Solvolysis of 2-aryl-3-(trimethylsilyl)propyl tosylate revealed the competitive assistances of the β-aryl and β-(trimethylsilyl)methyl groups. It is found out that the enhanced reactivity by the percaudal interaction of trimethylsilylmethyl group is comparable with that by π-participation of β-phenyl group, and is extraordinarily larger than that by σ-participation of the alkyl group.
2-芳基-3-(三甲基甲
硅烷基)丙基甲
苯磺酸盐的溶剂分解显示了β-芳基和β-(三甲基甲
硅烷基)甲基的竞争性辅助。发现通过三甲基甲
硅烷基甲基的尾端相互作用增强的反应性与通过β-苯基的π-参与的增强的反应性相当,并且比通过烷基的σ-参与的增强的反应性大。