee 4 63457 Hanau Germany
| | - Konrad Moebus
- Evonik Resource Efficiency GmbH Rodenbacher Chaussee 4 63457 Hanau Germany
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27
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Rong ZQ, Yu Z, Weng C, Yang LC, Lu S, Lan Y, Zhao Y. Dynamic Kinetic Asymmetric Amination of Alcohols Assisted by Microwave: Stereoconvergent Access to Tetralin- and Indane-Derived Chiral Amines. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02468] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zi-Qiang Rong
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Cheng Weng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Li-Cheng Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Shenci Lu
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE) & Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Yu Zhao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- China Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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28
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Femmer C, Bechtold M, Held M, Panke S. In vivo directed enzyme evolution in nanoliter reactors with antimetabolite selection. Metab Eng 2020; 59:15-23. [DOI: 10.1016/j.ymben.2020.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 11/16/2022]
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29
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Wang M, Wang X, Feng B, Li Y, Han X, Lan Z, Gu H, Sun H, Shi M, Li H, Li H. Combining Pd nanoparticles on MOFs with cross-linked enzyme aggregates of lipase as powerful chemoenzymatic platform for one-pot dynamic kinetic resolution of amines. J Catal 2019. [DOI: 10.1016/j.jcat.2019.08.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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30
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Zhang Y, Zhang Y, Ramström O. Dynamic Covalent Kinetic Resolution. CATALYSIS REVIEWS, SCIENCE AND ENGINEERING 2019; 62:66-95. [PMID: 33716355 PMCID: PMC7953846 DOI: 10.1080/01614940.2019.1664031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Implemented with the highly efficient concept of Dynamic Kinetic Resolution (DKR), dynamic covalent chemistry can be a useful strategy for the synthesis of enantioenriched compounds. This gives rise to dynamic covalent kinetic resolution (DCKR), a subset of DKR that over the last decades has emerged as increasingly fruitful, with many applications in asymmetric synthesis and catalysis. All DKR protocols are composed of two important parts: substrate racemization and asymmetric transformation, which can lead to yields of >50% with good enantiomeric excesses (ee) of the products. In DCKR systems, by utilizing reversible covalent reactions as the racemization strategy, the substrate enantiomers can be easily interconverted without the presence of any racemase or transition metal catalyst. Enzymes or other chiral catalysts can then be adopted for the resolution step, leading to products with high enantiopurities. This tutorial review focuses on the development of DCKR systems, based on different reversible reactions, and their applications in asymmetric synthesis.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P.R. China
| | - Yang Zhang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Olof Ramström
- Department of Chemistry, University of Massachusetts Lowell, One University Ave., MA, 01854 Lowell, USA
- Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
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31
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Xu J, Li F, Xue Y, Zheng Y. Efficient racemization of N‐phenylacetyl‐D‐glufosinate for L‐glufosinate production. Chirality 2019; 31:513-521. [DOI: 10.1002/chir.23076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/07/2019] [Accepted: 04/09/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Jian‐Miao Xu
- Engineering Research Center of Bioconversion and Biopurification of Ministry of EducationZhejiang University of Technology Hangzhou PR China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou PR China
| | - Fang‐Long Li
- Engineering Research Center of Bioconversion and Biopurification of Ministry of EducationZhejiang University of Technology Hangzhou PR China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou PR China
| | - Ya‐Ping Xue
- Engineering Research Center of Bioconversion and Biopurification of Ministry of EducationZhejiang University of Technology Hangzhou PR China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou PR China
| | - Yu‐Guo Zheng
- Engineering Research Center of Bioconversion and Biopurification of Ministry of EducationZhejiang University of Technology Hangzhou PR China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou PR China
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32
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Oketani R, Hoquante M, Brandel C, Cardinael P, Coquerel G. Resolution of an Atropisomeric Naphthamide by Second-Order Asymmetric Transformation: A Highly Productive Technique. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00133] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryusei Oketani
- Université de Rouen Normandie, UFR des Sciences et Techniques, Laboratoire SMS-EA3233, Place Emile Blondel, 76821 Mont-Saint-Aignan, France
| | - Marine Hoquante
- Université de Rouen Normandie, UFR des Sciences et Techniques, Laboratoire SMS-EA3233, Place Emile Blondel, 76821 Mont-Saint-Aignan, France
| | - Clément Brandel
- Université de Rouen Normandie, UFR des Sciences et Techniques, Laboratoire SMS-EA3233, Place Emile Blondel, 76821 Mont-Saint-Aignan, France
| | - Pascal Cardinael
- Université de Rouen Normandie, UFR des Sciences et Techniques, Laboratoire SMS-EA3233, Place Emile Blondel, 76821 Mont-Saint-Aignan, France
| | - Gérard Coquerel
- Université de Rouen Normandie, UFR des Sciences et Techniques, Laboratoire SMS-EA3233, Place Emile Blondel, 76821 Mont-Saint-Aignan, France
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33
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Hu X, Yin Z, Guo J, Borovkov V, Shan Z. An Efficient Method for Long‐Term Configurational Stabilization of Chiral Tricyclic Dipeptide via Heterocomplexation Approach. ChemistrySelect 2019. [DOI: 10.1002/slct.201900099] [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)
- Xiaoyun Hu
- College of Chemistry and MaterialsSouth-Central University for Nationalities Wuhan China
| | - Zhongyou Yin
- College of Chemistry and MaterialsSouth-Central University for Nationalities Wuhan China
| | - Jianxin Guo
- College of Chemistry and MaterialsSouth-Central University for Nationalities Wuhan China
| | - Victor Borovkov
- College of Chemistry and MaterialsSouth-Central University for Nationalities Wuhan China
| | - Zixing Shan
- College of Chemistry and Molecular SciencesWuhan University Wuhan China
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Ballard A, Narduolo S, Ahmad HO, Cosgrove DA, Leach AG, Buurma NJ. The problem of racemization in drug discovery and tools to predict it. Expert Opin Drug Discov 2019; 14:527-539. [PMID: 30882254 DOI: 10.1080/17460441.2019.1588881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Racemization has long been an ignored risk in drug development, probably because of a lack of convenient access to good tools for its detection and an absence of methods to predict racemization risk. As a result, the potential effects of racemization have been systematically underestimated. Areas covered: Herein, the potential effects of racemization are discussed through a review of drugs for which activity and side effects for both enantiomers are known. Subsequently, drugs known to racemize are discussed and the authors review methods to predict racemization risk. Application of a method quantitatively predicting racemization risk to databases of compounds from the medicinal chemistry literature shows that success in clinical trials is negatively correlated with racemization risk. Expert opinion: It is envisioned that a quantitative method of predicting racemization risk will remove a blind spot from the drug development pipeline. Removal of the blind spot will make drug development more efficient and result in less late-stage attrition of the drug pipeline.
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Affiliation(s)
- Andrew Ballard
- a Physical Organic Chemistry Centre , School of Chemistry, Cardiff University , Cardiff , UK
| | - Stefania Narduolo
- a Physical Organic Chemistry Centre , School of Chemistry, Cardiff University , Cardiff , UK
| | - Hiwa O Ahmad
- a Physical Organic Chemistry Centre , School of Chemistry, Cardiff University , Cardiff , UK.,b Pharmaceutical Chemistry Department , College of Pharmacy, Hawler Medical University , Erbil , Kurdistan Region , Iraq
| | | | - Andrew G Leach
- d School of Pharmacy and Biomolecular Sciences , Liverpool John Moores University , Liverpool , UK
| | - Niklaas J Buurma
- a Physical Organic Chemistry Centre , School of Chemistry, Cardiff University , Cardiff , UK
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35
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Tong H, Liu YF, Yan H, Jiang C, Gao F, Mei Z, Hong K, Yang X, Wang Z. Theoretical investigation of the chiral transition of serine and the roles of water, hydroxyl radical and hydroxide ion. NEW J CHEM 2019. [DOI: 10.1039/c9nj01796h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The serine chiral transition and the roles of water, hydroxyl radical and hydroxide ion as catalysts were theoretically investigated.
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Affiliation(s)
- Hua Tong
- The Department of Physics
- The Institute of Theoretical and Computational Research
- Baicheng Normal University
- Baicheng 137000
- China
| | - Yan Fang Liu
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province
- Huaiyin Institute of Technology
- Huaian 223003
- China
| | - Hongyan Yan
- Department of Computer Science
- Baicheng Normal University
- Baicheng 137000
- China
| | - Chunxu Jiang
- The Department of Physics
- The Institute of Theoretical and Computational Research
- Baicheng Normal University
- Baicheng 137000
- China
| | - Feng Gao
- The Department of Physics
- The Institute of Theoretical and Computational Research
- Baicheng Normal University
- Baicheng 137000
- China
| | - Zemin Mei
- Department of Chemistry
- Baicheng Normal University
- Baicheng 137000
- China
| | - Kun Hong
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province
- Huaiyin Institute of Technology
- Huaian 223003
- China
| | - Xiaocui Yang
- The Department of Physics
- The Institute of Theoretical and Computational Research
- Baicheng Normal University
- Baicheng 137000
- China
| | - Zuocheng Wang
- The Department of Physics
- The Institute of Theoretical and Computational Research
- Baicheng Normal University
- Baicheng 137000
- China
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36
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Langille NF, Horne DB. Discovery and Development of AMG 333: A TRPM8 Antagonist for Migraine. ACS SYMPOSIUM SERIES 2019. [DOI: 10.1021/bk-2019-1332.ch006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Neil F. Langille
- Pivotal Drug Substance Synthetic Technologies, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Daniel B. Horne
- Discovery Research, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
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37
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Xu S, Wang M, Feng B, Han X, Lan Z, Gu H, Li H, Li H. Dynamic kinetic resolution of amines by using palladium nanoparticles confined inside the cages of amine-modified MIL-101 and lipase. J Catal 2018. [DOI: 10.1016/j.jcat.2018.04.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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38
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Enantioconvergent hydrogenations. Nat Catal 2018. [DOI: 10.1038/s41929-018-0073-x] [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]
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39
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40
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Catalytic racemization of secondary alcohols with new (arene)Ru(II)-NHC and (arene)Ru(II)-NHC-tertiary phosphine complexes. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2017.11.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Ballard A, Ahmad HO, Narduolo S, Rosa L, Chand N, Cosgrove DA, Varkonyi P, Asaad N, Tomasi S, Buurma NJ, Leach AG. Quantitative Prediction of Rate Constants for Aqueous Racemization To Avoid Pointless Stereoselective Syntheses. Angew Chem Int Ed Engl 2018; 57:982-985. [PMID: 29072355 PMCID: PMC5820753 DOI: 10.1002/anie.201709163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 11/22/2022]
Abstract
Racemization has a large impact upon the biological properties of molecules but the chemical scope of compounds with known rate constants for racemization in aqueous conditions was hitherto limited. To address this remarkable blind spot, we have measured the kinetics for racemization of 28 compounds using circular dichroism and 1H NMR spectroscopy. We show that rate constants for racemization (measured by ourselves and others) correlate well with deprotonation energies from quantum mechanical (QM) and group contribution calculations. Such calculations thus provide predictions of the second‐order rate constants for general‐base‐catalyzed racemization that are usefully accurate. When applied to recent publications describing the stereoselective synthesis of compounds of purported biological value, the calculations reveal that racemization would be sufficiently fast to render these expensive syntheses pointless.
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Affiliation(s)
- Andrew Ballard
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Hiwa O Ahmad
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK.,Pharmaceutical Chemistry Department, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq
| | - Stefania Narduolo
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Lucy Rosa
- AstraZeneca Pharmaceuticals, Mereside, Alderley Park, Macclesfield, SK10 4TG, UK
| | - Nikki Chand
- AstraZeneca Pharmaceuticals, Mereside, Alderley Park, Macclesfield, SK10 4TG, UK
| | - David A Cosgrove
- AstraZeneca Pharmaceuticals, Mereside, Alderley Park, Macclesfield, SK10 4TG, UK
| | - Peter Varkonyi
- AstraZeneca R+D, Pepparedsleden 1, 43183, Mölndal, Sweden
| | - Nabil Asaad
- AstraZeneca Pharmaceuticals, Mereside, Alderley Park, Macclesfield, SK10 4TG, UK
| | - Simone Tomasi
- AstraZeneca, Charter Way, Silk Road Business Park, Macclesfield, SK10 2NA, UK
| | - Niklaas J Buurma
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Andrew G Leach
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, L3 3AF, UK
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42
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Popłoński J, Reiter T, Kroutil W. Biocatalytic Racemization Employing TeSADH: Substrate Scope and Organic Solvent Compatibility for Dynamic Kinetic Resolution. ChemCatChem 2018. [DOI: 10.1002/cctc.201701395] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jarosław Popłoński
- Department of Chemistry; Wrocław University of Environmental and Life Sciences; C.K. Norwida 25 50-375 Wrocław Poland
| | - Tamara Reiter
- Institute of Chemistry, Organic and Bioorganic Chemistry; University of Graz, NAWI Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Wolfgang Kroutil
- Institute of Chemistry, Organic and Bioorganic Chemistry; University of Graz, NAWI Graz; Heinrichstrasse 28 8010 Graz Austria
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43
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Song B, Chen MW, Zhou YG. Synthesis of chiral sultams with two adjacent stereocenters via palladium-catalyzed dynamic kinetic resolution. Org Chem Front 2018. [DOI: 10.1039/c7qo01098b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A palladium-catalyzed intramolecular asymmetric reductive amination of racemic α-branched ketones bearing the poorly nucleophilic sulfonamides has been successfully developed through dynamic kinetic resolution, providing chiral δ-sultams with two contiguous stereogenic centers.
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Affiliation(s)
- Bo Song
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Mu-Wang Chen
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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44
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Görbe T, Lihammar R, Bäckvall JE. Heterogeneous Acid-Catalyzed Racemization of Tertiary Alcohols. Chemistry 2017; 24:77-80. [DOI: 10.1002/chem.201704691] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Tamás Görbe
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 106 91 Stockholm Sweden
| | - Richard Lihammar
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 106 91 Stockholm Sweden
| | - Jan-E. Bäckvall
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 106 91 Stockholm Sweden
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45
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Ballard A, Ahmad HO, Narduolo S, Rosa L, Chand N, Cosgrove DA, Varkonyi P, Asaad N, Tomasi S, Buurma NJ, Leach AG. Quantitative Prediction of Rate Constants for Aqueous Racemization To Avoid Pointless Stereoselective Syntheses. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrew Ballard
- Physical Organic Chemistry Centre; School of Chemistry; Cardiff University; Main Building, Park Place, Cardiff CF10 3AT UK
| | - Hiwa O. Ahmad
- Physical Organic Chemistry Centre; School of Chemistry; Cardiff University; Main Building, Park Place, Cardiff CF10 3AT UK
- Pharmaceutical Chemistry Department; College of Pharmacy; Hawler Medical University; Erbil Kurdistan Region Iraq
| | - Stefania Narduolo
- Physical Organic Chemistry Centre; School of Chemistry; Cardiff University; Main Building, Park Place, Cardiff CF10 3AT UK
| | - Lucy Rosa
- AstraZeneca Pharmaceuticals, Mereside; Alderley Park Macclesfield SK10 4TG UK
| | - Nikki Chand
- AstraZeneca Pharmaceuticals, Mereside; Alderley Park Macclesfield SK10 4TG UK
| | - David A. Cosgrove
- AstraZeneca Pharmaceuticals, Mereside; Alderley Park Macclesfield SK10 4TG UK
| | | | - Nabil Asaad
- AstraZeneca Pharmaceuticals, Mereside; Alderley Park Macclesfield SK10 4TG UK
| | - Simone Tomasi
- AstraZeneca; Charter Way, Silk Road Business Park Macclesfield SK10 2NA UK
| | - Niklaas J. Buurma
- Physical Organic Chemistry Centre; School of Chemistry; Cardiff University; Main Building, Park Place, Cardiff CF10 3AT UK
| | - Andrew G. Leach
- School of Pharmacy and Biomolecular Sciences; Liverpool John Moores University; Liverpool L3 3AF UK
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46
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Bartlett SL, Johnson JS. Synthesis of Complex Glycolates by Enantioconvergent Addition Reactions. Acc Chem Res 2017; 50:2284-2296. [PMID: 28817258 DOI: 10.1021/acs.accounts.7b00263] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The unique role that stereochemistry plays in molecular recognition events continues to provide a driving force for synthesizing organic compounds in enantioenriched form. The tendency of enantioenriched organic compounds to revert to an entropically favored racemic state in the presence of viable racemization pathways (e.g., the enolization of stereogenic carbonyl derivatives) can sometimes interfere with this objective; however, beginning with Noyori's foundational disclosure of a dynamic kinetic transfer hydrogenation, the ability to channel racemic, configurationally labile starting materials through stereoconvergent reaction pathways has been recognized as a powerful strategy in asymmetric synthesis. Proton transfer, retro-aldol, retro-Michael, reversible redox events, and other processes that can be deleterious to asymmetric synthesis are exploitable in enantioconvergent reactions using chiral small molecules and enzymes as asymmetric catalysts. Enantioselective reduction of configurationally labile carbonyl derivatives bearing a C-H acidic chiral center are particularly common. Because facile racemization is vital to stereocontrol in these transformations, hydrogenations of β-dicarbonyls are commonplace, while less activated substrates have been used less commonly. Our entry into enantioconvergent catalysis evolved from a long-standing interest in the synthesis of complex glycolates and began with the development of a general Noyori-type transfer hydrogenation of α-keto esters. Key innovations in this work include the identification of a new terphenylsulfonamide-Ru(II) complex, which displays unusual preference toward reduction of α-keto esters, and the observation that α-keto esters racemize under mildly basic conditions. This work was extended to the dynamic kinetic hydrogenation of racemic acyl phosphonates. Moreover, the recent recognition that the mechanistic paradigm underlying enantioconvergent hydrogenation chemistry can be extended to diverse carbon-centered nucleophiles has led to advances in the art. Our lab has developed a number of enantioconvergent tertiary alcohol syntheses. In the context of carbon-centered nucleophiles, we have focused on the use of α-keto esters; however, in the latter part of this Account, we will briefly describe our nascent efforts to develop dynamic kinetic additions of carbon-centered nucleophiles to β-oxo acid derivatives. While the enantioconvergent hydrogenation of β-keto acid derivatives is carried out on 100-ton scale annually, non-hydrogenative transformations of these compounds constitute an underexplored subclass of enantioconvergent reactions. With regard to future prospects, a trend toward transformations that afford increasing levels of molecular complexity is apparent. It can be expected that the burgeoning field of asymmetric 1,2-addition chemistry will further drive this chemistry to encompass a wider array of enantioconvergent additions. Additionally, the continued exploration of these chemistries in the context of less conventional electrophiles, as well as identifying novel or overlooked modes of racemization, holds considerable potential.
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Affiliation(s)
- Samuel L. Bartlett
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290 United States
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290 United States
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47
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An efficient stereoselective synthesis of six stereoisomers of 3, 4-diaminocyclohexane carboxamide as key intermediates for the synthesis of factor Xa inhibitors. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Bhardwaj KK, Gupta R. Synthesis of Chirally Pure Enantiomers by Lipase. J Oleo Sci 2017; 66:1073-1084. [DOI: 10.5650/jos.ess17114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Reena Gupta
- Department of Biotechnology, Himachal Pradesh University
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49
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Yang LC, Wang YN, Zhang Y, Zhao Y. Acid-Assisted Ru-Catalyzed Enantioselective Amination of 1,2-Diols through Borrowing Hydrogen. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02959] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Li-Cheng Yang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Republic of Singapore 117543
| | - Ya-Nong Wang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Republic of Singapore 117543
| | - Yao Zhang
- College
of Chemistry, Liaoning University, Shenyang, 110036, People’s Republic of China
| | - Yu Zhao
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Republic of Singapore 117543
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50
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Zhang S, Yu J, Li H, Mao D, Lu G. High-effective approach from amino acid esters to chiral amino alcohols over Cu/ZnO/Al2O3 catalyst and its catalytic reaction mechanism. Sci Rep 2016; 6:33196. [PMID: 27619990 PMCID: PMC5020414 DOI: 10.1038/srep33196] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/23/2016] [Indexed: 11/09/2022] Open
Abstract
Developing the high-efficient and green synthetic method for chiral amino alcohols is an intriguing target. We have developed the Mg(2+)-doped Cu/ZnO/Al2O3 catalyst for hydrogenation of L-phenylalanine methyl ester to chiral L-phenylalaninol without racemization. The effect of different L-phenylalanine esters on this title reaction was studied, verifying that Cu/ZnO/Al2O3 is an excellent catalyst for the hydrogenation of amino acid esters to chiral amino alcohols. DFT calculation was used to study the adsorption of substrate on the catalyst, and showed that the substrate adsorbs on the surface active sites mainly by amino group (-NH2) absorbed on Al2O3, and carbonyl (C=O) and alkoxy (RO-) group oxygen absorbed on the boundary of Cu and Al2O3. This catalytic hydrogenation undergoes the formation of a hemiacetal intermediate and the cleavage of the C-O bond (rate-determining step) by reacting with dissociated H to obtain amino aldehyde and methanol ad-species. The former is further hydrogenated to amino alcohols, and the latter desorbs from the catalyst surface.
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Affiliation(s)
- Shuangshuang Zhang
- Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Jun Yu
- Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Huiying Li
- Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Dongsen Mao
- Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Guanzhong Lu
- Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
- Key Laboratory for Advanced Materials and Research Institute of Industrial catalysis, East China University of Science and Technology, Shanghai 200237, China
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