A palladium-catalyzed reaction of aryl halides, potassium metabisulfite, and hydrazines
作者:Shengqing Ye、Jie Wu
DOI:10.1039/c2cc34957d
日期:——
Aryl N-aminosulfonamides could be easily produced via a palladium-catalyzed coupling of aryl halides, potassium metabisulfite, and hydrazines. Potassium metabisulfite is an excellent equivalent of sulfur dioxide in the reaction of palladium-catalyzed aminosulfonylation.
Practical synthesis and biological screening of sulfonyl hydrazides
作者:João Macara、Catarina Caldeira、José Cunha、Jaime A. S. Coelho、Maria J. S. A. Silva、Konrad Krämer、Christoph W. Grathwol、Stefan Bräse、M. Manuel B. Marques
DOI:10.1039/d2ob02160a
日期:——
synthesis of sulfonyl hydrazides mediated by hypervalent iodine is described. Taking advantage of the umpolung properties of hypervalent iodine reagents, the polarity of sodium sulfinate salts is reversed, and a key intermediate is generated and reacted with mono- and disubstituted hydrazines. To highlight the practical utility of this protocol, a diverse range of sulfonyl hydrazides were synthesized in
Palladium-Catalyzed Aminosulfonylation of Aryl Halides
作者:Bao Nguyen、Edward J. Emmett、Michael C. Willis
DOI:10.1021/ja1081124
日期:2010.11.24
The palladium-catalyzed three-component coupling of aryl iodides, sulfur dioxide, and hydrazines to deliver aryl N-aminosulfonamides is described. The colorless crystalline solid DABCO center dot(SO2)(2) was used as a convenient source of sulfur dioxide. The reaction tolerates significant variation of both the aryl iodide and hydrazine coupling partners.