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Tanaka J, Shibata Y, Joseph A, Nogami J, Terasawa J, Yoshimura R, Tanaka K. Rhodium-Catalyzed ortho-Bromination of O-Phenyl Carbamates Accelerated by a Secondary Amide-Pendant Cyclopentadienyl Ligand. Chemistry 2020; 26:5774-5779. [PMID: 31950561 DOI: 10.1002/chem.202000253] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 12/13/2022]
Abstract
It has been established that a newly developed cyclopentadienyl rhodium(III) [CpA RhIII ] complex, bearing an acidic secondary amide moiety on the Cp ring, is able to catalyze the ortho-bromination of O-phenyl carbamates with N-bromosuccinimide (NBS) at room temperature. The presence of the acidic secondary amide moiety on the CpA ligand accelerates the bromination by the hydrogen bond between the acidic NH group of the CpA ligand and the carbonyl group of NBS.
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Affiliation(s)
- Jin Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Anton Joseph
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Jyunichi Terasawa
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ryo Yoshimura
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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Du X, Hou H, Zhao Y, Sheng S, Chen J. Rhodium(III)-Catalyzed Alkynylation of 4-Arylphthalazin-1(2 H
)-one Scaffolds via C-H Bond Activation. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xuxin Du
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education and College of Chemistry & Chemical Engineering; Jiangxi Normal University; 330022 Nanchang P. R. China
| | - Hongcen Hou
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education and College of Chemistry & Chemical Engineering; Jiangxi Normal University; 330022 Nanchang P. R. China
| | - Yongli Zhao
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education and College of Chemistry & Chemical Engineering; Jiangxi Normal University; 330022 Nanchang P. R. China
| | - Shouri Sheng
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education and College of Chemistry & Chemical Engineering; Jiangxi Normal University; 330022 Nanchang P. R. China
| | - Junmin Chen
- Key Laboratory of Functional Small Organic Molecules; Ministry of Education and College of Chemistry & Chemical Engineering; Jiangxi Normal University; 330022 Nanchang P. R. China
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3
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Geng K, Fan Z, Zhang A. Rhodium-catalyzed oxidative coupling of N-acyl anilines with alkynes using an acylamino moiety as the traceless directing group. Org Chem Front 2016. [DOI: 10.1039/c5qo00387c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium-catalyzed oxidative annulation of N-acyl anilines with alkynes was developed by using the acylamino group as a traceless directing group for the first time.
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Affiliation(s)
- Kaijun Geng
- CAS Key Laboratory of Receptor Research
- and Synthetic Organic & Medicinal Chemistry Laboratory (SOMCL)
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
| | - Zhoulong Fan
- CAS Key Laboratory of Receptor Research
- and Synthetic Organic & Medicinal Chemistry Laboratory (SOMCL)
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
| | - Ao Zhang
- CAS Key Laboratory of Receptor Research
- and Synthetic Organic & Medicinal Chemistry Laboratory (SOMCL)
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
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