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Meng Y, Zhu W, Song Y, Bu G, Zhang L, Xu F. Rhodium(III)‐Catalyzed Oxidative Annulation of Amidines with Alkynes
via
Sequential C−H Bond Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yan‐Yu Meng
- Department of College of Science Henan Agricultural University Zhengzhou 450002 P. R. China
| | - Wen‐Jing Zhu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yuan‐Yuan Song
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Gang‐Gang Bu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Li‐Juan Zhang
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Fen Xu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
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2
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Krishnamurti V, Munoz SB, Ispizua-Rodriguez X, Vickerman J, Mathew T, Surya Prakash GK. C(sp 2)-H Trifluoromethylation of enamides using TMSCF 3: access to trifluoromethylated isoindolinones, isoquinolinones, 2-pyridinones and other heterocycles. Chem Commun (Camb) 2018; 54:10574-10577. [PMID: 30156224 DOI: 10.1039/c8cc04907f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A method for the direct C(sp2)-H trifluoromethylation of enamides, including biologically relevant isoindolinones, isoquinolinones and 2-pyridinones using TMSCF3 under oxidative conditions is presented. The protocol is convenient, operationally simple and exhibits high tolerance across a multitude of relevant handles and functional groups.
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Affiliation(s)
- Vinayak Krishnamurti
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA.
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3
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Ghosh K, Shankar M, Rit RK, Dubey G, Bharatam PV, Sahoo AK. Sulfoximine-Assisted One-Pot Unsymmetrical Multiple Annulation of Arenes: A Combined Experimental and Computational Study. J Org Chem 2018; 83:9667-9681. [PMID: 30063342 DOI: 10.1021/acs.joc.8b01077] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Discussed herein is an unprecedented Ru-catalyzed one-pot unsymmetrical C-H difunctionalization of arenes comprising intramolecular hydroarylation of olefins and intermolecular annulation of alkynes. This unprecedented 2-fold C-H functionalization is validated on the basis of experimental and density functional theory (DFT) study. The transformation readily occurs with the assistance of methylphenyl sulfoximine (MPS) directing group in the presence of Ru catalyst forming two C-C and one C-N bonds in a single operation. The overall process is atom economical and step-efficient and provides unusual dihydrofuran-fused isoquinolone heterocycles. Further annulation of NH and the proximal o-C-H-arene of isoquinolone with alkynes build highly conjugated novel polycyclic compounds. Overall, three independent annulations in arene motifs are visualized and thoughtfully executed; finally, 5 ring-fused structural entities are constructed forming three C-C and two C-N bonds.
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Affiliation(s)
- Koushik Ghosh
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Majji Shankar
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Raja K Rit
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Gurudutt Dubey
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , S.A.S. Nagar , Punjab , India
| | - Prasad V Bharatam
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research , S.A.S. Nagar , Punjab , India
| | - Akhila K Sahoo
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
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4
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Saini G, Kumar P, Kumar GS, Mangadan ARK, Kapur M. Palladium-Catalyzed α-Arylation of Silylenol Ethers in the Synthesis of Isoquinolines and Phenanthridines. Org Lett 2018; 20:441-444. [DOI: 10.1021/acs.orglett.7b03776] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Gaurav Saini
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, MP, India
| | - Pravin Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, MP, India
| | - Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, MP, India
| | - Arun Raj Kizhakkayil Mangadan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, MP, India
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5
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Tiwari VK, Kamal N, Kapur M. One Substrate, Two Modes of C–H Functionalization: A Metal-Controlled Site-Selectivity Switch in C–H Arylation Reactions. Org Lett 2016; 19:262-265. [DOI: 10.1021/acs.orglett.6b03558] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Virendra Kumar Tiwari
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Neha Kamal
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Manmohan Kapur
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
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6
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Shankar M, Ghosh K, Mukherjee K, Rit RK, Sahoo AK. Ru-Catalyzed One-Pot Diannulation of Heteroaryls: Direct Access to π-Conjugated Polycyclic Amides. Org Lett 2016; 18:6416-6419. [PMID: 27978646 DOI: 10.1021/acs.orglett.6b03314] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel Ru-catalyzed oxidative double annulation of heteroarenes with symmetrical and unsymmetrical alkynes is reported. A general method for the unsymmetrical annulation of heteroarenes with two distinct alkynes is showcased for the first time. Methylphenyl sulfoximine (MPS) plays an important role in the annulations of heteroarenes and allows the construction of structurally complex π-conjugated heteroarene-fused polycyclic amide skeletons via the formation of multiple C-C and C-N bonds in a single operation. The reaction exhibits excellent substrate scope and tolerates a wide range of functional groups.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Koushik Ghosh
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
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7
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Calder EDD, McGonagle FI, Harkiss AH, McGonagle GA, Sutherland A. Preparation of amino-substituted indenes and 1,4-dihydronaphthalenes using a one-pot multireaction approach: total synthesis of oxybenzo[c]phenanthridine alkaloids. J Org Chem 2014; 79:7633-48. [PMID: 25060853 DOI: 10.1021/jo5014492] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Allylic trichloroacetimidates bearing a 2-vinyl or 2-allylaryl group have been designed as substrates for a one-pot, two-step multi-bond-forming process leading to the general preparation of aminoindenes and amino-substituted 1,4-dihydronaphthalenes. The synthetic utility of the privileged structures formed from this one-pot process was demonstrated with the total synthesis of four oxybenzo[c]phenanthridine alkaloids, oxychelerythrine, oxysanguinarine, oxynitidine, and oxyavicine. An intramolecular biaryl Heck coupling reaction, catalyzed using the Hermann-Beller palladacycle was used to effect the key step during the synthesis of the natural products.
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Affiliation(s)
- Ewen D D Calder
- WestCHEM, School of Chemistry, The Joseph Black Building, University of Glasgow , Glasgow G12 8QQ, United Kingdom
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8
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De S, Mishra S, Kakde BN, Dey D, Bisai A. Expeditious Approach to Pyrrolophenanthridones, Phenanthridines, and Benzo[c]phenanthridines via Organocatalytic Direct Biaryl-Coupling Promoted by Potassium tert-Butoxide. J Org Chem 2013; 78:7823-44. [DOI: 10.1021/jo400890k] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Subhadip De
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal MP-462
023, India
| | - Sourabh Mishra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal MP-462
023, India
| | - Badrinath N. Kakde
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal MP-462
023, India
| | - Dhananjay Dey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal MP-462
023, India
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal MP-462
023, India
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9
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Synthesis of benzo[3,4]azepino[1,2-b]isoquinolin-9-ones from 3-arylisoquinolines via ring closing metathesis and evaluation of topoisomerase I inhibitory activity, cytotoxicity and docking study. Bioorg Med Chem 2011; 19:5311-20. [DOI: 10.1016/j.bmc.2011.08.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 08/03/2011] [Accepted: 08/03/2011] [Indexed: 11/21/2022]
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10
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Khadka DB, Cho WJ. 3-Arylisoquinolines as novel topoisomerase I inhibitors. Bioorg Med Chem 2011; 19:724-34. [DOI: 10.1016/j.bmc.2010.10.057] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 10/27/2010] [Accepted: 10/28/2010] [Indexed: 12/22/2022]
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11
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Le TN, Cho WJ. First Total Synthesis of the Phenolic 7,8-Dihydro-8-oxoprotoberberine Alkaloid, Cerasonine. Chem Pharm Bull (Tokyo) 2008; 56:1026-9. [DOI: 10.1248/cpb.56.1026] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Thanh Nguyen Le
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University
| | - Won-Jea Cho
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University
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