One-pot synthesis of pentafluorophenyl or chlorotetrafluorophenyl halogenoallenes
摘要:
The consecutive reaction of phosphonium salt (1) with n-butyllithium, hexafluorobenzene or chloropentafluorobezene, halogen acyl halide and triethylamine gives pentafluorophenyl or chlorotetrafluorophenyl halogenoallenes in 63-93% yields. (C) 1999 Elsevier Science S.A. All rights reserved.