1
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Preethalayam P, Jijy E, Prakash P, Chand Sarngadharan S, Vijayan A, Radhakrishnan KV, John J. Diazanorbornene: A Valuable Synthon towards Carbocycles and Heterocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - E. Jijy
- Department of Chemistry MES College 685553 Nedumkandam, Chembalam PO Kerala, Idukki India
| | - Praveen Prakash
- Department of Chemistry Sree Narayana College 691001 Kollam Kerala India
| | - Sarath Chand Sarngadharan
- School of Chemistry and Biochemistry Georgia Institute of Technology 901 Atlantic Drive 30332 Atlanta Georgia United States
| | - Ajesh Vijayan
- Department of Chemistry CHRIST (Deemed to be University) Hosur road 560029 Bengaluru India
| | - K. V. Radhakrishnan
- CSIR ‐ National Institute for Interdisciplinary Science and Technology 695019 Thiruvananthapuram India
| | - Jubi John
- CSIR ‐ National Institute for Interdisciplinary Science and Technology 695019 Thiruvananthapuram India
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2
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Xu F, Zhu WJ, Wang J, Ma Q, Shen LJ. Rhodium-catalyzed synthesis of substituted isoquinolones via a selective decarbonylation/alkyne insertion cascade of phthalimides. Org Biomol Chem 2020; 18:8219-8223. [PMID: 33043915 DOI: 10.1039/d0ob01793k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A rhodium-catalyzed decarbonylation/alkyne insertion cascade of phthalimides has been established. The reaction can be carried out in an operationally simple manner and provides expedient access to a series of isoquinolones in moderate to good yields. This reaction proceeded through a sequential decarbonylation/alkyne insertion/intramolecular annulation procedure and featured good functional group tolerance, ample substrate scope, and the construction of C-C and C-N bonds in one pot.
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Affiliation(s)
- Fen Xu
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China
| | - Wen-Jing Zhu
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China
| | - Juan Wang
- Henan Ecological and Environmental Monitoring Center, Zhengzhou 450002, P. R. China
| | - Qi Ma
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China
| | - Li-Jing Shen
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, P. R. China
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3
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Gujjarappa R, Vodnala N, Malakar CC. Comprehensive Strategies for the Synthesis of Isoquinolines: Progress Since 2008. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000658] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Nagaraju Vodnala
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
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4
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Santhoshkumar R, Cheng CH. Reaching Green: Heterocycle Synthesis by Transition Metal-Catalyzed C-H Functionalization in Sustainable Medium. Chemistry 2019; 25:9366-9384. [PMID: 31116458 DOI: 10.1002/chem.201901026] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/26/2019] [Indexed: 01/18/2023]
Abstract
Catalytic C-H functionalization has emerged as an efficient alternative to traditional coupling reactions. However, some of these reactions depend on environmentally harmful solvents, weakening the overall green nature of these methods. As organic processes consume large amount of solvents, the use of less harmful solvents enhance the sustainability of these reactions. Herein, we present an overview of transition metal-catalyzed C-H functionalization reactions for the synthesis of heterocycles in sustainable solvents based on CHEM21 solvent selection guide.
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Affiliation(s)
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
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5
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Chen AY, Lu Q, Fu Y, Sarpong R, Stoltz BM, Zhang H. Isocanthine Synthesis via Rh(III)-Catalyzed Intramolecular C-H Functionalization. J Org Chem 2017; 83:330-337. [PMID: 29182872 DOI: 10.1021/acs.joc.7b02731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient synthesis of substituted isocanthines has been achieved using an intramolecular Rh(III)-catalyzed C-H functionalization of alkyne-tethered indoles in the presence of catalytic tris(acetonitrile)pentamethylcyclopentadienylrhodium(III) hexafluoroantimonate and stoichiometric copper(II) acetate. This isocanthine synthesis tolerates a variety of electronically diverse 5- or 6-substituted indoles with N-tethered alkyne coupling partners and can also be extended to pyrrole derivatives for the synthesis of annulated 5-azaindoles.
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Affiliation(s)
- Anthony Y Chen
- Department of Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States.,Department of Chemistry, University of California , Berkeley, California 94720, United States.,Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Qianqian Lu
- Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yao Fu
- Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Richmond Sarpong
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - Brian M Stoltz
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Haiming Zhang
- Department of Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
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6
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Vijayan A, Jumaila CU, Radhakrishnan KV. Rhodium(III)-Catalyzed C−H Activation of O
-Acetyl Ketoximes/N
-Methoxybenzamides toward the Synthesis of Isoquinoline/Isoquinolone-Fused Bicycles. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700377] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ajesh Vijayan
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST; Thiruvananthapuram 695019 India
- Organic chemistry section; CSIR-National Institute for Interdisciplinary Science and Technology; Thiruvananthapuram 695019 India
| | - Choorappulan Ummu Jumaila
- Organic chemistry section; CSIR-National Institute for Interdisciplinary Science and Technology; Thiruvananthapuram 695019 India
| | - Kokkuvayil Vasu Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST; Thiruvananthapuram 695019 India
- Organic chemistry section; CSIR-National Institute for Interdisciplinary Science and Technology; Thiruvananthapuram 695019 India
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7
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Santhini PV, Nimisha G, John J, Suresh E, Varma RL, Radhakrishnan KV. Pd-Catalyzed oxidative annulation of enamides with diazabicyclic olefins: rapid access to cyclopentene fused 2-pyrrolines. Chem Commun (Camb) 2017; 53:1848-1851. [DOI: 10.1039/c6cc08753a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A catalytic tandem transformation via C–H activation of enamides for the stereoselective synthesis of cyclopentene fused 2-pyrrolines has been realized.
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Affiliation(s)
- P. V. Santhini
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - G. Nimisha
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - Jubi John
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - E. Suresh
- Central Salt and Marine Chemicals Research Institute
- Bhavnagar 364 002
- India
| | - R. Luxmi Varma
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
| | - K. V. Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi 110001
- India
- Organic Chemistry Section
- CSIR-National Institute for Interdisciplinary Science and Technology
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8
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An easy access to fused chromanones via rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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9
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Vijayan A, Baiju T, Varughese S, Radhakrishnan K. Transition metal free intramolecular approach for the synthesis of cyclopenta[ b ]chromene derivatives from phenol substituted fulvene derived azabicyclic olefins. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Rhodium(III)-catalyzed coupling of aromatic ketazines or oximes with 2-vinyloxirane via C–H activation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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