1
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Zhou W, Cong X, Nishiura M, Hou Z. Synthesis of allylanilines via scandium-catalysed benzylic C(sp 3)-H alkenylation with alkynes. Chem Commun (Camb) 2022; 58:7257-7260. [PMID: 35666084 DOI: 10.1039/d2cc02489f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The ortho-selective benzylic C(sp3)-H alkenylation of 2-methyl tertiary anilines with internal alkynes has been achieved for the first time by using a half-sandwich scandium catalyst. This protocol provides a straightforward route for the synthesis of a new family of 2-allylaniline derivatives, featuring broad substrate scope, 100% atom-efficiency, high yields, and high chemo-, regio-, and stereoselectivity.
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Affiliation(s)
- Wei Zhou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Xuefeng Cong
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Masayoshi Nishiura
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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2
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Disentangled UHMWPE@silica powders for potential use in power bed fusion based additive manufacturing. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Xie R, Chen S, Wang Y, Yin X, Li SS, Xu L, Wang L. Controllable construction of pharmaceutically significant scaffolds of 2,3-dihydroquinolin-4-one and benzoazepine-5-one via redox-neutral cascade hydride transfer/cyclization. Org Chem Front 2022. [DOI: 10.1039/d2qo01103d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scaffolds of 2,3-dihydroquinolin-4-one and benzoazepine-5-one were controllably constructed relying on cascade condensation/redox-neutral [1,6]/[1,7]-hydride transfer/cyclization from 2-aminoacetophenone and various aldehydes as well as isatins.
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Affiliation(s)
- Ronghao Xie
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Shixiao Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, No. 5 Yushan Road, Qingdao, 266003, P. R. China
| | - Yufeng Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Xiangcong Yin
- Hematology Diagnosis Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P. R. China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
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4
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Z. Zard S, Quiclet-Sire B. The Xanthate Route to Benzazepinones and Their Aza Congeners. HETEROCYCLES 2022. [DOI: 10.3987/rev-22-sr(r)9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Schwickert K, Andrzejewski M, Grabowsky S, Schirmeister T. Synthesis, X-ray Structure Determination, and Comprehensive Photochemical Characterization of (Trifluoromethyl)diazirine-Containing TRPML1 Ligands. J Org Chem 2021; 86:6169-6183. [PMID: 33835801 DOI: 10.1021/acs.joc.0c02993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Potential (trifluoromethyl)diazirine-based TRPML1 ion channel ligands were designed and synthesized, and their structures were determined by single-crystal X-ray diffraction analysis. Photoactivation studies via 19F NMR spectroscopy and HPLC-MS analysis revealed distinct kinetical characteristics in selected solvents and favorable photochemical properties in an aqueous buffer. These photoactivatable TRPML activators represent useful and valuable tools for TRPML photoaffinity labeling combined with mass spectrometry.
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Affiliation(s)
- Kevin Schwickert
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Michał Andrzejewski
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Simon Grabowsky
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Tanja Schirmeister
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Mainz, Staudinger Weg 5, 55128 Mainz, Germany
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6
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Zhang Y, Bao Q, Zhang N, Wang S, Yu X. Stereocontrolled addition of Grignard reagents to oxa-bridged benzazepines: highly efficient synthesis of functionalized benzazepine scaffolds. RSC Adv 2020; 10:41802-41806. [PMID: 35516537 PMCID: PMC9057913 DOI: 10.1039/d0ra08758k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 11/10/2020] [Indexed: 11/21/2022] Open
Abstract
An efficient and highly diastereoselective synthesis of 2-substituted benzo[b]azepin-5-ol via stereocontrolled addition of Grignard reagents to oxa-bridged benzazepines has been developed. The reaction proceeds efficiently starting from versatile skeletons with mild reaction conditions as well as simple operation. Furthermore, 2-substituted benzazepinones could been obtained by simple Dess–Martin oxidation in excellent yields. An efficient and highly diastereoselective synthesis of 2-substituted benzo[b]azepin-5-ol via stereocontrolled addition of Grignard reagents to oxa-bridged benzazepines has been developed.![]()
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Affiliation(s)
- Yuewei Zhang
- School of Chemistry and Pharmaceutical Engineering
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
| | - Qingqing Bao
- School of Chemistry and Pharmaceutical Engineering
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
| | - Ning Zhang
- School of Chemistry and Pharmaceutical Engineering
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
| | - Shuohang Wang
- School of Chemistry and Pharmaceutical Engineering
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
| | - Xue Yu
- School of Chemistry and Pharmaceutical Engineering
- Jilin Institute of Chemical Technology
- Jilin 132022
- China
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7
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Kotha S, Meshram M. Development of New Synthetic Strategies, Tactics and their Applications. CHEM REC 2019; 19:2480-2504. [DOI: 10.1002/tcr.201900041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400 076 India
| | - Milind Meshram
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400 076 India
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8
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Chen KQ, Gao ZH, Ye S. Bifunctional N-heterocyclic carbene catalyzed [3 + 4] annulation of enals with azadienes: enantioselective synthesis of benzofuroazepinones. Org Chem Front 2019. [DOI: 10.1039/c8qo01302k] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bifunctional N-heterocyclic carbene catalyzed [3 + 4] annulation of enals with aurone-derived azadienes was developed to afford benzofuroazepinones with excellent enantioselectivities.
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Affiliation(s)
- Kun-Quan Chen
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Zhong-Hua Gao
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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9
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Kotha S, Meshram M, Chakkapalli C. Synergistic approach to polycycles through Suzuki-Miyaura cross coupling and metathesis as key steps. Beilstein J Org Chem 2018; 14:2468-2481. [PMID: 30344770 PMCID: PMC6176834 DOI: 10.3762/bjoc.14.223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/28/2018] [Indexed: 12/30/2022] Open
Abstract
This account provides an overview of recent work, including our own contribution dealing with Suzuki–Miyaura cross coupling in combination with metathesis (or vice-versa). Several cyclophanes, polycycles, macrocycles, spirocycles, stilbenes, biaryls, and heterocycles have been synthesized by employing a combination of Suzuki cross-coupling and metathesis. Various popular reactions such as Diels–Alder reaction, Claisen rearrangement, cross-metathesis, and cross-enyne metathesis are used. The synergistic combination of these powerful reactions is found to be useful for the construction of complex targets and fulfill synthetic brevity.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076, India
| | - Milind Meshram
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076, India
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10
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Design, synthesis and evaluation of novel 2,2-dimethyl-2,3-dihydroquinolin-4(1H)-one based chalcones as cytotoxic agents. Heliyon 2018; 4:e00767. [PMID: 30191185 PMCID: PMC6125804 DOI: 10.1016/j.heliyon.2018.e00767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 02/07/2023] Open
Abstract
We designed and synthesised a series of novel chalcones, incorporating the heterocyclic framework of 2,2-dimethyl-2,3-dihydro-4(1H)-quinolinone, which was prepared via Sonogashira coupling of a substituted orthoaniline under aqueous conditions using Pd catalysis followed by acid-mediated cyclisation. The compounds were screened against the NCI-N87 and DLD-1 cancer cell lines, with most compounds showing low micromolar cytotoxic activity.
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11
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Kotha S, Meshram M. Application of Claisen Rearrangement and Olefin Metathesis in Organic Synthesis. Chem Asian J 2018; 13:1758-1766. [PMID: 29956880 DOI: 10.1002/asia.201800613] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/17/2018] [Indexed: 11/07/2022]
Abstract
Several new synthetic methods to diverse polycycles and heterocycles on the basis of [3,3]-sigmatropic rearrangement and ring-closing metathesis as key steps are summarized. In this regard, Claisen, aza-Claisen, and Overman rearrangements are used in combination with other popular reactions such as ring-closing metathesis, Suzuki coupling, Diels-Alder reaction, and retro-Diels-Alder reaction. To this end, we prepared polycycles (e.g., cyclophanes, cage molecules), heterocycles (e.g., oxepins, azapins), carbocycles, and spirocycles with the use of the above protocol.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-, 400 076, India
| | - Milind Meshram
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-, 400 076, India
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12
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Kotha S, Meshram M, Dommaraju Y. Design and Synthesis of Polycycles, Heterocycles, and Macrocycles via Strategic Utilization of Ring-Closing Metathesis. CHEM REC 2018; 18:1613-1632. [PMID: 29920922 DOI: 10.1002/tcr.201800025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/18/2018] [Indexed: 02/04/2023]
Abstract
In this perspective, we summarize new synthetic approaches for the construction of various polycyclic compounds involving ring-closing metathesis as a key step. In this regard, we used ring-closing metathesis in combination with other popular reactions like Suzuki-Miyaura coupling, Claisen rearrangement, Fischer indolization, Grignard addition, Diels-Alder reaction, and [2+2] cycloaddition reaction etc. To this end, a variety of functional molecules such as α-amino acids, cyclophanes, heterocycles, propellanes, spirocycles, and macrocycles have been prepared. The strategies developed and the molecules prepared here play a key role in designing new materials and also act as lead compounds in drug design. The strategies and tactics developed here are useful to design polycycles, macrocycles, and heterocycles of diverse ring systems.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-, 400 076, India
| | - Milind Meshram
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-, 400 076, India
| | - Yuvaraj Dommaraju
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-, 400 076, India
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13
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Kotha S, Todeti S, Das T, Datta A. Synthesis of star-shaped pyrrole-based C3-symmetric molecules via ring-closing metathesis, Buchwald–Hartwig cross-coupling and Clauson–Kaas pyrrole synthesis as key steps. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Wang GW, Bower JF. Modular Access to Azepines by Directed Carbonylative C-C Bond Activation of Aminocyclopropanes. J Am Chem Soc 2018; 140:2743-2747. [PMID: 29461050 PMCID: PMC5834216 DOI: 10.1021/jacs.7b13087] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
![]()
A modular
Rh-catalyzed entry to azepines is outlined. Under a CO
atmosphere, protecting group directed C–C bond activation of
aminocyclopropanes provides rhodacyclopentanones. These
intermediates are effective for intramolecular C–H metalation
of either an N-aryl or N-vinyl unit en route to azepine ring systems.
Thus, byproduct-free heterocyclizations are enabled by sequential
C–C activation and C–H functionalization steps.
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Affiliation(s)
- Gang-Wei Wang
- School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
| | - John F Bower
- School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
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15
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Rao Mangina NSVM, Guduru R, Karunakar GV. Synthesis of medium-sized aryl-fused nitrogenous heterocycles via sequential aryne aza-Claisen rearrangement/ring-closing metathesis. Org Biomol Chem 2018. [DOI: 10.1039/c7ob03166a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The reaction of arynes and secondary allylamines furnished ortho-allyl-substituted N-arylanilines via an aza-Claisen rearrangement. In this transformation, the sequential formation of C–C and C–N bonds occurred by involving two aryne molecules under metal-free reaction conditions to provide moderate to good yields of the products.
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Affiliation(s)
- N. S. V. M. Rao Mangina
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research
| | - Ravinder Guduru
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research
| | - Galla V. Karunakar
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research
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16
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Kotha S, Aswar VR, Singhal G. Synthesis of tricyclic units of indole alkaloids: Application of Fischer indolization and olefin metathesis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Li Y, Hu M, Li JH. Silver-Catalyzed Intermolecular [3 + 2]/[5 + 2] Annulation of N-Arylpropiolamides with Vinyl Acids: Facile Synthesis of Fused 2H-Benzo[b]azepin-2-ones. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02061] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Li
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Ming Hu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key
Laboratory of Jiangxi Province for Persistent Pollutants Control and
Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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18
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai 400076 Mumbai India
| | | | - Rashid Ali
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai 400076 Mumbai India
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19
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New atropoisomeric alkenylphenylglycine derivatives: Synthesis of (5R*)- and (5S*)-isomers of (1R*,3aR*,4S*,11S*)-3a,5,9,11-tetramethyl-4,5-dihydro-3aH-1,4-methano[1,3]oxazolo[3,2-a]quinolin-2-one. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Sharif SAI, Calder EDD, Delolo FG, Sutherland A. Synthesis of 5-Amino-2,5-dihydro-1H-benzo[b]azepines Using a One-Pot Multibond Forming Process. J Org Chem 2016; 81:6697-706. [PMID: 27414232 DOI: 10.1021/acs.joc.6b01357] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rapid access to allylic trichloroacetimidates bearing a 2-allylaminoaryl group from readily available 2-iodoanilines combined with a one-pot multibond forming process has allowed the efficient synthesis of a series of 5-amino-2,5-dihydro-1H-benzo[b]azepines. The potential of these compounds as synthetic building blocks was demonstrated by the preparation of a late-stage intermediate of the hyponatremia agent, mozavaptan.
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Affiliation(s)
- Salaheddin A I Sharif
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Ewen D D Calder
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Fábio G Delolo
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
| | - Andrew Sutherland
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
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21
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Kotha S, Ravikumar O. Ring-Rearrangement-Metathesis Approach to Polycycles: Substrate-Controlled Stereochemical Outcome During Grignard Addition. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600596] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
| | - Ongolu Ravikumar
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
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22
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Kotha S, Ravikumar O. Synthesis of fused azacycle via Overman rearrangement and ring-rearrangement metathesis as key steps. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Kotha S, E. Shirbhate M, Kumar Chinnam A, Sreevani G. Synthesis of Phenanthroline and Indole Based Hybrid Cyclophane Derivatives via Ring-Closing Metathesis. HETEROCYCLES 2016. [DOI: 10.3987/com-15-s(t)18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Ynamide Click chemistry in development of triazole VEGFR2 TK modulators. Eur J Med Chem 2015; 103:105-22. [DOI: 10.1016/j.ejmech.2015.08.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/05/2015] [Accepted: 08/06/2015] [Indexed: 11/22/2022]
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25
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Ma W, Fang J, Ren J, Wang Z. Lewis Acid Catalyzed Formal Intramolecular [3 + 3] Cross-Cycloaddition of Cyclopropane 1,1-Diesters for Construction of Benzobicyclo[2.2.2]octane Skeletons. Org Lett 2015; 17:4180-3. [DOI: 10.1021/acs.orglett.5b01927] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Weiwei Ma
- State Key
Laboratory and
Institute of Elemento-Organic Chemistry, Synergetic Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, 94
Weijin Road, Tianjin 300071, P.R. China
| | - Jie Fang
- State Key
Laboratory and
Institute of Elemento-Organic Chemistry, Synergetic Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, 94
Weijin Road, Tianjin 300071, P.R. China
| | - Jun Ren
- State Key
Laboratory and
Institute of Elemento-Organic Chemistry, Synergetic Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, 94
Weijin Road, Tianjin 300071, P.R. China
| | - Zhongwen Wang
- State Key
Laboratory and
Institute of Elemento-Organic Chemistry, Synergetic Innovation Center
of Chemical Science and Engineering (Tianjin), Nankai University, 94
Weijin Road, Tianjin 300071, P.R. China
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26
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Kotha S, Shirbhate ME, Waghule GT. Selected synthetic strategies to cyclophanes. Beilstein J Org Chem 2015; 11:1274-1331. [PMID: 26425186 PMCID: PMC4578384 DOI: 10.3762/bjoc.11.142] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/29/2015] [Indexed: 12/11/2022] Open
Abstract
In this review we cover various approaches to meta- and paracyclophanes involving popular reactions. Generally, we have included a strategy where the reaction was used for assembling the cyclophane skeleton for further functionalization. In several instances, after the cyclophane is made several popular reactions are used and these are not covered here. We included various natural products related to cyclophanes. To keep the length of the review at a manageable level the literature related to orthocyclophanes was not included.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
| | - Mukesh Eknath Shirbhate
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
| | - Gopalkrushna T Waghule
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India
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27
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Kotha S, Deodhar D, Khedkar P. Diversity-oriented synthesis of medicinally important 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic) derivatives and higher analogs. Org Biomol Chem 2015; 12:9054-91. [PMID: 25299735 DOI: 10.1039/c4ob01446d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid (Tic) is a constrained analog of phenylalanine (Phe). The Tic unit has been identified as a core structural element present in several peptide-based drugs and forms an integral part of various biologically active compounds. This report covers the biological significance of the Tic core and provides a detailed account of various synthetic approaches available for the construction of Tic derivatives. Along with the traditional methods such as the Pictet-Spengler and Bischler-Nepieralski reactions, we cover various recent approaches such as enyne metathesis, [2 + 2 + 2] cycloaddition and the Diels-Alder reaction to generate Tic derivatives. In addition, syntheses of higher analogs of Tic are also discussed.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai - 400 076, India.
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28
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Hassam M, Taher A, Arnott GE, Green IR, van Otterlo WAL. Isomerization of Allylbenzenes. Chem Rev 2015; 115:5462-569. [DOI: 10.1021/acs.chemrev.5b00052] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mohammad Hassam
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Abu Taher
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Gareth E. Arnott
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Ivan R. Green
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
| | - Willem A. L. van Otterlo
- Department
of Chemistry and Polymer Science, Stellenbosch University, Private Bag
X1, Matieland 7602, South Africa
- School
of Chemistry, University of the Witwatersrand, Braamfontein, Johannesburg 2000, South Africa
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29
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Kotha S, Chavan AS, Goyal D. Diversity-Oriented Approaches to Polycyclics and Bioinspired Molecules via the Diels-Alder Strategy: Green Chemistry, Synthetic Economy, and Beyond. ACS COMBINATORIAL SCIENCE 2015; 17:253-302. [PMID: 25875156 DOI: 10.1021/co500146u] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We describe diverse approaches to various dienes and their utilization in the Diels-Alder reaction to produce a variety of polycycles. The dienes covered here are prepared by simple alkylation reaction or via the Claisen rearrangement or by enyne metathesis of alkyne or enyne building blocks. Here, we have also included the Diels-Alder chemistry of dendralenes, a higher analog of cross-conjugated dienes. The present article is inclusive of o-xylylene derivatives that are generated in situ starting with benzosultine or benzosulfone derivatives. The Diels-Alder reaction of these dienes with various dienophiles gave diverse polycyclic systems and biologically important targets.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
| | - Arjun S. Chavan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
| | - Deepti Goyal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 India
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30
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Kotha S, Ali R, Srinivas V, Krishna NG. Diversity-oriented approach to spirocycles with indole moiety via Fischer indole cyclization, olefin metathesis and Suzuki–Miyaura cross-coupling reactions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Zhang Y, Yang F, Zheng L, Dang Q, Bai X. A Cascade of Acid-Promoted C–O Bond Cleavage and Redox Reactions: From Oxa-Bridged Benzazepines to Benzazepinones. Org Lett 2014; 16:6041-3. [PMID: 25397583 DOI: 10.1021/ol502971e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yuewei Zhang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Fengzhi Yang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Lianyou Zheng
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Qun Dang
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
| | - Xu Bai
- The Center for
Combinatorial
Chemistry and Drug Discovery of Jilin University, The College of Chemistry
and The School of Pharmaceutical Sciences, Jilin University, 1266
Fujin Lu, Changchun, Jilin 130021, P. R. China
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32
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Li C, Zhang L, Shu S, Liu H. A simple copper-catalyzed two-step one-pot synthesis of indolo[1,2-a]quinazoline. Beilstein J Org Chem 2014; 10:2441-7. [PMID: 25383114 PMCID: PMC4222401 DOI: 10.3762/bjoc.10.254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/08/2014] [Indexed: 12/26/2022] Open
Abstract
A convenient CuI/L-proline-catalyzed, two-step one-pot method has been developed for the preparation of indolo[1,2-a]quinazoline derivatives using a sequential Ullmann-type C–C and C–N coupling. This protocol provides an operationally simple and rapid strategy for preparing indolo[1,2-a]quinazoline derivatives and displays good functional group tolerance. All the starting materials are commercial available or can be easily prepared.
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Affiliation(s)
- Chunpu Li
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China ; CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Lei Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Shuangjie Shu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Hong Liu
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China ; CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
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33
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Jalal S, Bera K, Sarkar S, Paul K, Jana U. Efficient synthesis of functionalized dihydroquinolines, quinolines and dihydrobenzo[b]azepine via an iron(iii) chloride-catalyzed intramolecular alkyne–carbonyl metathesis of alkyne tethered 2-amino benzaldehyde/acetophenone derivatives. Org Biomol Chem 2014; 12:1759-70. [DOI: 10.1039/c3ob42292e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron-catalyzed synthesis of dihydroquinolines, quinolines and dihydrobenzo[b]azepine.
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Affiliation(s)
- Swapnadeep Jalal
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032, India
| | - Krishnendu Bera
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032, India
| | - Soumen Sarkar
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032, India
| | - Kartick Paul
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032, India
| | - Umasish Jana
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032, India
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34
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Moss TA. Rapid entry into heterocycle-fused benzylic azepines and azocines via directed metallation/ring-closing metathesis. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Iqbal N, Fiksdahl A. Gold(I)-Catalyzed Benz[c]azepin-4-ol Synthesis by Intermolecular [5 + 2] Cycloaddition. J Org Chem 2013; 78:7885-95. [DOI: 10.1021/jo401075n] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Naseem Iqbal
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Anne Fiksdahl
- Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
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36
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37
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Ye KY, Dai LX, You SL. Enantioselective synthesis of 2,5-dihydrobenzo[b]azepine derivatives via iridium-catalyzed asymmetric allylic amination with 2-allylanilines and ring-closing-metathesis reaction. Org Biomol Chem 2012; 10:5932-9. [PMID: 22441972 DOI: 10.1039/c2ob00036a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Iridium-catalyzed asymmetric allylic amination of allylic carbonates with 2-allylanilines was realized. With a catalyst generated from 2 mol% of [Ir(dbcot)Cl](2) (dbcot = dibenzo[a,e]cyclooctatetraene) and 4 mol% of phosphoramidite ligand (L3), the amination products were obtained in up to 99% yield and 99% ee. Subjecting amination products to trifluoroacetyl protection and ring-closing-metathesis reaction provided an efficient synthesis of enantioenriched 2,5-dihydrobenzo[b]azepine derivatives.
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Affiliation(s)
- Ke-Yin Ye
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling, Shanghai, 200032, PR China
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38
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So M, Kotake T, Matsuura K, Inui M, Kamimura A. Concise Synthesis of 2-Benzazepine Derivatives and Their Biological Activity. J Org Chem 2012; 77:4017-28. [PMID: 22463127 DOI: 10.1021/jo300380z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masahiro So
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Tomoko Kotake
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Kenji Matsuura
- Department of Pharmacology,
Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Makoto Inui
- Department of Pharmacology,
Graduate School of Medicine, Yamaguchi University, Ube 755-8505, Japan
| | - Akio Kamimura
- Department of Applied Molecular
Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
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39
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Seashore‐Ludlow B, Danielsson J, Somfai P. Domino Carbopalladation‐Carbonylation: Investigation of Substrate Scope. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100678] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Brinton Seashore‐Ludlow
- Organic Chemistry, Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden, Fax: (+46)‐8‐791‐2233
| | - Jakob Danielsson
- Organic Chemistry, Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden, Fax: (+46)‐8‐791‐2233
| | - Peter Somfai
- Organic Chemistry, Chemical Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden, Fax: (+46)‐8‐791‐2233
- Section for Organic Chemistry, Institute of Technology, University of Tartu, 50411 Tartu, Estonia
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40
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41
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Ye KY, He H, Liu WB, Dai LX, Helmchen G, You SL. Iridium-Catalyzed Allylic Vinylation and Asymmetric Allylic Amination Reactions with o-Aminostyrenes. J Am Chem Soc 2011; 133:19006-14. [DOI: 10.1021/ja2092954] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ke-Yin Ye
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Hu He
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Bo Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Li-Xin Dai
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Günter Helmchen
- Organisch-Chemisches Institut der Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Shu-Li You
- 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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42
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Okamoto N, Miwa Y, Minami H, Takeda K, Yanada R. Regio- and Stereoselective Multisubstituted Enol Ester Synthesis. J Org Chem 2011; 76:9133-8. [DOI: 10.1021/jo201609r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noriko Okamoto
- Faculty of
Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai,
Kure, Hiroshima 737-0112, Japan
- Department of Synthetic Organic
Chemistry, Graduate School of Medical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553,
Japan
| | - Yoshihisa Miwa
- Faculty of
Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai,
Kure, Hiroshima 737-0112, Japan
| | - Hideki Minami
- Faculty of
Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai,
Kure, Hiroshima 737-0112, Japan
| | - Kei Takeda
- Department of Synthetic Organic
Chemistry, Graduate School of Medical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553,
Japan
| | - Reiko Yanada
- Faculty of
Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai,
Kure, Hiroshima 737-0112, Japan
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43
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Kothandaraman P, Huang C, Susanti D, Rao W, Chan PWH. Cyclopropyl Carbinol Rearrangement for Benzo-Fused Nitrogen Ring Synthesis. Chemistry 2011; 17:10081-8. [DOI: 10.1002/chem.201101363] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Indexed: 11/07/2022]
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44
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Kotha S, Krishna NG, Halder S, Misra S. A synergistic approach to polycyclics via a strategic utilization of Claisen rearrangement and olefin metathesis. Org Biomol Chem 2011; 9:5597-624. [PMID: 21727970 DOI: 10.1039/c1ob05413a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Olefin metathesis promoted by a well-defined metal carbene complex has evolved into an efficient method for the construction of a broad range of carbocyclic and heterocyclic rings of varying size. The synthetic potential of the olefin metathesis has been further increased by combining various other C-C bond forming processes either in tandem or in sequence. Herein, application of Claisen rearrangement and olefin metathesis to prepare various intricate and/or biologically important targets has been described.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai, India.
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45
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Pluempanupat W, Abraham M, Brecker L, Wolschann P, Karpfen A, Arion VB, Widhalm M. Synthesis and Conformation of Chiral Biheteroaryls. J Org Chem 2011; 76:3222-30. [DOI: 10.1021/jo200089p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wanchai Pluempanupat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Wien, Austria
| | - Michael Abraham
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Wien, Austria
| | - Lothar Brecker
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Wien, Austria
| | - Peter Wolschann
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 17, A-1090 Wien, Austria
| | - Alfred Karpfen
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 17, A-1090 Wien, Austria
| | - Vladimir B. Arion
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Wien, Austria
| | - Michael Widhalm
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Wien, Austria
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46
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Kyne RE, Ryan MC, Kliman LT, Morken JP. Allylation of nitrosobenzene with pinacol allylboronates. A regioselective complement to peroxide oxidation. Org Lett 2010; 12:3796-9. [PMID: 20687578 DOI: 10.1021/ol101472k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Addition of nitrosobenzene to pinacol allylboronates leads to oxidation of the organoboron with concomitant rearrangement of the substrate alkene. This reaction appears to proceed by allylboration of the nitroso group in analogy to carbonyl and imine allylation reactions. Remarkably, the N-O bond is cleaved during the reaction such that simple alcohols are the final reaction product.
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Affiliation(s)
- Robert E Kyne
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
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47
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He H, Liu WB, Dai LX, You SL. Enantioselective Synthesis of 2,3-Dihydro-1H-benzo[b]azepines: Iridium-Catalyzed Tandem Allylic Vinylation/Amination Reaction. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906638] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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He H, Liu WB, Dai LX, You SL. Enantioselective Synthesis of 2,3-Dihydro-1H-benzo[b]azepines: Iridium-Catalyzed Tandem Allylic Vinylation/Amination Reaction. Angew Chem Int Ed Engl 2010; 49:1496-9. [DOI: 10.1002/anie.200906638] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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50
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Cant A, Bertrand G, Henderson J, Roberts L, Greaney M. The Benzyne Aza-Claisen Reaction. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901410] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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