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Your search keyword '"Wang, Sichang"' showing total 3 results
Start Over Author "Wang, Sichang" Journal tetrahedron letters: international organ for the rapid publication of preliminary communications in organic chemistry
3 results on '"Wang, Sichang"'

1. Synthesis of 3,3-disubstituted oxindoles from anilines nitrosated in situ: a radical-promoted reaction of aromatic amines with N-arylacrylamides.

Author

Ni, Zhangqin, Wang, Sichang, Huang, Xin, Wang, Jichao, and Pan, Yuanjiang

Subjects
*OXINDOLES, *SUBSTITUTION reactions, *ANILINE synthesis, *NITROSATION, *RADICALS (Chemistry), *AROMATIC amines
Abstract

A mild and efficient synthesis of 3,3-disubstituted oxindoles is achieved. The corresponding diazonium salts are generated in situ from aromatic amines before these salts undergo a homolytic bond cleavage to produce the aryl radicals. Various oxindoles are obtained by homolytic aromatic substitution and radical cyclization. This procedure is an alternative method to oxindole synthesis. [ABSTRACT FROM AUTHOR]

Published
2015
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2. A concise synthetic strategy to alkynyl sulfides via transition-metal-free catalyzed C–S coupling of 1,1-dibromo-1-alkenes with thiophenols

Author

Ni, Zhangqin, Wang, Sichang, Mao, Hui, and Pan, Yuanjiang

Subjects
*SULFIDE synthesis, *TRANSITION metal catalysts, *CHEMICAL bonds, *ALKENES, *PHENOLS, *METAL toxicology, *CARBON
Abstract

Abstract: A novel synthetic strategy to alkynyl sulfides via transition-metal-free catalyzed C–S coupling of 1,1-dibromo-1-alkenes with thiophenols has been developed. The new strategy which avoided the transition-metal toxicities is environmental friendly and very important for alkynyl sulfides synthesis. [Copyright &y& Elsevier]

Published
2012
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3. Pd(II)-catalyzed intramolecular C–H activation/C–C cross coupling for the synthesis of carbazoles from diaryl acetamides

Author

Wang, Sichang, Mao, Hui, Ni, Zhangqin, and Pan, Yuanjiang

Subjects
*PALLADIUM catalysts, *CARBAZOLE, *ACETAMIDE, *HETEROCYCLIC compounds synthesis, *FUNCTIONAL groups, *ACETANILIDES, *BENZENE
Abstract

Abstract: Pd(II)-catalyzed intramolecular C–H activation/C–C cross coupling within N,N-diphenyl-acetamides allows the efficient formation of differently substituted carbazoles. In this cross-dehydrogenative coupling, many different functional groups are tolerated and the starting material N,N-diphenyl-acetamides can be easily prepared in one step from commercially available acetanilides and iodobenzenes. [Copyright &y& Elsevier]

Published
2012
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