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Cheng F, Bai X, Sun QW, Zhu GF, Dong YX, Yang YY, Gao XL, Guo B, Tang L, Zhang JQ. Cobalt-promoted synthesis of sulfurated oxindoles via radical annulation of N-arylacrylamides with disulfides. Org Biomol Chem 2022; 20:6423-6431. [PMID: 35880643 DOI: 10.1039/d2ob00877g] [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
An efficient radical annulation of N-arylacrylamides with disulfides is developed for the synthesis of sulfurated oxindoles. The reaction occurs in a facile manner using CoBr2 as both an initiator and a promoter for the first time and (NH4)2S2O8 as the oxidant. By controlling the CoBr2/(NH4)2S2O8 ratio, a wide range of sulfurated and brominated/sulfurated oxindoles are selectively prepared in good to excellent yields. The present protocol is simple and highly atom economical, and can tolerate a broad range of substrates.
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Affiliation(s)
- Fei Cheng
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Xue Bai
- Pharmacy Department of Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - Qi-Wen Sun
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Gao-Feng Zhu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Yong-Xi Dong
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Yuan-Yong Yang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Xiu-Li Gao
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang 550025, China
| | - Lei Tang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
| | - Ji-Quan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang, 550025, China.
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Chandra D, Manisha, Sharma U. Recent Advances in the High-Valent Cobalt-Catalyzed C-H Functionalization of N-Heterocycles. CHEM REC 2021; 22:e202100271. [PMID: 34932274 DOI: 10.1002/tcr.202100271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/21/2021] [Indexed: 12/18/2022]
Abstract
Direct functionalization of heterocycles using C-H activation widely relies on the precious metal complexes. In past decade, the use of earth abundant and inexpensive transition metal to functionalize heterocycles has become an attractive alternate strategy. This concept is also interesting due to the unique reactivity pattern of these inexpensive metals. In this context we and other research groups have utilized the high-valent cobalt complexes as an inexpensive and readily available catalyst for the functionalization of heterocycles. In this review, we intend to brief recent progress made in the area of high-valent cobalt complexes catalyzed C-H functionalization of N-containing heterocycles.
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Affiliation(s)
- Devesh Chandra
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manisha
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Upendra Sharma
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Lukasevics L, Cizikovs A, Grigorjeva L. C-H bond functionalization by high-valent cobalt catalysis: current progress, challenges and future perspectives. Chem Commun (Camb) 2021; 57:10827-10841. [PMID: 34570134 DOI: 10.1039/d1cc04382j] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Over the last decade, high-valent cobalt catalysis has earned a place in the spotlight as a valuable tool for C-H activation and functionalization. Since the discovery of its unique reactivity, more and more attention has been directed towards the utilization of cobalt as an alternative to noble metal catalysts. In particular, Cp*Co(III) complexes, as well as simple Co(II) and Co(III) salts in combination with bidentate chelation assistance, have been extensively used for the development of novel transformations. In this review, we have demonstrated the existing trends in the C-H functionalization methodology using high-valent cobalt catalysis and highlighted the main challenges to overcome, as well as perspective directions, which need to be further developed in the future.
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Affiliation(s)
- Lukass Lukasevics
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
| | - Aleksandrs Cizikovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
| | - Liene Grigorjeva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
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