Substitution reactions involving organoaluminum compounds. Communication 2. Synthesis of substituted allenes from propargyl acetates

Abstract

1. A new, convenient method for the preparation of allenes has been developed, based on the reaction of substituted propargyl acetates with organoaluminum compounds in the presence of transition metal salts or complexes. 2. The best results were obtained using trialkylalanes and tetraalkylaluminates. The most active catalysts were iron and palladium compounds.