1
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Duan Y, Guo Z, Zheng T, Lu Y, Xu J, Liu J, Yang F. Iodine-Promoted Reductive Sulfenylation Using Ketones as Hydride Donors. J Org Chem 2024; 89:5851-5856. [PMID: 38587835 DOI: 10.1021/acs.joc.3c02904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Herein, an iodine-promoted reductive sulfenylation reaction of ketones with disulfides has been developed. This method provides an approach for synthesizing unsymmetrical alkyl-alkyl and alkyl-aryl sulfides in a single step. Investigation of the reaction mechanism revealed that ketones play a dual role in this process. They react with disulfides to produce vinyl thioethers and act as effective organic hydride donors, reducing the number of vinyl thioethers that are formed in situ. This study expands the range of applications of ketones in chemical synthesis.
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Affiliation(s)
- Yiping Duan
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, Nanjing 210009, P. R. China
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Zhichao Guo
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tiandong Zheng
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yang Lu
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Liu
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Fulai Yang
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, Nanjing 210009, P. R. China
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2
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Wei J, Du Z, Wang X, Ji C, Li L, You Y. Palladium-catalyzed enantioselective arylation of trichloro- or tri-/difluoroacetaldimine precursors. Chem Commun (Camb) 2024; 60:3303-3306. [PMID: 38426541 DOI: 10.1039/d4cc00022f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A palladium-catalyzed asymmetric α-arylation of N-carbamoyl imine precursors containing CCl3, CF3 and CF2H is presented. This protocol provides facile access to a series of chiral α-aryl trichloroethylamines bearing various functional groups, with moderate to high yields (40-82% yield) and high enantioselectivity (80-99% ee).
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Affiliation(s)
- Jian Wei
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Zhongjian Du
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Xu Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Chenlei Ji
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Longji Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
- Department of Nuclear Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yang'en You
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
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3
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Chen B, Chen Q, Liu Y, Chen J, Zhou X, Wang H, Yan Q, Wang W, Cai Z, Chen FE. Visible-Light-Induced Defluorinative α-C(sp 3)-H Alkylation for the Synthesis of gem-Difluoroallylated α-Trifluoromethylamines. Org Lett 2023; 25:9124-9129. [PMID: 37976410 DOI: 10.1021/acs.orglett.3c03523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Herein, we describe a novel and efficient photoredox catalytic Cα radical addition/defluoroalkylation coupling reaction between α-trifluoromethyl alkenes and N-trifluoroethyl hydroxylamine. A series of gem-difluoroallylated α-trifluoromethylamines were synthesized by the Cα radical addition enabled by a 1,2-H shift of the in situ-generated N-trifluoroethyl radical. Notably, this protocol is distinguished by its mild conditions, easy operation, and excellent functional group tolerability.
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Affiliation(s)
- Bingran Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Qinlin Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Yang Liu
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Jinxiu Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Xi Zhou
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Haifeng Wang
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Qiongjiao Yan
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Wei Wang
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Zeyu Cai
- Hubei Duorui Pharmaceutical Co., Ltd. Wuhan 430205, P. R. China
| | - Fen-Er Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, P. R. China
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4
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Tsai ZN, Li LY, Paculba AS, Miñoza S, Tsao YT, Lin PS, Liao HH. Pro-aromatic Dihydroquinazolinones - From Multigram Synthesis to Reagents for Gram-scale Metallaphotoredox Reactions. Chem Asian J 2023:e202301004. [PMID: 38102804 DOI: 10.1002/asia.202301004] [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: 11/13/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/17/2023]
Abstract
Dihydroquinazolinone (DHQZ) has recently been harnessed as a ketone-derived pro-aromatic reagent extensively employed in (metalla)photoredox reactions as versatile group transfer agents. In this work, we outline a column chromatography-free protocol for the multigram-scale synthesis of pro-aromatic DHQZs as well as its use in a gram-scale nickel/photoredox dual-catalyzed cross-coupling in single-batch, photoflow, and simultaneous multiple smaller batches. While the single-batch approach leveraged moderate yields, a simple plug-flow photoreactor also exhibited amenable productivity (up to 45 % yield) despite the use of a heterogeneous base. Meanwhile, performing the metallaphotoredox-catalyzed reaction in multiple smaller batches in an improvised photoreactor facilitated high yields of up to 59 % and good reproducibility, implying a convenient alternative in the absence of photoflow setups.
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Affiliation(s)
- Zong-Nan Tsai
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Li-Yun Li
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Aira Shayne Paculba
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Shinje Miñoza
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Yong-Ting Tsao
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Pei-Shan Lin
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
| | - Hsuan-Hung Liao
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
- Department of Applied and Medicinal Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan (ROC
- Green Hydrogen Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan (ROC
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5
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Chowdhury D, Mukherjee A. Easy Access to Tertiary Amines from Carbonyl Compounds with Substituted Amine-Boranes: A Substrate, Catalyst, and Additive-Free Approach Under Mild Conditions. Chem Asian J 2023; 18:e202300661. [PMID: 37671911 DOI: 10.1002/asia.202300661] [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: 07/30/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/07/2023]
Abstract
Tertiary amines are ubiquitous and play an essential role in organocatalysis, pharmaceuticals, and fine chemicals. Amongst various synthetic procedures known for their synthesis, the reductive amination of carbonyl compounds has been found to be a proficient method. Over the past few decades, different synthetic strategies for reductive amination have been developed. Most of them suffer from the use of transition metals and/or harsh reaction conditions. Herein, we present an efficient, operationally simple protocol for the chemoselective transformation of carbonyl compounds to tertiary amines under benign conditions. The strategy encompasses a broad substrate scope under the metal-free condition at room temperature and does not require any solvent. A detailed mechanistic investigation was performed with the aid of control experiments and computational study to shed light on the reaction pathway.
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Affiliation(s)
- Deep Chowdhury
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India
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6
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Matsubara R, Harada T, Xie W, Yabuta T, Xu J, Hayashi M. Sensitizer-Free Photochemical Regeneration of Benzimidazoline Organohydride. J Org Chem 2023; 88:12276-12288. [PMID: 37590088 DOI: 10.1021/acs.joc.3c00898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Organohydrides are an important class of organic compounds that can provide hydride anions for chemical and biochemical reactions, as demonstrated by reduced nicotinamide adenine dinucleotides serving as important natural redox cofactors. The coupling of hydride transfer from the organohydride to the substrate and subsequent regeneration of the organohydride from its oxidized form can realize organohydride-catalyzed reduction reactions. Depending on the structure of the organohydride, its hydridicity and ease of regeneration vary. Benzimidazoline (BIH) is one of the strongest synthetic C-H hydride donors; however, its reductive regeneration requires highly reducing conditions. In this study, we synthesized various oxidized and reduced forms of BIH derivatives with aryl groups at the 2-position and investigated their photophysical and electrochemical properties. 4-(Dimethylamino)phenyl-substituted BIH exhibited salient red-shifted absorption compared with other synthesized BIH derivatives, and visible-light-driven regeneration without using an external photosensitizer was achieved. This knowledge has significant implications for the future development of solar-energy-based catalytic photoreduction technologies that utilize organohydride regeneration strategies.
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Affiliation(s)
- Ryosuke Matsubara
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Tatsuhiro Harada
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Weibin Xie
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Tatsushi Yabuta
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Jiasheng Xu
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Masahiko Hayashi
- Department of Chemistry, Kobe University, Nada-ku, Kobe, Hyogo 657-8501, Japan
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7
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Wang YZ, Hu L, Bai ST, Zhang X. Ru-Catalyzed Asymmetric Reductive Amination of Aryl-Trifluoromethyl Ketones for Synthesis of Primary α-(Trifluoromethyl)arylmethylamines. Org Lett 2023. [PMID: 37393577 DOI: 10.1021/acs.orglett.3c01734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The ruthenium-catalyzed asymmetric reductive amination of aryl-trifluoromethyl ketones affording high value primary α-(trifluoromethyl)arylmethylamines using cheap NH4OAc as the nitrogen source and H2 as the reductant is reported. This user-friendly and simple catalytic method tolerates various aromatic functions with electron-withdrawing or -donating substituents at the para- or meta-positions and as well challenging heteroaromatic functions, yielding primary α-(trifluoromethyl)arylmethylamines with excellent chemoselectivities, enantioselectivities, and useful yields (80-97% ee, 51-92% isolated yields). Finally, scalable and concise synthesis of key drug intermediates using this methodology is presented.
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Affiliation(s)
- Yuan-Zheng Wang
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
| | - Le'an Hu
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
| | - Shao-Tao Bai
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
- Institute of Carbon-Neutral Technology and Center for Carbon-Neutrality Catalysis and Engineering, Shenzhen Polytechnic, No. 7098 Liuxian Avenue, Nanshan District, Shenzhen 518055, China
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
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8
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Wu Z, He H, Chen M, Zhu L, Zheng W, Cao Y, Antilla JC. Asymmetric Reductive Amination with Pinacolborane Catalyzed by Chiral SPINOL Borophosphates. Org Lett 2022; 24:9436-9441. [PMID: 36519791 DOI: 10.1021/acs.orglett.2c03866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The catalytic asymmetric reductive amination of ketones with pinacolborane employing chiral SPINOL-derived borophosphates as catalysts has been realized. A series of chiral amine derivatives bearing multiple functional groups were obtained in good to excellent yields and enantioselectivities (up to 97% yield, 98% ee) under mild reaction conditions. Moreover, the synthetic applicability of the established method has been demonstrated by the asymmetric synthesis of (R)-Fendiline.
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Affiliation(s)
- Zhenwei Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Hualing He
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Minglei Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Linfei Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Weitao Zheng
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Yang Cao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, Jiangsu222005, P. R. China
| | - Jon C Antilla
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
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9
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Fang Z, Gong Y, Liu B, Zhang J, Han X, Liu Z, Ning Y. Rh-Catalyzed Coupling Reactions of Fluoroalkyl N-Sulfonylhydrazones with Azides Leading to α-Trifluoroethylated Imines. Org Lett 2022; 24:8920-8924. [DOI: 10.1021/acs.orglett.2c03773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhongxue Fang
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu 224007, People’s Republic of China
| | - Yanmei Gong
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu 224007, People’s Republic of China
| | - Binbin Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Jin Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Xinyue Han
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Zhaohong Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design and Synthesis, Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, China
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10
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Zhu ZH, Ding YX, Zhou YG. Transfer-catalyst-free biomimetic asymmetric reduction of 3-sulfonyl coumarins with a regenerable NAD(P)H model. Chem Commun (Camb) 2022; 58:3973-3976. [PMID: 35254349 DOI: 10.1039/d1cc06896b] [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
A novel transfer-catalyst-free biomimetic reduction of the tetrasubstituted olefins 3-sulfonyl coumarins with the chiral and regenerable [2.2]paracyclophane-based NAD(P)H model CYNAM has been developed, affording chiral 3-sulfonyl dihydrocoumarins with excellent enantioselectivities.
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Affiliation(s)
- Zhou-Hao Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yi-Xuan Ding
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, 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.,Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China.
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11
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Luo Z, Wan S, Pan Y, Yao Z, Zhang X, Li B, Li J, Xu L, Fan Q. Metal‐Free Reductive Amination of Ketones with Amines Using Formic Acid as the Reductant under BF
3
⋅ Et
2
O Catalysis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhenli Luo
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Shanhong Wan
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Yixiao Pan
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Zhen Yao
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Xin Zhang
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Bohan Li
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Jiajie Li
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Lijin Xu
- Department of Chemistry Renmin University of China Beijing 100872 P. R. China
| | - Qing‐Hua Fan
- Institute of Chemistry Chinese Academy of Sciences and University of Chinese Academy of Sciences Beijing 100190 P. R. China
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12
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Shen GB, Qian BC, Zhang GS, Luo GZ, Fu YH, Zhu XQ. Thermodynamics regulated organic hydride/acid pairs as novel organic hydrogen reductants. Org Chem Front 2022. [DOI: 10.1039/d2qo01605b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Organic hydride/acid pairs could realize transformation of N-substituted organic hydrides from hydride reductants to thermodynamics regulated hydrogen reductants on conveniently choosing suitable organic hydrides and acids with various acidities.
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Affiliation(s)
- Guang-Bin Shen
- School of Medical Engineering, Jining Medical University, Jining, Shandong, 272000, P. R. China
| | - Bao-Chen Qian
- School of Medical Engineering, Jining Medical University, Jining, Shandong, 272000, P. R. China
| | - Gao-Shuai Zhang
- School of Medical Engineering, Jining Medical University, Jining, Shandong, 272000, P. R. China
| | - Guang-Ze Luo
- School of Medical Engineering, Jining Medical University, Jining, Shandong, 272000, P. R. China
| | - Yan-Hua Fu
- College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan, 455000, China
| | - Xiao-Qing Zhu
- The State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
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13
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He XK, Lu J, Ye HB, Li L, Xuan J. Direct Photoexcitation of Benzothiazolines: Acyl Radical Generation and Application to Access Heterocycles. Molecules 2021; 26:6843. [PMID: 34833936 PMCID: PMC8624417 DOI: 10.3390/molecules26226843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 11/28/2022] Open
Abstract
An acyl radical generation and functionalization strategy through direct photoexcitation of benzothiazolines has been developed. The formed acyl radical species can either be trapped by quinoxalin-2-ones to realize their C(3)-H functionalization or trigger a cascade radical cyclization with isonitriles to synthesise biologically important phenanthridines. The synthetic value of this protocol can be further illustrated by the modification of quinoxalin-2-ones, containing important natural products and drug-based complex molecules.
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Affiliation(s)
- Xiang-Kui He
- Anhui Province Key Laboratory of Chemistry for Inorganic, Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China; (X.-K.H.); (J.L.); (H.-B.Y.); (L.L.)
| | - Juan Lu
- Anhui Province Key Laboratory of Chemistry for Inorganic, Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China; (X.-K.H.); (J.L.); (H.-B.Y.); (L.L.)
| | - Hai-Bing Ye
- Anhui Province Key Laboratory of Chemistry for Inorganic, Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China; (X.-K.H.); (J.L.); (H.-B.Y.); (L.L.)
| | - Lei Li
- Anhui Province Key Laboratory of Chemistry for Inorganic, Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China; (X.-K.H.); (J.L.); (H.-B.Y.); (L.L.)
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic, Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China; (X.-K.H.); (J.L.); (H.-B.Y.); (L.L.)
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Hefei 230601, China
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14
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Costantini M, Mendoza A. Modular Enantioselective Synthesis of cis-Cyclopropanes through Self-Sensitized Stereoselective Photodecarboxylation with Benzothiazolines. ACS Catal 2021; 11:13312-13319. [PMID: 34765283 PMCID: PMC8576787 DOI: 10.1021/acscatal.1c03949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/12/2021] [Indexed: 12/20/2022]
Abstract
Chiral cis-cyclopropanes are strained rigid analogues of alkyl chains, whose study and application are limited by their difficult synthesis. A modular approach from olefin materials is enabled by the discovery of the electron donor-acceptor (EDA) interaction between 2-substituted benzothiazolines and N-hydroxyphthalimide esters. These complexes are activated by visible light without photocatalysts, and the benzothiazoline reagent plays a triple role as a photoreductant, a stereoselective hydrogen-atom donor, and a Brønsted acid. Beyond the enantioselective synthesis of cis-cyclopropanes, these results introduce benzothiazolines as accessible and easily tunable self-sensitized photoreductants.
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Affiliation(s)
- Matteo Costantini
- Department of Organic Chemistry, Arrhenius
Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | - Abraham Mendoza
- Department of Organic Chemistry, Arrhenius
Laboratory, Stockholm University, 106 91 Stockholm, Sweden
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15
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Chen W, Tan C, Wang H, Ye X. The Development of Organocatalytic Asymmetric Reduction of Carbonyls and Imines Using Silicon Hydrides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenchao Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
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16
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Wang Z, Yang C, Chen J, Yang F, Khan R, Yang Y, Qiao X, Su Z, Fan B. Asymmetric Transfer Hydrogenation of Trifluoromethylated Imines to Chiral
α
‐Trifluoromethylated Amines With Alcohol as The Hydrogen Source. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zheting Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
| | - Chunhui Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
| | - Fan Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
| | - Ruhima Khan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
| | - Yong Yang
- Chongqing Key Laboratory of traditional Chinese medicine health Chongqing Academy of Chinese Materia Medica Chongqing P. R. China
| | - Xingfang Qiao
- Chongqing Key Laboratory of traditional Chinese medicine health Chongqing Academy of Chinese Materia Medica Chongqing P. R. China
| | - Zhimin Su
- Chongqing Key Laboratory of traditional Chinese medicine health Chongqing Academy of Chinese Materia Medica Chongqing P. R. China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources Yunnan Minzu University Yuehua Street Kunming 650500 P. R. China
- Chongqing Key Laboratory of traditional Chinese medicine health Chongqing Academy of Chinese Materia Medica Chongqing P. R. China
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17
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Zhang Z, Zhang ZH, Zhou F, Zhou J. Catalytic Enantioselective Transfer Hydrogenation-Carboxylative Cyclization to 4-Fluoroalkyl 2-Oxazolidinone with CO 2 as the C1 Synthon. Org Lett 2021; 23:2726-2730. [PMID: 33760616 DOI: 10.1021/acs.orglett.1c00632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a sequential catalytic asymmetric transfer hydrogenation-carboxylative cyclization for the facile construction of chiral 4-fluoroalkyl 2-oxazolidinones with high enantioselectivity. The resulting 2-oxazolidinones can be easily elaborated to synthetic useful chiral β-fluoroalkyl β-amino alcohols. This research also represents a rare example of catalytic asymmetric sequential reactions using CO2 as a C1 synthon as well as carboxylative cyclization of α-fluoroalkyl propargylamines.
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Affiliation(s)
| | | | | | - Jian Zhou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
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18
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He H, Tang X, Cao Y, Antilla JC. Catalytic Asymmetric Reduction of α-Trifluoromethylated Imines with Catecholborane by BINOL-Derived Boro-phosphates. J Org Chem 2021; 86:4336-4345. [PMID: 33586987 DOI: 10.1021/acs.joc.0c03009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A catalytic enantioselective reduction of α-trifluoromethylated imines by a BINOL-derived boro-phosphate employing catecholborane as hydride source has been developed. This method provides an efficient route to prepare synthetically useful chiral α-trifluoromethylated amines in high yields and with excellent enantioselectivities (up to 98% yield and 96% ee) under mild conditions.
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Affiliation(s)
- Hualing He
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xiaoxue Tang
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Yang Cao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang 222005, People's Republic of China
| | - Jon C Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, People's Republic of China
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19
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Onyeagusi CI, Malcolmson SJ. Strategies for the Catalytic Enantioselective Synthesis of α-Trifluoromethyl Amines. ACS Catal 2020; 10:12507-12536. [PMID: 34306806 PMCID: PMC8302206 DOI: 10.1021/acscatal.0c03569] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The exploitation of the α-trifluoromethylamino group as an amide surrogate in peptidomimetics and drug candidates has been on the rise. In a large number of these cases, this moiety bears stereochemistry with the stereochemical identity having important consequences on numerous molecular properties, such as the potency of the compound. Yet, the majority of stereoselective syntheses of α-CF3 amines rely on diastereoselective couplings with chiral reagents. Concurrent with the rapid expansion of fluorine into pharmaceuticals has been the development of catalytic enantioselective means of preparing α-trifluoromethyl amines. In this work, we outline the strategies that have been employed for accessing these enantioenriched amines, including normal polarity approaches and several recent developments in imine umpolung transformations.
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Affiliation(s)
- Chibueze I Onyeagusi
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Steven J Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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20
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Shen GB, Fu YH, Zhu XQ. Thermodynamic Network Cards of Hantzsch Ester, Benzothiazoline, and Dihydrophenanthridine Releasing Two Hydrogen Atoms or Ions on 20 Elementary Steps. J Org Chem 2020; 85:12535-12543. [PMID: 32880175 DOI: 10.1021/acs.joc.0c01726] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, thermodynamic driving forces on 20 possible elementary steps of Hantzsch ester (HEH2), benzothiazoline (BTH2), and dihydrophenanthridine (PDH2) releasing two hydrogen atoms or ions were measured or derived from the related thermodynamic data using Hess' law in acetonitrile. Furthermore, thermodynamic network cards of HEH2, BTH2, and PDH2 releasing two hydrogen atoms or ions on 20 elementary steps were first established. Based on the thermodynamic network cards, hydride-donating, hydrogen-atom-donating, and electron-donating abilities of XH2 and XH-, and two hydrogen-atom(ion)-donating abilities of XH2 are discussed in detail. Obviously, the thermodynamic network cards of HEH2, BTH2, and PDH2 not only offer rational data guidance for organic synthetic chemists to properly choose an appropriate reducer among the three reducing agents to hydrogenate various unsaturated compounds but also strongly promote elucidatation of the detailed hydrogenation mechanisms.
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Affiliation(s)
- Guang-Bin Shen
- College of Chemistry, Nankai University, Tianjin 300071, China.,School of Medical Engineering, Jining Medical University, Jining, Shandong 272000, China
| | - Yan-Hua Fu
- College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, China
| | - Xiao-Qing Zhu
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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21
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Zhu ZH, Ding YX, Wu B, Zhou YG. Design and synthesis of chiral and regenerable [2.2]paracyclophane-based NAD(P)H models and application in biomimetic reduction of flavonoids. Chem Sci 2020; 11:10220-10224. [PMID: 34094287 PMCID: PMC8162316 DOI: 10.1039/d0sc04188b] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/07/2020] [Indexed: 01/23/2023] Open
Abstract
With the rapid development of biomimetic asymmetric reduction, the demand for efficient chiral and regenerable NAD(P)H models is growing rapidly. Herein, a new class of [2.2]paracyclophane-based chiral and regenerable NAD(P)H models (CYNAMs) was designed and synthesized. The first enantioselective biomimetic reduction of tetrasubstituted alkene flavonoids has been successfully realized through enzyme-like cooperative bifunctional activation, giving chiral flavanones with up to 99% yield and 99% ee.
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Affiliation(s)
- Zhou-Hao Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yi-Xuan Ding
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Bo Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
- Zhang Dayu School of Chemistry, Dalian University of Technology Dalian 116024 China
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22
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Cao Y, Zhang S, Antilla JC. Catalytic Asymmetric 1,4-Reduction of α-Branched 2-Vinyl-azaarenes by a Chiral SPINOL-Derived Borophosphate. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02563] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Cao
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Shouqi Zhang
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jon C. Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
- School of Sciences, Zhejiang Sci-Tech University, Hangzhou City, Zhejiang Province 310018, P. R. China
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23
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Uchikura T, Suzuki R, Suda Y, Akiyama T. Enantioselective Synthesis of 2‐Substituted Indoles Bearing Trifluoromethyl Moiety by the Friedel‐Crafts Alkylation Reaction of 4,7‐Dihydroindole with
N
−H Trifluoromethyl Ketimines. ChemCatChem 2020. [DOI: 10.1002/cctc.202000920] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tatsuhiro Uchikura
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Riku Suzuki
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Yusuke Suda
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Takahiko Akiyama
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
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24
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Na F, Lopez SS, Beauseigneur A, Hernandez LW, Sun Z, Antilla JC. Catalytic Asymmetric Transfer Hydrogenation of trans-Chalcone Derivatives Using BINOL-derived Boro-phosphates. Org Lett 2020; 22:5953-5957. [PMID: 32692927 DOI: 10.1021/acs.orglett.0c02042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chiral phosphoric-acid-catalyzed asymmetric reductions of trans-chalcones have been investigated in this work. A BINOL-derived boro-phosphate-catalyzed asymmetric transfer hydrogenation of the carbon-carbon double bond of trans-chalcone derivatives employing borane as a hydride source was realized. This methodology provides a convenient procedure to access chiral dihydrochalone derivatives in high yields and with high enantioselectivities under mild conditions.
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Affiliation(s)
- Fei Na
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Susana S Lopez
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Alice Beauseigneur
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Lucas W Hernandez
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Zhuoxin Sun
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Jon C Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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25
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Chen X, Yan L, Zhang L, Zhao C, Feng G, Chen L, Sun S, Liu Q, Liu L. Aerobic redox deracemization of α-aryl glycine esters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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26
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Zhang L, Zhu R, Feng A, Zhao C, Chen L, Feng G, Liu L. Redox deracemization of β,γ-alkynyl α-amino esters. Chem Sci 2020; 11:4444-4449. [PMID: 34122901 PMCID: PMC8159540 DOI: 10.1039/d0sc00944j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The first non-enzymatic redox deracemization method using molecular oxygen as the terminal oxidant has been described. The one-pot deracemization of β,γ-alkynyl α-amino esters consisted of a copper-catalyzed aerobic oxidation and chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation with excellent functional group compatibility. By using benzothiazoline as the reducing reagent, an exclusive chemoselectivity at the C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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N bond over the C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C bond was achieved, allowing for efficient deracemization of a series of α-amino esters bearing diverse α-alkynyl substituent patterns. The origins of chemo- and enantio-selectivities were elucidated by experimental and computational mechanistic investigation. The generality of the strategy is further demonstrated by efficient deracemization of β,γ-alkenyl α-amino esters. A one-pot deracemization of β,γ-alkynyl α-amino esters consisting of an aerobic oxidation and chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation has been described.![]()
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Affiliation(s)
- Lu Zhang
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Aili Feng
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Changyin Zhao
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
| | - Lei Chen
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Guidong Feng
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China
| | - Lei Liu
- School of Pharmaceutical Sciences, Shandong University Jinan 250012 China .,School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 China
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27
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Saito K, Miyashita H, Ito Y, Yamanaka M, Akiyama T. Oxidative Kinetic Resolution of Acyclic Amines Based on Equilibrium Control. Org Lett 2020; 22:3128-3134. [DOI: 10.1021/acs.orglett.0c00887] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kodai Saito
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Hiromitsu Miyashita
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yui Ito
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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28
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Shen C, Wang RQ, Wei L, Wang ZF, Tao HY, Wang CJ. Catalytic Asymmetric Umpolung Allylation/2-Aza-Cope Rearrangement for the Construction of α-Tetrasubstituted α-Trifluoromethyl Homoallylic Amines. Org Lett 2019; 21:6940-6945. [DOI: 10.1021/acs.orglett.9b02543] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Ruo-Qing Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Liang Wei
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zuo-Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hai-Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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29
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Chen MW, Yang Q, Deng Z, Ding Q, Peng Y. Synthesis of Chiral β-Fluoroalkyl β-Amino Acid Derivatives via Palladium-Catalyzed Hydrogenation. J Org Chem 2019; 84:10371-10379. [PMID: 31318545 DOI: 10.1021/acs.joc.9b01523] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An enantioselective palladium-catalyzed hydrogenation of β-fluoroalkyl β-amino acrylic acid derivatives has been successfully developed, providing the corresponding chiral β-fluoroalkyl β-amino acid derivatives in good yields with excellent enantioselectivities. In addition, chiral γ-fluoroalkyl γ-amino alcohol could be synthesized by a simple reduction of the corresponding hydrogenated product. The mechanism of the reaction was explored by deuterium-labeling experiments.
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Affiliation(s)
- Mu-Wang Chen
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi's Key Laboratory of Green Chemistry and College of Chemistry & Chemical Engineering , Jiangxi Normal University , Nanchang , Jiangxi 330022 , China.,State Key Laboratory of Fine Chemicals , Dalian University of Technology , Dalian 116024 , China
| | - Qin Yang
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi's Key Laboratory of Green Chemistry and College of Chemistry & Chemical Engineering , Jiangxi Normal University , Nanchang , Jiangxi 330022 , China
| | - Zhihong Deng
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi's Key Laboratory of Green Chemistry and College of Chemistry & Chemical Engineering , Jiangxi Normal University , Nanchang , Jiangxi 330022 , China
| | - Qiuping Ding
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi's Key Laboratory of Green Chemistry and College of Chemistry & Chemical Engineering , Jiangxi Normal University , Nanchang , Jiangxi 330022 , China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi's Key Laboratory of Green Chemistry and College of Chemistry & Chemical Engineering , Jiangxi Normal University , Nanchang , Jiangxi 330022 , China
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30
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Wang X, Huang D, Wang K, Liu J, Zong W, Wang J, Su Y, Hu Y. Tin powder promoted synthesis of trifluoroethylamine‐containing 3,3′‐disubstituted oxindoles. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaoping Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Ke‐Hu Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Jiaxin Liu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Wuzhong Zong
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Juanjuan Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
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31
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Xi X, Li Y, Wang G, Xu G, Shang L, Zhang Y, Xia L. Iridium-catalyzed diastereoselective amination of alcohols with chiral tert-butanesulfinamide by the use of a borrowing hydrogen methodology. Org Biomol Chem 2019; 17:7651-7654. [PMID: 31353383 DOI: 10.1039/c9ob01417a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iridium-catalyzed diastereoselective amination of alcohols with chiral tert-butanesulfinamide was developed under basic conditions, affording the optically active secondary sulfinamides in high yields and diastereoselectivities. The removal of the sulfinyl group from sulfonamides allowed a facile access to a wide range of α-chiral primary amines. This synthetic strategy was further applied in the synthesis of the marketed pharmaceuticals (S)-rivastigmine and NPS R-568.
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Affiliation(s)
- Xiaomei Xi
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Yongjie Li
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Guannan Wang
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Guangda Xu
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Lina Shang
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Yao Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Lixin Xia
- College of Chemistry, Liaoning University, Shenyang 110036, China.
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32
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Li L, Guo S, Wang Q, Zhu J. Acyl Radicals from Benzothiazolines: Synthons for Alkylation, Alkenylation, and Alkynylation Reactions. Org Lett 2019; 21:5462-5466. [DOI: 10.1021/acs.orglett.9b01717] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Lei Li
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210023, China
| | - Shan Guo
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210023, China
| | - Qi Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210023, China
| | - Jin Zhu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210023, China
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33
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Shi LM, Sun XS, Shen C, Wang ZF, Tao HY, Wang CJ. Catalytic Asymmetric Synthesis of α-Trifluoromethyl Homoallylic Amines via Umpolung Allylation/2-Aza-Cope Rearrangement: Stereoselectivity and Mechanistic Insight. Org Lett 2019; 21:4842-4848. [DOI: 10.1021/acs.orglett.9b01738] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Li-Min Shi
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xi-Shang Sun
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zuo-Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hai-Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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34
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Takata T, Hirano K, Miura M. Synthesis of α-Trifluoromethylamines by Cu-Catalyzed Regio- and Enantioselective Hydroamination of 1-Trifluoromethylalkenes. Org Lett 2019; 21:4284-4288. [DOI: 10.1021/acs.orglett.9b01471] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tatsuaki Takata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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35
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Skrypai V, Varjosaari SE, Azam F, Gilbert TM, Adler MJ. Chiral Brønsted Acid-Catalyzed Metal-Free Asymmetric Direct Reductive Amination Using 1-Hydrosilatrane. J Org Chem 2019; 84:5021-5026. [PMID: 30973732 DOI: 10.1021/acs.joc.8b03073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The asymmetric direct reductive amination of prochiral ketones with aryl amines using 1-hydrosilatrane with a chiral Brønsted acid catalyst is reported. This is the first known example of chiral Brønsted acid-catalyzed asymmetric reductive amination using a silane as the hydride source. The reaction features a highly practical reducing reagent and proceeds efficiently at room temperature without a specialized reaction setup or equipment to exclude air or moisture. This method provides high conversion and enantiomeric excess up to 84% of the desired chiral secondary amines with minimal side products.
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Affiliation(s)
- Vladislav Skrypai
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States
| | - Sami E Varjosaari
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States.,Department of Science & Mathematics , Coker College , 300 E. College Ave. , Hartsville , South Carolina 29550 , United States
| | - Fawwaz Azam
- Department of Chemistry & Biology , Ryerson University , 350 Victoria St. , Toronto , Ontario M5B 2K3 , Canada
| | - Thomas M Gilbert
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States
| | - Marc J Adler
- Department of Chemistry & Biochemistry , Northern Illinois University , 1425 W. Lincoln Hwy. , DeKalb , Illinois 60115 , United States.,Department of Chemistry & Biology , Ryerson University , 350 Victoria St. , Toronto , Ontario M5B 2K3 , Canada
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36
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Miyagawa M, Yoshida M, Kiyota Y, Akiyama T. Enantioselective Friedel–Crafts Alkylation Reaction of Heteroarenes with N‐Unprotected Trifluoromethyl Ketimines by Means of Chiral Phosphoric Acid. Chemistry 2019; 25:5677-5681. [DOI: 10.1002/chem.201901020] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Indexed: 02/04/2023]
Affiliation(s)
- Masamichi Miyagawa
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Masaru Yoshida
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Yuki Kiyota
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Takahiko Akiyama
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
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37
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Wang J, Zhu Z, Chen M, Chen Q, Zhou Y. Catalytic Biomimetic Asymmetric Reduction of Alkenes and Imines Enabled by Chiral and Regenerable NAD(P)H Models. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Wang
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing China
| | - Zhou‐Hao Zhu
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Mu‐Wang Chen
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qing‐An Chen
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yong‐Gui Zhou
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- State Key Laboratory of Fine ChemicalsZhang Dayu School of ChemistryDalian University of Technology Dalian China
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38
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Wang J, Zhu ZH, Chen MW, Chen QA, Zhou YG. Catalytic Biomimetic Asymmetric Reduction of Alkenes and Imines Enabled by Chiral and Regenerable NAD(P)H Models. Angew Chem Int Ed Engl 2019; 58:1813-1817. [PMID: 30556234 DOI: 10.1002/anie.201813400] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Indexed: 11/10/2022]
Abstract
The development of biomimetic chemistry based on the NAD(P)H with hydrogen gas as terminal reductant is a long-standing challenge. Through rational design of the chiral and regenerable NAD(P)H analogues based on planar-chiral ferrocene, a biomimetic asymmetric reduction has been realized using bench-stable Lewis acids as transfer catalysts. A broad set of alkenes and imines could be reduced with up to 98 % yield and 98 % ee, likely enabled by enzyme-like cooperative bifunctional activation. This reaction represents the first general biomimetic asymmetric reduction (BMAR) process enabled by chiral and regenerable NAD(P)H analogues. This concept demonstrates catalytic utility of a chiral coenzyme NAD(P)H in asymmetric catalysis.
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Affiliation(s)
- Jie Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhou-Hao Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Mu-Wang Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qing-An Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.,State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, China
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39
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You Y, Luo S. Catalytic Asymmetric Mannich Type Reaction with Tri-/Difluoro- or Trichloroacetaldimine Precursors. Org Lett 2018; 20:7137-7140. [PMID: 30407021 DOI: 10.1021/acs.orglett.8b03083] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient catalytic asymmetric Mannich type reaction of CF3-, CF2H-, or CCl3-acetaldimine precursors by a chiral primary amine is presented. This protocol provides facile access to chiral CF3-, CF2H-, or trichloroethyl amines in excellent yields and high enantioselectivity (up to 99% yield, up to >99% ee).
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Affiliation(s)
- Yang'en You
- Key Laboratory of Molecular Recognition and Function , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100490 , China
| | - Sanzhong Luo
- Key Laboratory of Molecular Recognition and Function , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100490 , China.,Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100875 , China
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40
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Kayet A, Ajarul S, Paul S, Maiti DK. 5-Annulation of Ketoimines: TFA-Catalyzed Construction of Isoindolinone-3-carboxylates and Development of Photophysical Properties. J Org Chem 2018; 83:8401-8409. [PMID: 29979590 DOI: 10.1021/acs.joc.8b01049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Herein we have demonstrated the first report on 5-annulation of ketoimines to valuable isoindolinone-3-carboxylates. Instead of commonly used aldimine substrates, relatively less reactive ketoimines are employed for developing a TFA catalyzed organoreductive cyclization to furnish a variety of isoindolinones in excellent yield and reaction rate under mild reaction conditions. This is a metal-free event, which proceeds through a one pot ketoimine formation, hydride transfer from an organic reductant 2-(naphthalen-2-yl)-2,3-dihydrobenzo[ d]thiazole, and followed by five member cyclization sequences through TFA-activation of imine and ester groups. Studies on ESI-MS kinetics, leaving group aptitude, and control experiments led us to propose the mechanistic pathway of the new ketoimine-lactamization reaction. We have shown the synthetic utility of the emerging synthons through easy transformation of isoindolinones to different synthetic analogues. We investigated photophysical properties of the small molecules for their futuristic application as a pharmaceutical and materials, and the heterocycles displayed brilliant fluorescence activity.
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Affiliation(s)
- Anirban Kayet
- Department of Chemistry , University of Calcutta , University College of Science, 92, A. P. C. Road , Kolkata 700009 , India
| | - Sk Ajarul
- Department of Chemistry , University of Calcutta , University College of Science, 92, A. P. C. Road , Kolkata 700009 , India
| | - Sima Paul
- Department of Chemistry , University of Calcutta , University College of Science, 92, A. P. C. Road , Kolkata 700009 , India
| | - Dilip K Maiti
- Department of Chemistry , University of Calcutta , University College of Science, 92, A. P. C. Road , Kolkata 700009 , India
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41
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Min X, Liu J. An Approach to P=N Bond Formation: Straightforward Synthesis of Arylurea-Derived Phosphazenes via Condensation of Ph3
P=O with N
-Monosubstituted Arylureas. ChemistrySelect 2018. [DOI: 10.1002/slct.201801469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiangting Min
- School of Petroleum and Chemical Engineering; Dalian University of Technology, Panjin Campus; Panjin, Liaoning Province 124221 P. R. China
| | - Jianhui Liu
- School of Petroleum and Chemical Engineering; Dalian University of Technology, Panjin Campus; Panjin, Liaoning Province 124221 P. R. China
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian, Liaoning Province 116024 P. R. China
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42
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Chen MW, Yang Q, Deng Z, Zhou Y, Ding Q, Peng Y. Organocatalytic Asymmetric Reduction of Fluorinated Alkynyl Ketimines. J Org Chem 2018; 83:8688-8694. [DOI: 10.1021/acs.joc.8b00873] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mu-Wang Chen
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Qin Yang
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Zhihong Deng
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Yirong Zhou
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Qiuping Ding
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule, Ministry of Education and College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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43
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Zhang Y, Nie J, Zhang FG, Ma JA. Zinc-mediated enantioselective addition of terminal 3-en-1-ynes to cyclic trifluoromethyl ketimines. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Chen J, Huang W, Li Y, Cheng X. Visible-Light-Induced Difluoropropargylation Reaction with Benzothiazoline as a Reductant. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800066] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jingzhi Chen
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education; Nanjing University; Nanjing 210023 People's Republic of China
| | - Wenhao Huang
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education; Nanjing University; Nanjing 210023 People's Republic of China
| | - Ying Li
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education; Nanjing University; Nanjing 210023 People's Republic of China
| | - Xu Cheng
- Institute of Chemistry and Biomedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education; Nanjing University; Nanjing 210023 People's Republic of China
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy; Nanjing University of Chinese Medicine; Nanjing People's Republic of China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin People's Republic of China
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45
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Chen H, Ye JL, Huang PQ. Chemoselective direct reductive trifluoromethylation of amides: a flexible access to functionalized α-trifluoromethylamines. Org Chem Front 2018. [DOI: 10.1039/c7qo01031a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-pot method is reported for the direct transformation of secondary amides to α-trifluoromethylamines.
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Affiliation(s)
- Hang Chen
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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46
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Park DY, Kim KH, Cheon CH. Enantioselective Synthesis of β-Aminotetralins via Chiral Phosphoric Acid-catalyzed Reductive Amination of β-Tetralones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701198] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Do Young Park
- Department of Chemistry; Korea University; 145 Anam-ro Seongbuk-gu, Seoul 02841 Republic of Korea
| | - Kyung-Hee Kim
- Department of Chemistry; Korea University; 145 Anam-ro Seongbuk-gu, Seoul 02841 Republic of Korea
| | - Cheol-Hong Cheon
- Department of Chemistry; Korea University; 145 Anam-ro Seongbuk-gu, Seoul 02841 Republic of Korea
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47
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Bräuer TM, Zhang Q, Tiefenbacher K. Iminium Catalysis inside a Self-Assembled Supramolecular Capsule: Scope and Mechanistic Studies. J Am Chem Soc 2017; 139:17500-17507. [PMID: 29090917 DOI: 10.1021/jacs.7b08976] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although iminium catalysis has become an important tool in organic chemistry, its combination with supramolecular host systems has remained largely unexplored. We report the detailed investigations into the first example of iminium catalysis inside a supramolecular host. In the case of 1,4-reductions of α,β-unsaturated aldehydes, catalytic amounts of host are able to increase the enantiomeric excess of the products formed. Several control experiments were performed and provided strong evidence that the modulation of enantiomeric excess of the reaction product indeed stems from a reaction on the inside of the capsule. The origin of the increased enantioselectivity in the capsule was investigated. Furthermore, the substrate and nucleophile scope were studied. Kinetic investigations as well as the kinetic isotope effect measured confirmed that the hydride delivery to the substrate is the rate-determining step inside the capsule. The exploration of benzothiazolidines as alternative hydride sources revealed an unexpected substitution effect of the hydride source itself. The results presented confirm that the noncovalent combination of supramolecular hosts with iminium catalysis is opening up new exciting possibilities to increase enantioselectivity in challenging reactions.
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Affiliation(s)
- Thomas M Bräuer
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Qi Zhang
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland
| | - Konrad Tiefenbacher
- Department of Chemistry, University of Basel , BPR 1096, Postfach 3350, Mattenstrasse 24a, CH-4002 Basel, Switzerland.,Department of Biosystems Science and Engineering, ETH Zürich , Mattenstrasse 26, CH-4058 Basel, Switzerland
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48
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Reid JP, Goodman JM. Selecting Chiral BINOL-Derived Phosphoric Acid Catalysts: General Model To Identify Steric Features Essential for Enantioselectivity. Chemistry 2017; 23:14248-14260. [PMID: 28771900 PMCID: PMC5656902 DOI: 10.1002/chem.201702019] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Indexed: 12/27/2022]
Abstract
Choosing the optimal catalyst for a new transformation is challenging because the ideal molecular requirements of the catalyst for one reaction do not always simply translate to another. Large groups at the 3,3' positions of the binaphthol rings are important for efficient stereoinduction but if they are too large this can lead to unusual or poor results. By applying a quantitative steric assessment of the substituents at the 3,3' positions of the binaphthol ring, we have systematically studied the effect of modulating this group on enantioselectivity for a wide range of reactions involving imines, and verified this analysis using ONIOM calculations. We have shown that in most reactions, the stereochemical outcome depends on both proximal and remote sterics. Summarising detailed calculations into a simple qualitative model identifies and explains the steric features required for high selectivity. This model is consistent with seventy seven papers reporting reactions (over 1000 transformations in total), and provides a straightforward decision tree for selecting the best catalyst.
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Affiliation(s)
- Jolene P. Reid
- Centre for Molecular Informatics, Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUnited Kingdom
| | - Jonathan M. Goodman
- Centre for Molecular Informatics, Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUnited Kingdom
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49
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Parmar D, Sugiono E, Raja S, Rueping M. Addition and Correction to Complete Field Guide to Asymmetric BINOL-Phosphate Derived Brønsted Acid and Metal Catalysis: History and Classification by Mode of Activation; Brønsted Acidity, Hydrogen Bonding, Ion Pairing, and Metal Phosphates. Chem Rev 2017; 117:10608-10620. [DOI: 10.1021/acs.chemrev.7b00197] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Wang Y, Li G, Liu H, Tang Z, Cao Y, Zhao G. Kinetic resolution of indolines through reductive amination of aldehydes by chiral Brønsted acid. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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