WERKWIJZE VOOR DE BEREIDING VAN EEN DIHALOGEENVINYLCYCLOPROPAANCARBOXYLAAT.

摘要

Novel syntheses of dihalovinylcyclopropanecarboxylates, including potent insecticides, are described. The processes begin with the reaction between an alkenol and an orthoester to produce a gamma -unsaturated carboxylate, followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.