Abstract Difluoro(phenylsulfanyl)methane (PhSCF2H) was found to undergo a reaction with aromatic compounds mediated by SnCl4, through a thionium intermediate characterized by NMR and TD-DFT analyses, leading to the formation of a mixture of S,S′-diphenyl dithioacetal and aromaticaldehyde which, after oxidative hydrolysis, provides the aromaticaldehyde in good to excellent yields. The salient feature
Indium tribromide-catalyzed chemoselective dithioacetalization of aldehydes in non-aqueous and aqueous media
作者:Marco Antonio Ceschi、Luciana de Araujo Felix、Clovis Peppe
DOI:10.1016/s0040-4039(00)01741-x
日期:2000.12
Indium tribromide efficiently catalyzes the chemoselective dithioacetalization of aldehydes in the presence of ketones in dichloromethane. The catalyst is also active in water, which can be reused, in the same pot, for several times without any decrease in the yield of reaction.