1
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Escorihuela J, Lledós A, Ujaque G. Anti-Markovnikov Intermolecular Hydroamination of Alkenes and Alkynes: A Mechanistic View. Chem Rev 2023; 123:9139-9203. [PMID: 37406078 PMCID: PMC10416226 DOI: 10.1021/acs.chemrev.2c00482] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 07/07/2023]
Abstract
Hydroamination, the addition of an N-H bond across a C-C multiple bond, is a reaction with a great synthetic potential. Important advances have been made in the last decades concerning catalysis of these reactions. However, controlling the regioselectivity in the amine addition toward the formation of anti-Markovnikov products (addition to the less substituted carbon) still remains a challenge, particularly in intermolecular hydroaminations of alkenes and alkynes. The goal of this review is to collect the systems in which intermolecular hydroamination of terminal alkynes and alkenes with anti-Markovnikov regioselectivity has been achieved. The focus will be placed on the mechanistic aspects of such reactions, to discern the step at which regioselectivity is decided and to unravel the factors that favor the anti-Markovnikov regioselectivity. In addition to the processes entailing direct addition of the amine to the C-C multiple bond, alternative pathways, involving several reactions to accomplish anti-Markovnikov regioselectivity (formal hydroamination processes), will also be discussed in this review. The catalysts gathered embrace most of the metal groups of the Periodic Table. Finally, a section discussing radical-mediated and metal-free approaches, as well as heterogeneous catalyzed processes, is also included.
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Affiliation(s)
- Jorge Escorihuela
- Departament
de Química Orgànica, Universitat
de València, 46100 Burjassot, Valencia, Spain
| | - Agustí Lledós
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Gregori Ujaque
- Departament
de Química and Centro de Innovación en Química
Avanzada (ORFEO-CINQA), Universitat Autònoma
de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
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2
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Berry SS, Jones S. Current applications of kinetic resolution in the asymmetric synthesis of substituted pyrrolidines. Org Biomol Chem 2021; 19:10493-10515. [PMID: 34842884 DOI: 10.1039/d1ob01943k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Chiral substituted pyrrolidines are key elements in various biologically active molecules and are therefore valuable synthetic targets. One traditional method towards enantiomerically pure compounds is the application of kinetic resolution. In this review, current KR methodology used in the synthesis of substituted pyrrolidines is surveyed, including enzymatic methods, cycloadditions and reduction of ketones.
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Affiliation(s)
- Sian S Berry
- Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, UK.
| | - Simon Jones
- Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, UK.
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3
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Qin T, Lv G, Meng Q, Zhang G, Xiong T, Zhang Q. Cobalt-Catalyzed Radical Hydroamination of Alkenes with N-Fluorobenzenesulfonimides. Angew Chem Int Ed Engl 2021; 60:25949-25957. [PMID: 34562047 DOI: 10.1002/anie.202110178] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/11/2021] [Indexed: 11/10/2022]
Abstract
An efficient and general radical hydroamination of alkenes using Co(salen) as catalyst, N-fluorobenzenesulfonimide (NFSI) and its analogues as both nitrogen source and oxidant was successfully disclosed. A variety of alkenes, including aliphatic alkenes, styrenes, α, β-unsaturated esters, amides, acids, as well as enones, were all compatible to provide desired amination products. Mechanistic experiments suggest that the reaction underwent a metal-hydride-mediated hydrogen atom transfer (HAT) with alkene, followed by a pivotal catalyst controlled SN 2-like pathway between in situ generated organocobalt(IV) species and nitrogen-based nucleophiles. Moreover, by virtue of modified chiral cobalt(II)-salen catalyst, an unprecedented asymmetric version was also achieved with good to excellent level of enantiocontrol. This novel asymmetric radical C-N bond construction opens a new door for the challenging asymmetric radical hydrofunctionalization.
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Affiliation(s)
- Tao Qin
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Guowei Lv
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qi Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Ge Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Tao Xiong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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4
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Qin T, Lv G, Meng Q, Zhang G, Xiong T, Zhang Q. Cobalt‐Catalyzed Radical Hydroamination of Alkenes with
N
‐Fluorobenzenesulfonimides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Qin
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Guowei Lv
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qi Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Ge Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Tao Xiong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Department of Chemistry Northeast Normal University Changchun 130024 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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5
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Peng C, Gao Y, Wang P, Zhao Y, Chapagain B, Wang Y, Liu W, Yang Y. Theoretical Exploration of Copper-Catalyzed Mechanisms of Cope-Type Hydroamination of Cyclopropene and Oxime. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Bary G, Jamil MI, Arslan M, Ghani L, Ahmed W, Ahmad H, Zaman G, Ayub K, Sajid M, Ahmad R, Huang D, Liu F, Wang Y. Regio- and stereoselective functionalization of alkenes with emphasis on mechanistic insight and sustainability concerns. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101260] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Banerjee I, Panda TK. Recent developments in the reduction of unsaturated bonds by magnesium precursors. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Indrani Banerjee
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy India
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Sangareddy India
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8
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Ruthenium (II) β-diketimine as hydroamination catalyst, crystal structure and DFT computations. TRANSIT METAL CHEM 2021. [DOI: 10.1007/s11243-021-00456-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Dong S, Chen J, Qiao K, Fang J, Yang Y, Maron L, Liu B. Insights into Rare-Earth Metal Complex-Mediated Hydroamination. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuqi Dong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Jinjin Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Kening Qiao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jian Fang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yan Yang
- LPCNO, University of Toulouse, INSA Toulouse 135, avenue de Rangueil, Toulouse Cedex 31077, France
| | - Laurent Maron
- LPCNO, University of Toulouse, INSA Toulouse 135, avenue de Rangueil, Toulouse Cedex 31077, France
| | - Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, Anhui, China
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10
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Chen Z, Nie XD, Sun JT, Yang AM, Wei BG. Zn(OTf) 2-catalyzed hydroamination of ynamides with aromatic amines. Org Biomol Chem 2021; 19:2492-2501. [PMID: 33656504 DOI: 10.1039/d0ob02603d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The Zn(OTf)2-catalyzed hydroamination of ynamides 2a-2l with aromatic amines 1a-1r was developed. This protocol features broad substrate scope of aromatic amines, good functional group tolerance for ynamides, and excellent regioselectivities. As a result, a variety of substituted amidine compounds 3aa-3oa, 3ab-3al and 3pa-3rk were prepared in moderate to excellent yields and with high regioselectivities.
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Affiliation(s)
- Zhuo Chen
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
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11
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Foster D, Gao P, Zhang Z, Sipos G, Sobolev AN, Nealon G, Falivene L, Cavallo L, Dorta R. Design, scope and mechanism of highly active and selective chiral NHC-iridium catalysts for the intramolecular hydroamination of a variety of unactivated aminoalkenes. Chem Sci 2021; 12:3751-3767. [PMID: 34163649 PMCID: PMC8179506 DOI: 10.1039/d0sc05884j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/04/2021] [Indexed: 01/28/2023] Open
Abstract
Chiral, cationic NHC-iridium complexes are introduced as catalysts for the intramolecular hydroamination reaction of unactivated aminoalkenes. The catalysts show high activity in the construction of a range of 5- and 6-membered N-heterocycles, which are accessed in excellent optical purity, with various functional groups being tolerated with this system. A major deactivation pathway is presented and eliminated by using alternative reaction conditions. A detailed experimental and computational study on the reaction mechanism is performed providing valuable insights into the mode of action of the catalytic system and pointing to future modifications to be made for this catalytic platform.
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Affiliation(s)
- Daven Foster
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Pengchao Gao
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Ziyun Zhang
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Gellért Sipos
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Alexandre N Sobolev
- Centre for Microscopy, Characterisation and Analysis, University of Western Australia 35 Stirling Highway 6009 Perth WA Australia
| | - Gareth Nealon
- Centre for Microscopy, Characterisation and Analysis, University of Western Australia 35 Stirling Highway 6009 Perth WA Australia
| | - Laura Falivene
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Reto Dorta
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
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12
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Ye ZP, Hu YZ, Xia PJ, Xiang HY, Chen K, Yang H. Photocatalytic intermolecular anti-Markovnikov hydroamination of unactivated alkenes with N-hydroxyphthalimide. Org Chem Front 2021. [DOI: 10.1039/d0qo01321h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A visible-light-induced/phosphite-promoted anti-Markovnikov hydroamination of alkenes with N-hydroxyphthalimide was successfully realized, which was initiated by a proton-coupled electron transfer to enable direct cleavage of its N–O bond.
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Affiliation(s)
- Zhi-Peng Ye
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yuan-Zhuo Hu
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
- School of Chemistry and Pharmaceutical Sciences
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
- State Key Laboratory of Chemical Oncogenomics
| | - Hua Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
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13
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Wu YH, Zhang LY, Wang NX, Xing Y. Recent advances in the rare-earth metal triflates-catalyzed organic reactions. CATALYSIS REVIEWS 2020. [DOI: 10.1080/01614940.2020.1831758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yue-Hua Wu
- Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Lei-Yang Zhang
- Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Nai-Xing Wang
- Technical Institute of Physics and Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Yalan Xing
- Department of Chemistry, William Paterson University of New Jersey, New Jersey, United States
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14
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Tanaka N, Usuki T. Can Heteroarenes/Arenes Be Hydrogenated Over Catalytic Pd/C Under Ambient Conditions? European J Org Chem 2020. [DOI: 10.1002/ejoc.202000695] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nao Tanaka
- Department of Materials and Life Sciences, Faculty of Science and Technology Sophia University 7‐1 Kioicho, Chiyoda‐ku 102‐8554 Tokyo Japan
| | - Toyonobu Usuki
- Department of Materials and Life Sciences, Faculty of Science and Technology Sophia University 7‐1 Kioicho, Chiyoda‐ku 102‐8554 Tokyo Japan
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15
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Yu ZL, Cheng YF, Jiang NC, Wang J, Fan LW, Yuan Y, Li ZL, Gu QS, Liu XY. Desymmetrization of unactivated bis-alkenes via chiral Brønsted acid-catalysed hydroamination. Chem Sci 2020; 11:5987-5993. [PMID: 34094089 PMCID: PMC8159283 DOI: 10.1039/d0sc00001a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Although great success has been achieved in catalytic asymmetric hydroamination of unactivated alkenes using transition metal catalysis and organocatalysis, the development of catalytic desymmetrising hydroamination of such alkenes remains a tough challenge in terms of attaining a high level of stereocontrol over both remote sites and reaction centers at the same time. To address this problem, here we report a highly efficient and practical desymmetrising hydroamination of unactivated alkenes catalysed by chiral Brønsted acids with both high diastereoselectivity and enantioselectivity. This method features a remarkably broad alkene scope, ranging from mono-substituted and gem-/1,2-disubstituted to the challenging tri- and tetra-substituted alkenes, to provide access to a variety of diversely functionalized chiral pyrrolidines bearing two congested tertiary or quaternary stereocenters with excellent efficiency under mild and user-friendly synthetic conditions. The key to success is indirect activation of unactivated alkenes by chiral Brønsted acids via a concerted hydroamination mechanism.
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Affiliation(s)
- Zhang-Long Yu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Yong-Feng Cheng
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Na-Chuan Jiang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Jian Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Li-Wen Fan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Yue Yuan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518055 China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518055 China .,Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
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16
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Oishi M, Yoshimura R, Nomura N. Dinuclear Pentacoordinated Organoyttrium Biphenolates as Initiators for the Synthesis of High-Molecular Weight Isotactic Poly(2-vinylpyridine). Inorg Chem 2019; 58:13755-13760. [DOI: 10.1021/acs.inorgchem.9b02385] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masataka Oishi
- School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Reiji Yoshimura
- Laboratory of Polymer Chemistry, Graduate School of Bioagricultural Sciences, E1-1(300), Nagoya University, Nagoya 464-8601, Japan
| | - Nobuyoshi Nomura
- Laboratory of Polymer Chemistry, Graduate School of Bioagricultural Sciences, E1-1(300), Nagoya University, Nagoya 464-8601, Japan
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17
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Shigeno M, Nakamura R, Hayashi K, Nozawa-Kumada K, Kondo Y. Catalytic Amination of β-(Hetero)arylethyl Ethers by Phosphazene Base t-Bu-P4. Org Lett 2019; 21:6695-6699. [PMID: 31403305 DOI: 10.1021/acs.orglett.9b02309] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the catalytic amination of β-(hetero)arylethyl ethers with amines using the organic superbase t-Bu-P4 to obtain β-(hetero)arylethylamines. The reaction has a broad substrate scope and allows the transformations of electron-deficient and electron-neutral β-(hetero)arylethyl ethers with various amines including pyrrole, N-alkylaniline, diphenylamine, aniline, indole, and indoline derivatives. Mechanistic studies indicate a two-reaction pathway of MeOH elimination from the substrate to form a (hetero)arylalkene followed by the hydroamination of the alkene.
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Affiliation(s)
- Masanori Shigeno
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Ryutaro Nakamura
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kazutoshi Hayashi
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kanako Nozawa-Kumada
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Yoshinori Kondo
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
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18
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Xu C, Feng Y, Li F, Han J, He YM, Fan QH. A Synthetic Route to Chiral Benzo-Fused N-Heterocycles via Sequential Intramolecular Hydroamination and Asymmetric Hydrogenation of Anilino-Alkynes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00183] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cong Xu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yu Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Faju Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jiahong Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), and University of Chinese Academy of Sciences, Beijing 100190, PR China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, PR China
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19
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Nguyen HN, Hultzsch KC. Rare-Earth-Metal-Catalyzed Kinetic Resolution of Chiral Aminoalkenes via Hydroamination: The Effect of the Silyl Substituent of the Binaphtholate Ligand on Resolution Efficiency. European J Org Chem 2019; 2019:2592-2601. [PMID: 31244549 PMCID: PMC6582503 DOI: 10.1002/ejoc.201900107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 01/11/2023]
Abstract
The kinetic resolution of α-substituted aminopentenes via intramolecular hydroamination was investigated using various 3,3'-silyl-substituted binaphtholate yttrium catalysts. High efficiencies in the kinetic resolution were observed for methyl-, benzyl-, and phenyl-substituted substrates utilizing the cyclohexyldiphenylsilyl-substituted catalyst 2c with resolution factors reaching as high as 90(5) for hex-5-en-2-amine (3a). Kinetic analysis of the enantioenriched substrates with the matching and mismatching catalyst revealed that the efficiency of catalyst 2c benefits significantly from a favorable Curtin-Hammett pre-equilibrium and by a large kfast/kslow ratio. Other binaphtholate catalysts were less efficient due to a less favorable Curtin-Hammett pre-equilibrium, which often favored the mismatching substrate-catalyst combination. Cyclization of the matched substrate proceeds generally with large trans-selectivity, whereas the trans/cis-ratio for mismatched substrates is significantly diminished, favoring the cis-cyclization product isomer in some instances.
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Affiliation(s)
- Hiep N Nguyen
- Department of Chemistry and Chemical Biology Rutgers, The State University of New Jersey 610 Taylor Road 8087 Piscataway, New Jersey 08854- USA
| | - Kai C Hultzsch
- Universität Wien Fakultät für Chemie Institut für Chemische Katalyse Währinger Straße 38 1090 Wien Austria
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20
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Bhattacharjee J, Harinath A, Banerjee I, Nayek HP, Panda TK. Highly Active Dinuclear Titanium(IV) Complexes for the Catalytic Formation of a Carbon-Heteroatom Bond. Inorg Chem 2018; 57:12610-12623. [PMID: 30259733 DOI: 10.1021/acs.inorgchem.8b01766] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of mononuclear titanium(IV) complexes with the general composition κ3-[R{NHPh2P(X)}2Ti(NMe2)2] [R = C6H4, X = Se (3b); R = trans-C6H10, X = S (4a), Se (4b)] and [{κ2-N(PPh2Se)2}2Ti(NMe2)2] (6b) and two dinuclear titanium(IV) complexes, [C6H4{(NPh2PS)(N)}Ti(NMe2)]2 (3c) and [{κ2-N(PPh2Se)}Ti(NMe2)2]2 (6c), are reported. Dinuclear titanium(IV) complex 6c acts as an efficient catalyst for the chemoselective addition of an E-H bond (E = N, O, S, P, C) to heterocumulenes under mild conditions. The catalytic addition of aliphatic and aromatic amines, alcohol, thiol, phosphine oxide, and acetylene to the carbodiimides afforded the corresponding hydroelemented products in high yield at mild conditions with a broader substrate scope. The catalytic efficiency of the dinuclear complex depends on the cooperative effect of the TiIV ions, the systematic variation of the intermetallic distance, and the ligand's steric properties of the complex, which enhances the reaction rate. Most interestingly, this is the first example of catalytic insertion of various E-H bonds into the carbodiimides using a single-site catalyst because only the titanium-mediated insertion of E-H into a C═N unsaturated bond is reported to date. The amine and alcohol insertion reaction with the carbodiimides showed first-order kinetics with respect to the titanium(IV) catalyst as well as substrates. A most plausible mechanism for hydroelementation reaction is also proposed, based on the spectroscopic data of the controlled reaction, a time-course study, and the Hammett plot.
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Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry , Indian Institute of Technology Hyderabad Kandi , Sangareddy , Telangana 502 285 , India
| | - Adimulam Harinath
- Department of Chemistry , Indian Institute of Technology Hyderabad Kandi , Sangareddy , Telangana 502 285 , India
| | - Indrani Banerjee
- Department of Chemistry , Indian Institute of Technology Hyderabad Kandi , Sangareddy , Telangana 502 285 , India
| | - Hari Pada Nayek
- Department of Applied Chemistry , Indian Institute of Technology Dhanbad , Dhanbad , Jharkhand 826004 , India
| | - Tarun K Panda
- Department of Chemistry , Indian Institute of Technology Hyderabad Kandi , Sangareddy , Telangana 502 285 , India
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21
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Hannedouche J, Schulz E. Hydroamination and Hydroaminoalkylation of Alkenes by Group 3–5 Elements: Recent Developments and Comparison with Late Transition Metals. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00431] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
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22
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Nguyen HN, Lee H, Audörsch S, Reznichenko AL, Nawara-Hultzsch AJ, Schmidt B, Hultzsch KC. Asymmetric Intra- and Intermolecular Hydroamination Catalyzed by 3,3′-Bis(trisarylsilyl)- and 3,3′-Bis(arylalkylsilyl)-Substituted Binaphtholate Rare-Earth-Metal Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00510] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiep N. Nguyen
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Hyeunjoo Lee
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Stephan Audörsch
- Institut für Chemie, Organische Synthesechemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany
| | - Alexander L. Reznichenko
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Agnieszka J. Nawara-Hultzsch
- University of Vienna, Faculty of Chemistry, Institute of Chemical Catalysis, Währinger Strasse 38, 1090 Vienna, Austria
| | - Bernd Schmidt
- Institut für Chemie, Organische Synthesechemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany
| | - Kai C. Hultzsch
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
- University of Vienna, Faculty of Chemistry, Institute of Chemical Catalysis, Währinger Strasse 38, 1090 Vienna, Austria
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23
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Hanft A, Lichtenberg C. New Perspectives for Aminotroponiminates: Coordination Chemistry, Redox Behavior, Cooperativity, and Catalysis. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800465] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Hanft
- Department of Inorganic Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Crispin Lichtenberg
- Department of Inorganic Chemistry; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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24
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Groso EJ, Golonka AN, Harding RA, Alexander BW, Sodano TM, Schindler CS. 3-Aryl-2,5-Dihydropyrroles via Catalytic Carbonyl-Olefin Metathesis. ACS Catal 2018; 8:2006-2011. [PMID: 30276008 PMCID: PMC6162066 DOI: 10.1021/acscatal.7b03769] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we describe the development of a synthetic strategy towards chiral 3-pyrrolines based on the design principle of iron(III)-catalyzed carbonyl-olefin metathesis. This approach takes advantage of commercially available amino acids as chiral pool reagents and FeCl3 as a Lewis acid catalyst. Our strategy is characterized by its operational simplicity, mild reaction conditions and functional group tolerance. Investigations show that an electron-deficient nitrogen protecting group overcomes limitations arising from competitive binding of the Lewis acid catalyst to unfavorable Lewis basic sites, which ultimately enables catalytic turnover.
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Affiliation(s)
- Emilia J. Groso
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
| | - Alexander N. Golonka
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
| | - Ryan A. Harding
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
| | - Brandon W. Alexander
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
| | - Taylor M. Sodano
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
| | - Corinna S. Schindler
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Ave., Ann Arbor, Michigan 48109, United States
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25
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Iovan DA, Wilding MJT, Baek Y, Hennessy ET, Betley TA. Diastereoselective C-H Bond Amination for Disubstituted Pyrrolidines. Angew Chem Int Ed Engl 2017; 56:15599-15602. [PMID: 29024289 PMCID: PMC5821116 DOI: 10.1002/anie.201708519] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/10/2017] [Indexed: 12/22/2022]
Abstract
We report herein the improved diastereoselective synthesis of 2,5-disubstituted pyrrolidines from aliphatic azides. Experimental and theoretical studies of the C-H amination reaction mediated by the iron dipyrrinato complex (Ad L)FeCl(OEt2 ) provided a model for diastereoinduction and allowed for systematic variation of the catalyst to enhance selectivity. Among the iron alkoxide and aryloxide catalysts evaluated, the iron phenoxide complex exhibited superior performance towards the generation of syn 2,5-disubstituted pyrrolidines with high diastereoselectivity.
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Affiliation(s)
- Diana A Iovan
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Matthew J T Wilding
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Yunjung Baek
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Elisabeth T Hennessy
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
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26
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Iovan DA, Wilding MJT, Baek Y, Hennessy ET, Betley TA. Diastereoselective C−H Bond Amination for Disubstituted Pyrrolidines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708519] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Diana A. Iovan
- Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Matthew J. T. Wilding
- Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Yunjung Baek
- Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Elisabeth T. Hennessy
- Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA
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27
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Britvin SN, Rumyantsev AM. The 7-aza-norbornane nucleus of epibatidine: 7-aza-bicyclo-[2.2.1]heptan-7-ium chloride. Acta Crystallogr E Crystallogr Commun 2017; 73:1385-1388. [PMID: 28932481 PMCID: PMC5588587 DOI: 10.1107/s2056989017012105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 08/22/2017] [Indexed: 11/10/2022]
Abstract
7-Aza-bicyclo-[2.2.1]heptane (7-aza-norbornane) is a bridged heterocyclic nucleus found in epibatidine, the alkaloid isolated from the skin of the tropical poison frog Epipedobates tricolor. Since epibatidine is known as one of the most potent acetyl-choline nicotinic receptor agonists, a plethora of literature has been devoted to this alkaloid. However, there are no structural data on the unsubstituted 7-aza-norbornane, the parent bicyclic ring of epibatidine and its derivatives. We herein present the structural characterization of the 7-aza-bicyclo-[2.2.1]heptane parent ring as its hydro-chloride salt, namely 7-aza-bicyclo-[2.2.1]heptan-7-ium chloride, C6H12N+·Cl-. The compete cation is generated by a crystallographic mirror plane with the N atom lying on the mirror, as does the chloride anion. In the crystal, the cations are linked to the anions by N-H⋯Cl hydrogen bonds, which generate [001] chains.
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Affiliation(s)
- Sergey N. Britvin
- Department of Crystallography, Saint-Petersburg State University, Universitetskaya Nab. 7/9, 199034 St Petersburg, Russian Federation
| | - Andrey M. Rumyantsev
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Nab. 7/9, 199034 St Petersburg, Russian Federation
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28
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Gao P, Sipos G, Foster D, Dorta R. Developing NHC-Iridium Catalysts for the Highly Efficient Enantioselective Intramolecular Hydroamination Reaction. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02508] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pengchao Gao
- Department of Chemistry,
School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, 6009 Perth, Australia
| | - Gellért Sipos
- Department of Chemistry,
School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, 6009 Perth, Australia
| | - Daven Foster
- Department of Chemistry,
School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, 6009 Perth, Australia
| | - Reto Dorta
- Department of Chemistry,
School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, 6009 Perth, Australia
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29
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Hönig M, Sondermann P, Turner NJ, Carreira EM. Enantioselective Chemo- and Biocatalysis: Partners in Retrosynthesis. Angew Chem Int Ed Engl 2017; 56:8942-8973. [DOI: 10.1002/anie.201612462] [Citation(s) in RCA: 194] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Moritz Hönig
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Philipp Sondermann
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Nicholas J. Turner
- Manchester Institute of Biotechnology & School of Chemistry; University of Manchester; 131 Princess Street Manchester M1 7DN UK
| | - Erick M. Carreira
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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30
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Hönig M, Sondermann P, Turner NJ, Carreira EM. Enantioselektive Chemo- und Biokatalyse: Partner in der Retrosynthese. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612462] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Moritz Hönig
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| | - Philipp Sondermann
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| | - Nicholas J. Turner
- Manchester Institute of Biotechnology & School of Chemistry; University of Manchester; 131 Princess Street Manchester M1 7DN UK
| | - Erick M. Carreira
- Laboratorium für Organische Chemie; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
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31
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Hydroamination of 2-vinylpyridine, styrene, and isoprene with pyrrolidine catalyzed by alkali and alkaline-earth metal complexes. Russ Chem Bull 2017. [DOI: 10.1007/s11172-016-1673-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Germain S, Lecoq M, Schulz E, Hannedouche J. Lithium-Catalyzed anti-Markovnikov Intermolecular Hydroamination Reactions of Vinylarenes and Simple Secondary Amines. ChemCatChem 2017. [DOI: 10.1002/cctc.201700043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Stéphane Germain
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182; Université Paris-Sud, Bâtiment 420; Rue du doyen Georges Poitou Orsay, F- 91405 France
| | - Meije Lecoq
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182; Université Paris-Sud, Bâtiment 420; Rue du doyen Georges Poitou Orsay, F- 91405 France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182; Université Paris-Sud, Bâtiment 420; Rue du doyen Georges Poitou Orsay, F- 91405 France
- CNRS; Orsay, F- 91405 France
| | - Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182; Université Paris-Sud, Bâtiment 420; Rue du doyen Georges Poitou Orsay, F- 91405 France
- CNRS; Orsay, F- 91405 France
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33
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Motolko KSA, Emslie DJH, Jenkins HA. Yttrium and Aluminum Alkyl Complexes of a Rigid Bis-Anilido NON-Donor Ligand: Synthesis and Hydroamination Catalysis. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00156] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kelly S. A. Motolko
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - David J. H. Emslie
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
| | - Hilary A. Jenkins
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada
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34
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Kim B, Ratnayake R, Lee H, Shi G, Zeller SL, Li C, Luesch H, Hong J. Synthesis and biological evaluation of largazole zinc-binding group analogs. Bioorg Med Chem 2017; 25:3077-3086. [PMID: 28416100 DOI: 10.1016/j.bmc.2017.03.071] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 03/23/2017] [Accepted: 03/27/2017] [Indexed: 11/24/2022]
Abstract
Histone acetylation is an extensively investigated post-translational modification that plays an important role as an epigenetic regulator. It is controlled by histone acetyl transferases (HATs) and histone deacetylases (HDACs). The overexpression of HDACs and consequent hypoacetylation of histones have been observed in a variety of different diseases, leading to a recent focus of HDACs as attractive drug targets. The natural product largazole is one of the most potent natural HDAC inhibitors discovered so far and a number of largazole analogs have been prepared to define structural requirements for its HDAC inhibitory activity. However, previous structure-activity relationship studies have heavily investigated the macrocycle region of largazole, while there have been only limited efforts to probe the effect of various zinc-binding groups (ZBGs) on HDAC inhibition. Herein, we prepared a series of largazole analogs with various ZBGs and evaluated their HDAC inhibition and cytotoxicity. While none of the analogs tested were as potent or selective as largazole, the Zn2+-binding affinity of each ZBG correlated with HDAC inhibition and cytotoxicity. We expect that our findings will aid in building a deeper understanding of the role of ZBGs in HDAC inhibition as well as provide an important basis for the future development of new largazole analogs with non-thiol ZBGs as novel therapeutics for cancer.
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Affiliation(s)
- Bumki Kim
- Department of Chemistry, Duke University, Durham, NC 27708, United States
| | - Ranjala Ratnayake
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, United States; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, FL 32610, United States
| | - Hyunji Lee
- Department of Chemistry, Duke University, Durham, NC 27708, United States
| | - Guqin Shi
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Sabrina L Zeller
- Department of Chemistry, Duke University, Durham, NC 27708, United States
| | - Chenglong Li
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, United States; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, FL 32610, United States
| | - Hendrik Luesch
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, United States; Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, FL 32610, United States.
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, NC 27708, United States; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, United States.
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36
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Uthoff F, Sato H, Gröger H. Formal Enantioselective Hydroamination of Non-Activated Alkenes: Transformation of Styrenes into Enantiomerically Pure 1-Phenylethylamines in Chemoenzymatic One-Pot Synthesis. ChemCatChem 2017. [DOI: 10.1002/cctc.201601463] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Florian Uthoff
- Chair of Organic Chemistry I, Faculty of Chemistry; Bielefeld University; Universitätsstraße 25 33615 Bielefeld Germany
| | - Hirofumi Sato
- Chair of Organic Chemistry I, Faculty of Chemistry; Bielefeld University; Universitätsstraße 25 33615 Bielefeld Germany
| | - Harald Gröger
- Chair of Organic Chemistry I, Faculty of Chemistry; Bielefeld University; Universitätsstraße 25 33615 Bielefeld Germany
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37
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Nebe M, Opatz T. Synthesis of Piperidines and Dehydropiperidines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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38
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Chai Z, Chu J, Qi Y, Tang M, Hou J, Yang G. Half-sandwich chiral rare-earth metal complexes with linked tridentate amido-indenyl ligand: synthesis, characterization, and catalytic properties for intramolecular hydroamination. RSC Adv 2017. [DOI: 10.1039/c6ra26537e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel rare-earth metal complexes featuring a tridentate carbon-linked amido-indenyl ligand have been synthesized and used to catalyze the intramolecular olefin hydroamination.
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Affiliation(s)
- Zhuo Chai
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Jiang Chu
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Yunyi Qi
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Mujun Tang
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Jinsong Hou
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
| | - Gaosheng Yang
- Key Laboratory of Functionalized Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials
- Institute of Organic Chemistry
- College of Chemistry and Materials Science
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39
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De Tullio M, Hernán-Gómez A, Livingstone Z, Clegg W, Kennedy AR, Harrington RW, Antiñolo A, Martínez A, Carrillo-Hermosilla F, Hevia E. Structural and Mechanistic Insights into s-Block Bimetallic Catalysis: Sodium Magnesiate-Catalyzed Guanylation of Amines. Chemistry 2016; 22:17646-17656. [PMID: 27786387 DOI: 10.1002/chem.201602906] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Indexed: 11/06/2022]
Abstract
To advance the catalytic applications of s-block mixed-metal complexes, sodium magnesiate [NaMg(CH2 SiMe3 )3 ] (1) is reported as an efficient precatalyst for the guanylation of a variety of anilines and secondary amines with carbodiimides. First examples of hydrophosphination of carbodiimides by using a Mg catalyst are also described. The catalytic ability of the mixed-metal system is much greater than that of its homometallic components [NaCH2 SiMe3 ] and [Mg(CH2 SiMe3 )2 ]. Stoichiometric studies suggest that magnesiate amido and guanidinate complexes are intermediates in these catalytic routes. Reactivity and kinetic studies imply that these guanylation reactions occur via (tris)amide intermediates that react with carbodiiimides in insertion steps. The rate law for the guanylation of N,N'-diisopropylcarbodiimide with 4-tert-butylaniline catalyzed by 1 is first order with respect to [amine], [carbodiimide], and [catalyst], and the reaction shows a large kinetic isotopic effect, which is consistent with an amine-assisted rate-determining carbodiimide insertion transition state. Studies to assess the effect of sodium in these transformations denote a secondary role with little involvement in the catalytic cycle.
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Affiliation(s)
- Marco De Tullio
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Alberto Hernán-Gómez
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Zoe Livingstone
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - William Clegg
- School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Ross W Harrington
- School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Antonio Martínez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha Campus Universitario, 13071, Ciudad Real, Spain
| | - Eva Hevia
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
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40
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Bhattacharjee J, Das S, Kottalanka RK, Panda TK. Hydroamination of carbodiimides, isocyanates, and isothiocyanates by a bis(phosphinoselenoic amide) supported titanium(iv) complex. Dalton Trans 2016; 45:17824-17832. [PMID: 27774537 DOI: 10.1039/c6dt03063g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The hydroamination of heterocumulenes such as carbodiimides, isocyanates, and isothiocyanates by a bis(phosphinoselenoic amide) supported titanium(iv) complex as a precatalyst is reported here. The titanium(iv) complex [{Ph2P(Se)NCH2CH2NPPh2(Se)}Ti(NMe2)2] (1) was synthesised by the reaction of tetrakis-(dimethylamido)titanium(iv) [Ti(NMe2)4] with [{Ph2P(Se)NHCH2CH2NHPPh2(Se)}] in toluene at ambient temperature. Titanium complex 1 proved to be a competent pre-catalyst for the addition of an amine N-H bond to carbodiimides, isocyanates, and isothiocyanates. The reaction scope was expanded to reactions of aliphatic and aromatic amines with phenylisocyanates and phenylisothiocyanates in toluene solvents proceeding rapidly at room temperature with 5 mol% catalyst loadings to yield the corresponding urea and thio-urea derivatives up to 99%. However, ambient temperature was needed for hydroamination of 1,3-dicyclohexylcarbodiimide. The amine addition reactions with isocyanates showed first order kinetics with respect to catalyst 1 as well as substrates. The most plausible mechanism for the hydroamination reaction was established by isolating 1,1-dimethylphenyl urea as a side product.
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Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
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41
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42
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Brunner TS, Benndorf P, Gamer MT, Knöfel N, Gugau K, Roesky PW. Enantiopure Amidinate Complexes of the Rare-Earth Elements. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00523] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Tobias S. Brunner
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Paul Benndorf
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Michael T. Gamer
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Nicolai Knöfel
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Katharina Gugau
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
| | - Peter W. Roesky
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie (KIT), Engesserstraße
15, 76131 Karlsruhe, Germany
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43
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Pušavec Kirar E, Drev M, Mirnik J, Grošelj U, Golobič A, Dahmann G, Požgan F, Štefane B, Svete J. Synthesis of 3D-Rich Heterocycles: Hexahydropyrazolo[1,5-a]pyridin-2(1H)-ones and Octahydro-2H-2a,2a 1-diazacyclopenta[cd]inden-2-ones. J Org Chem 2016; 81:8920-8933. [PMID: 27627112 DOI: 10.1021/acs.joc.6b01608] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Two cyclic azomethine imines, 7-methyl- and 7-phenyl-2-oxo-Δ7-hexahydropyrazolo[1,5-a]pyridin-8-ium-1-ide, were prepared in seven steps from the respective commercially available δ-keto acids. The addition of Grignard reagents followed by N-alkylation at position 1 afforded the 1,7,7-trisubstituted hexahydropyrazolo[1,5-a]pyridin-2(1H)-ones, whereas 1,3-dipolar cycloadditions of these dipoles to typical acetylenic and olefinic dipolarophiles gave 4a-substituted 2a,2a1-diazacyclopenta[cd]indene derivatives as the first representatives of a novel heterocyclic system. Regio- and stereoselectivity as well as the mechanism of these [3 + 2]-cycloadditions were evaluated using computational and experimental methods. The data obtained were in agreement with the polar concerted cycloaddition mechanism via the energetically favorable syn/endo-transition states.
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Affiliation(s)
- Eva Pušavec Kirar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Miha Drev
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Jona Mirnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Uroš Grošelj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Amalija Golobič
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Georg Dahmann
- Medicinal Chemistry, Boehringer-Ingelheim Pharma GmbH&Co. KG, 88397 Biberach, Germany
| | - Franc Požgan
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana , Večna pot 113, SI-1000 Ljubljana, Slovenia
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44
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Yang B, Lu Z. Visible-Light-Promoted Oxidative [4 + 2] Cycloadditions of Aryl Silyl Enol Ethers. J Org Chem 2016; 81:7288-300. [DOI: 10.1021/acs.joc.6b01016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bo Yang
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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45
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Zeng XP, Cao ZY, Wang YH, Zhou F, Zhou J. Catalytic Enantioselective Desymmetrization Reactions to All-Carbon Quaternary Stereocenters. Chem Rev 2016; 116:7330-96. [DOI: 10.1021/acs.chemrev.6b00094] [Citation(s) in RCA: 468] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xing-Ping Zeng
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Zhong-Yan Cao
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Yu-Hui Wang
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Feng Zhou
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Jian Zhou
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
- State
Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, P. R. China
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46
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Sipos G, Ou A, Skelton BW, Falivene L, Cavallo L, Dorta R. Unusual NHC–Iridium(I) Complexes and Their Use in the Intramolecular Hydroamination of Unactivated Aminoalkenes. Chemistry 2016; 22:6939-46. [DOI: 10.1002/chem.201600378] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Gellért Sipos
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Arnold Ou
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Brian W. Skelton
- Centre for Microscopy, Characterisation and Analysis University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Laura Falivene
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Reto Dorta
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
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47
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Islam MS, Barakat A, Al-Majid AM, Ghabbour HA, Rahman AFMM, Javaid K, Imad R, Yousuf S, Choudhary MI. A concise synthesis and evaluation of new malonamide derivatives as potential α-glucosidase inhibitors. Bioorg Med Chem 2016; 24:1675-82. [PMID: 26972921 DOI: 10.1016/j.bmc.2016.02.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/26/2016] [Accepted: 02/27/2016] [Indexed: 11/28/2022]
Abstract
A series of new malonamide derivatives were synthesized by Michael addition reaction of N(1),N(3)-di(pyridin-2-yl)malonamide into α,β-unsaturated ketones mediated by DBU in DCM at ambient temperature. The inhibitory potential of these compounds in vitro, against α-glucosidase enzyme was evaluated. Result showed that most of malonamide derivatives were identified as a potent inhibitors of α-glucosidase enzyme. Among all the compounds, 4K (IC50=11.7 ± 0.5 μM) was found out as the most active one compared to standard drug acarbose (IC50=840 ± 1.73 μM). Further cytotoxicity of 4a-4m were also evaluated against a number of cancer and normal cell lines and interesting results were obtained.
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Affiliation(s)
- Mohammad Shahidul Islam
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia; Department of Chemistry, Faculty of Science, Alexandria University, PO Box 426, Ibrahimia, 21321 Alexandria, Egypt.
| | - Abdullah M Al-Majid
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Hazem A Ghabbour
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia; Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - A F M Motiur Rahman
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Kulsoom Javaid
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Rehan Imad
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sammer Yousuf
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - M Iqbal Choudhary
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia; H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
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48
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Naktode K, Das S, Bhattacharjee J, Nayek HP, Panda TK. Imidazolin-2-iminato Ligand-Supported Titanium Complexes as Catalysts for the Synthesis of Urea Derivatives. Inorg Chem 2016; 55:1142-53. [PMID: 26789927 DOI: 10.1021/acs.inorgchem.5b02302] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of tetrakis(dimethylamido)titanium(IV) [Ti(NMe2)4] with three different imidazolin-2-imines (Im(R)NH; R = tert-butyl (tBu), mesityl (Mes), and 2,6-diisopropylphenyl (Dipp)) afforded the corresponding titanium imidazolin-2-iminato complexes [(Im(R)N)Ti(NMe2)3] (R = tBu, 1a; R = Mes, 1b; R = Dipp, 1c). Treatment of complex 1a with two different carbodiimides [R'N═C═NR'; R' = cyclohexyl (Cy) and isopropyl (iPr)] resulted in the formation of imidazolin-2-iminato titanium mono(guanidinate) complex of the type [(Im(R)N)Ti(R'NC(NMe2)NR') (NMe2)2 (R' = iPr; R = tBu (2a), R = Dipp (2c); R' = Cy, R = tBu (3a)], as yellow solid in 94% yield. However, a similar reaction of 1b and 1c with 2 equiv of phenyl isocyanates at ambient temperature resulted in the formation of corresponding titanium bis(ureate) complexes [(Im(R)N)Ti{κ(2)-OC(NMe2)NPh}2(NMe2)] (R = Mes, 4b and R = Dipp, 4c). Three equivalents of phenyl isothiocyanate reacted with complex 1c to afford respective titanium tris(thioureate) complex [(Im(Dipp)N)Ti{κ(2)-SC(NMe2)NPh}2{κ(1)-SC(NMe2)NPh}] (6c). The molecular structures of 1a-c, 2a, 2c, 3a, 4c, and 6c were established by X-ray diffraction analyses, and, from the solid-state structures of 1a-c, 2a, 2c, 3a, 4c, and 6c, it was confirmed that the imidazolin-2-iminato titanium bond in each case is very short and possesses a multiple-bonding character. The imidazolin-2-iminato titanium complex 1c was utilized as a precatalyst for the addition of amine N-H bond to phenyl isocyanate. High yields of the corresponding urea derivatives were achieved under mild conditions. The mechanistic study of the aforementioned catalytic reaction was performed, and the active catalyst complex 7b was isolated using 2 equiv of iminopyrrole [2-(2,6-iPr2C6H3N═CH)C4H3NH] and the complex 4b. The molecular structure of 7b was thereafter established.
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Affiliation(s)
- Kishor Naktode
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Suman Das
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian School of Mines , Dhanbad, 826004 Jharkhand, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
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49
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Bender CF, Brown TJ, Widenhoefer RA. Mechanism of the Platinum(II)-Catalyzed Hydroamination of 4-Pentenylamines. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00821] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher F. Bender
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
| | - Timothy J. Brown
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
| | - Ross A. Widenhoefer
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
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50
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Cimino A, Moscatelli F, Ferretti F, Ragaini F, Germain S, Hannedouche J, Schulz E, Luconi L, Rossin A, Giambastiani G. Novel yttrium and zirconium catalysts featuring reduced Ar-BIANH2 ligands for olefin hydroamination (Ar-BIANH2 = bis-arylaminoacenaphthylene). NEW J CHEM 2016. [DOI: 10.1039/c6nj02199a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Even demanding aminoalkenes can be cyclized by Ar-BIANH2 yttrium complexes; a related zirconium complex has been crystallographically characterized.
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Affiliation(s)
- Alessandro Cimino
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Filippo Moscatelli
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Francesco Ferretti
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Fabio Ragaini
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Stéphane Germain
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- UMR CNRS 8182
- Université Paris-Sud
- Orsay Cedex
- France
| | - Jérôme Hannedouche
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- UMR CNRS 8182
- Université Paris-Sud
- Orsay Cedex
- France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- UMR CNRS 8182
- Université Paris-Sud
- Orsay Cedex
- France
| | - Lapo Luconi
- Institute of Chemistry of Organometallic Compounds ICCOM-CNR and Consorzio INSTM
- 50019 Sesto F.no Florence
- Italy
| | - Andrea Rossin
- Institute of Chemistry of Organometallic Compounds ICCOM-CNR and Consorzio INSTM
- 50019 Sesto F.no Florence
- Italy
| | - Giuliano Giambastiani
- Institute of Chemistry of Organometallic Compounds ICCOM-CNR and Consorzio INSTM
- 50019 Sesto F.no Florence
- Italy
- Kazan Federal University
- 420008 Kazan
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