Propargyl-Allenyl Isomerizations and Electrocyclizations for the Functionalization of Phosphonium Salts: One-Pot Synthesis of Polysubstituted Vinylbenzenes and Naphthalenes

摘要

Phosphonium salts are widely used in organic synthesis as the precursor of Wittig reagents but highly functionalized phosphonium salts are not readily available. We have developed a sequence of propargyl-allenyl isomerizations and electrocyclizations for the functionalization of phosphonium salts via simple starting materials, which may provide an efficient one-pot synthesis of polysubstituted vinyl-benzenes and naphthalenes.