Reaction of Vinylphosphonium Salts with Sulfoxonium Ylides. Synthesis of Cyclopropylphosphonium Salts

Article abstract of DOI:10.1246/bcsj.68.2313

Reactions of (dimethylamino)phenylsulfoxonium mathylide with triphenylvinylphosphonium salts gave the corresponding cyclopropyltriphenylphosphonium salts (E-form) in high yields, when 1,8-diazabicyclo<5.4.0>undec-7-ene was used as a base.Reactions of cyclopropyltriphenylphosphonium salts with sodium hydride in the presence of tris<2-(2-methoxyethoxy)ethyl>amine afforded the corresponding ylides, which further reacted with aldehydes to give alkylidenepropanes in high yields.