The synthesis of α-acetoxy sulfides and their lewis acid-mediated reactions
作者:George A. Kraus、Hiroshi Maeda
DOI:10.1016/0040-4039(95)00349-h
日期:1995.4
α-Acetoxy sulfides can be conveniently prepared by the reaction of dithioacetals with mercuric acetate at ambient temperature. They react with allyltrimethylsilane, enol silyl ethers, and cyanotrimethylsilane in the presence of SnCl4 to afford butenyl sulfides, γ-keto sulfides and α-cyano sulfides, respectively.
Alkenyl, aryl or allylic selenides smoothly couple with Grignardreagents in the presence of Ni(II)-phosphine complexes as catalysts to afford the corresponding unsaturated compounds in good yields. The reactivity order of coupling reaction with BuMgBr catalyzed by NiCl2 [Ph2PCH2CH2CH2PPh2] was found to be PhSeMe « PhCl > PhSMe by the competitive reactions.
TITANIUM TETRACHLORIDE PROMOTED REDUCTION OF ALKENYL SULFIDES USING TRIETHYLSILANE AS A REDUCING AGENT
作者:Takeshi Takeda、Toshio Tsuchida、Tooru Fujiwara
DOI:10.1246/cl.1984.1219
日期:1984.7.5
Alkenyl sulfides were reduced to the corresponding alkyl sulfides with triethylsilane in the presence of titanium tetrachloride in good yields. The reduction proceeds via -phenylthioalkyltitanium i...
A CONVENIENT METHOD FOR THE PREPARATION OF VINYL SULFIDES FROM CARBONYL COMPOUNDS BY USING TiCl<sub>4</sub>
作者:Teruaki Mukaiyama、Kazuhiko Saigo
DOI:10.1246/cl.1973.479
日期:1973.5.5
as deoxybenzoin, propiophenone, phenylacetone, benzylacetone, cyclohexanone and 2-methylcyclohexanone, and aldehyde such as 3-phenylpropionaldehyde were smoothly converted to the corresponding vinylsulfides in good yields by the treatments with thiols in the presence of TiCl4.