Efficent Synthesis of 5-(1-Phenyl-3-phenylprop-2-ynyl)-2,2-pentylidene-1,3-dioxane-4,6-dione Derivatives

Abstract

A convenient and efficient approach for the synthesis of 5-(1-phenyl-3-phenylprop-2-ynyl)-2,2-pentylidene-1,3dioxane-4,6-dione derivatives through a three-component reaction of aldehydes with 2,2-pentylidene-1,3-dioxane-4,6-dione and arylacetylene in the presence of Cu(OAc) 2 •H 2 O/Cu is described with 12 examples. The reaction tolerates a wide range of aldehydes furnishing the products with good to excellent isolated yields (65%～88%). Additionally, the synthetic protocol has the advantages of wild conditions, simple operation, and excessive copper reused.