Synthesis of 2, 3-Unsaturated δ-Valerolactones from Carboxylic Acids and Allylic Ketones

Abstract

3-Allyl-3-hydroxy acids were prepared from the reaction of allylic ketones and carboxylic acids using lithium naphthalenide in the presence of diethylamine. From the reaction of 3-allyl-3-hydroxy acids using sulfuric acid, 2, 3-unsaturated 2, 3-disubstituted-5-methyl-δ-valerolactones were obtained.