Patent ID: 7351854
Filing Date: 2008-04-01
Classification: C07C

Abstract:
1. A method of manufacturing a 1-chloro-2-methyl-4-acyloxy-2-butene derivative having the following structure: wherein R comprising (1) reacting isoprene with at least one N-chloroisocyanuric acid derivative and water to obtain a mixture of 1-chloro-2-hydroxy-2-methyl-3-butylene and 1-chloro-4-hydroxy-2-methyl-2-butylene; (2) reacting the mixture obtained in step (1) under acidic conditions with an acid anhydride or an acyl halide to undergo esterification and rearrangement to yield the 1-chloro-2-methyl-4-acyloxy-2-butene derivative having the following structure: wherein R