Fluorinated vinyl carbamates and carbamoyloxy allylsilanes. α-Metalation, organolithium addition-elimination, and fluoride. Mediated electrophilic reactivity patterns
摘要:
LiTMP or LDA-mediated in situ generation of alpha-lithio difluorovinyl carbamate 1b allows the preparation of silylated derivatives 4a and 2b which undergo organolithium addition-elimination and fluoride-mediated condensation reactions respectively to give new functionalized organofluorine derivatives 5a-d (Table 2) and 11a-c (Table 3).
Fluorinated vinyl carbamates and carbamoyloxy allylsilanes. α-Metalation, organolithium addition-elimination, and fluoride. Mediated electrophilic reactivity patterns
摘要:
LiTMP or LDA-mediated in situ generation of alpha-lithio difluorovinyl carbamate 1b allows the preparation of silylated derivatives 4a and 2b which undergo organolithium addition-elimination and fluoride-mediated condensation reactions respectively to give new functionalized organofluorine derivatives 5a-d (Table 2) and 11a-c (Table 3).