Peng Chu-he
2012
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Journal
Fine Chemical Intermediates
Abstract
3,3-Dimethyl-4-pentenoic acid methyl ester is an important intermediate for the synthesis of pyrethroids pesticides.It can be prepared using 3-methyl-2-buten-1-ol and trimethyl orthoacetate as the starting materials,through Claisen rearrangement and transesterification reaction(Sagami method).This method was improved for industrial production and the product was obtained in 85.5% yield with purity of 99.2%.