12-Substituted-12H-dibenzo(D,G)(1,3)dioxocin-6-carboxylic acids, herbicidal compositions, and a method of controlling undesirable vegetation
申请人:DowElanco
公开号:EP0403026A1
公开(公告)日:1990-12-19
Dibenzo[d,g][1,3]dioxocin-6-carboxylic acids substituted by methyl or ethyl or a moiety -CH₂CH₂- at the 12-position and optionally substituted at other positions, such as methyl 4′-chlorospiro(cyclopropane-1,12′(12′H)-dibenzo[d,g][1,3]dioxocin)-6′-carboxylic acid, and their agriculturally acceptable esters, amides, and salts are useful for the control of undesirable vegetation. The 1,1-diarylcyclopropane intermediates required for the spirocyclopropane compounds can be prepared from appropriately substituted 1,1-diarylethene procursors by reaction with phenylthiomethyl lithium reagent.
二苯并[d,g][1,3]二氧杂环辛-6-羧酸,在 12 位被甲基或乙基或分子-CH₂CH₂-取代,并可选择在其他位置被取代,例如甲基 4′-氯螺(环丙烷-1、12′(12′H)-二苯并[d,g][1,3]二氧杂环辛)-6′-羧酸及其农业上可接受的酯、酰胺和盐类可用于控制不良植被。螺环丙烷化合物所需的 1,1-二芳基环丙烷中间体可通过与苯硫甲基锂试剂反应,从适当取代的 1,1-二芳基烯原体中制备。