Intermediates in a process for preparing dihalovinylcyclopropane

Details Intermediates in a process for preparing dihalovinylcyclopropane Intermediates in a process for preparing dihalovinylcyclopropane

1982-12-03

1984-06-12

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560228, 560124, 424285, 424305, 549499, C07C 6963

Patent

active

044543433

ABSTRACT:
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.

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