Studies on Acetylenic Compounds. LVIII. Reaction of 2-Propynyl Sulfones with Methyl Acrylate

Abstract

Three 2-propynyl sulfones (VIIIa-c) reacted with methyl acrylate to give the corresponding 2-carbomethoxy-4-ethynyl-4-arylsulfonylcyclohexanones (IXa-c), respectively. Nucleophilic reaction of acetylenic sulfonyl carbanion showed ambident character depending on the nature of electrophiles which were classified into two kinds. Some discussions of the reaction and physical properties of the products are presented.