Mixed organofluorine-organosilicon chemistry. 4. Perfluoroenoxysilanes: synthesis and reactivity
摘要:
1-Alkyl (or aryl)-1-[(trialkylsilyl)oxy]perfluoroalk-1-enes were synthesized from acylsilanes and perfluoroalkyl iodides. Perfluoroorganolithium and magnesium were used for aliphatic and aromatic derivatives, respectively. These enoxysilanes have nucleophilic as well as electrophilic properties. They are enolate equivalents, leading to 2-hydroperfluoroalkyl ketones on hydrolysis, or aldol products. With good nucleophiles like amines, they react as electron poor alkenes to give beta-enamino ketones.