Unprecedented Palladium-Catalyzed Cross-Coupling Reaction of α-Bromo Sulfoxides with Boronic Acids
作者:Nuria Rodríguez、Ana Cuenca、Carmen Ramírez de Arellano、Mercedes Medio-Simón、Gregorio Asensio
DOI:10.1021/ol034358m
日期:2003.5.1
[reaction: see text] A new Suzuki-type palladium-catalyzed reaction of boronic acids with alpha-bromo sulfoxides has been developed using a protocol similar to the well-documented reaction of boronic acids with aryl halides. Both cross-coupling and homocoupling processes were observed. The best yields in cross-coupling products were obtained when the presence of oxygen was carefully excluded using
Palladium-Catalyzed Reaction of Boronic Acids with Chiral and Racemic α-Bromo Sulfoxides
作者:Nuria Rodríguez、Ana Cuenca、Carmen Ramírez de Arellano、Mercedes Medio-Simón、Denissa Peine、Gregorio Asensio
DOI:10.1021/jo0487552
日期:2004.11.1
Palladium-catalyzed cross-coupling reactions of racemic α-bromo sulfoxides with boronic acids are carried out in either aqueous or nonaqueous medium with formation of a new C sp3−C sp2 bond. The arylation of chiral α-bromo sulfoxides occurs without racemization. The cross-coupling reaction is general and gives high yields with arylboronic acids substituted with either donor or acceptor groups but gives
Iron(II) Triflate as an Efficient Catalyst for the Imination of Sulfoxides
作者:Olga García Mancheño、Jonathan Dallimore、Andrew Plant、Carsten Bolm
DOI:10.1021/ol900660x
日期:2009.6.4
The challenging imination of benzyl-, sterically demanding alkyl-, and heteroaryl-substituted sulfoxides has been studied. Iron(II) triflate was identified as a highly efficient and robust catalyst for sulfur imination reactions. A variety of sulfoxides and sulfides were efficiently iminated with sulfonyliminoiodinanes (PhI═NSO2R) at room temperature to give the corresponding sulfoximines and sulfilimines