Abstract

This paper describes the synthesis of the novel phosphonato esters from the reaction of dialkyl acetylenedicarboxylates with the N–H acid (4-methylphenyl)sulfonyl hydrazide in the presence of trialkyl(aryl) phosphites at room temperature in excellent yields.

Keywords: (4-Methylphenyl)sulfonyl hydrazide, stereoselective synthesis, acetylenic esters, trialkyl(aryl) phosphites, phosphonates.