Process for preparing dihalovinylcyclopropanecarboxylates

Details Process for preparing dihalovinylcyclopropanecarboxylates Process for preparing dihalovinylcyclopropanecarboxylates

1975-08-22

1987-07-21

Shippen, Michael L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 66, 549 77, 549 79, 549429, 549494, 549499, 558406, 560104, 560122, 560123, 560124, 560128, 560219, 562506, C07C 6974, C07C 6965

Patent

active

046819533

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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