申请人:FMC Corporation
公开号:US04342694A1
公开(公告)日:1982-08-03
Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified. The halomethyl bicyclic lactone is a useful intermediate for the preparation of insecticidal cis-3-(2,2-dihaloethenyl)-2,2-dimethylcyclopropanecarboxylates or cis-3-(2-halo-2-trihalomethylethenyl)-2,2-dimethylcyclopropanecarboxylates .
本文描述和举例了从已知且廉价的起始材料中制备(1.alpha., 4.alpha., 5.alpha.)-6,6-二甲基-4-卤代取代甲基-3-氧杂双环[3.1.0]己烷-2-酮及其新型中间体的过程。卤代甲基双环内酯是制备杀虫剂顺式-3-(2,2-二卤乙烯基)-2,2-二甲基环丙烷羧酸酯或顺式-3-(2-卤-2-三卤甲基乙烯基)-2,2-二甲基环丙烷羧酸酯的有用中间体。