作者:Nicolas Puljic、Matthias Albert、Anne-Lise Dhimane、Louis Fensterbank、Emmanuel Lacôte、Max Malacria
DOI:10.1002/hlca.200690213
日期:2006.10
The titanocene(III) chloride mediated opening of silyloxiranes has been examined. Electron transfer from the metal leads to α-silyl radicals with total regiocontrol. The radicals could be trapped by various olefins, and the corresponding adducts were obtained in good yields (Table). Further substitution of the oxirane by alkyl groups proved detrimental to the reactions, but ring opening remained essentially
已经检测了钛茂(III)氯化物介导的甲硅烷基氧杂环戊烷的打开。从金属的电子转移导致具有完全区域控制的α-甲硅烷基自由基。自由基可被各种烯烃捕获,并以高收率获得相应的加合物(表)。证明用烷基进一步取代环氧乙烷对反应是有害的,但是开环基本上保持区域选择性。