2-Functionalized allyl tris(trimethylsilyl)silanes as radical-based allylating agents
作者:Chryssostomos Chatgilialoglu、Carla Ferreri、Marco Ballestri、Dennis P. Curran
DOI:10.1016/0040-4039(96)01354-8
日期:1996.8
Radical allylations with 2-functionalized allyl tris(trimethylsilyl)silanes occur under mild conditions in good to excellent yield provided that the radical precursor and the silane have the appropriate electronic pairing. These reactions offer tin-free altermatives for transformations that are currently conducted with allyl stannanes.
Synthesis of 2-functionalized allyl tris(trimethylsilyl)silanes
作者:Chryssostomos Chatgilialoglu、Marco Ballestri、Donatella Vecchi、Dennis P. Curran
DOI:10.1016/0040-4039(96)01353-6
日期:1996.8
Reactions of unsubstituted and 2-substituted allyl phenyl sulfides with tris(trimethylsilyl)silane provide the corresponding allyl tris(trimethylsilyl)silanes rapidly and in high yields while the related reactions with allyl phenyl sulfones occur more slowly and in moderate yields.
Effect of the “Supersilyl” Group on the Reactivities of Allylsilanes and Silyl Enol Ethers
作者:Hans A. Laub、Hisashi Yamamoto、Herbert Mayr
DOI:10.1021/ol102220e
日期:2010.11.19
Kinetics of the reactions of allylsilanes (1) and silyl enol ethers (2) with benzhydrylium ions (3) were studied by UV-vis spectroscopy in dichloromethane at 20 degrees C. The less than three times higher reaction rates of the tris(trimethylsilyl)silyl compounds in comparison to the corresponding trimethylsilyl compounds indicate that the previously reported strong electron-donating effect of the supersilyl group operates only in the a-position and not in the if-position.