A simple and practical method has been developed for the synthesis and characterization of several interesting classes of volatile organofluorine compounds from fluorophosphonium salts via their in situ generated corresponding ylides. The fluorinated phosphonium ylides react with hexafluoroacetone in DMF to generate perfluoroisobutylene, whereas in the presence of bromine or iodine containing electrophiles, tetrafluoroethylene, perfluoro-2-butene, perfluorocyclobutane, and 1H-heptafluoropropane are obtained.Key words: difluoromethylene phosphonium ylides, perfluoroisobutylene, tetrafluoroethylene, perfluorocyclobutane, 1H-heptafluoropropane.
已开发出一种简单实用的方法,用于通过在位生成的相应叶立德从
氟磷盐合成和表征几类有趣的挥发性
有机氟化合物。
氟磷叶立德与
DMF中的
六氟丙酮反应生成
全氟异丁烯,而在存在
溴或
碘含有亲电试剂的情况下,可以得到
四氟乙烯、
全氟-
2-丁烯、全
氟环丁烷和
1H-七氟丙烷。关键词:二
氟亚甲基
磷叶立德、
全氟异丁烯、
四氟乙烯、全
氟环丁烷、
1H-七氟丙烷。