Gas Phase Basicities of α-Trimethylsilylstyrenes. Intrinsic Effect of α-Trimethylsilyl Group on the Stability of Carbenium Ions
作者:Masaaki Mishima、Toshifumi Ariga、Yuho Tsuno、Kazutoshi Ikenaga、Kiyoshi Kikukawa
DOI:10.1246/cl.1992.489
日期:1992.3
Gas phase basicities of α-trimethylsilylstyrenes have been determined by measuring proton transfer equilibrium constants. Basicity of α-trimethylsilylstyrene was found to be comparable to that of α-alkylstyrene, suggesting that α-trimethylsilyl group as well as α-alkyl group stabilizes a carbenium ion.
α-三甲基甲硅烷基苯乙烯的气相碱度已通过测量质子转移平衡常数来确定。发现α-三甲基甲硅烷基苯乙烯的碱性与α-烷基苯乙烯的碱性相当,表明α-三甲基甲硅烷基和α-烷基稳定了碳正离子。