申请人:ICI Americas Inc.
公开号:US05053516A1
公开(公告)日:1991-10-01
3-Methyl-2-alkylamino-1-halo-1-cyano cyclobutanes are cleaved under acid conditions to form 2-halo-4-formylvaleronitrile and 4-formyl-2-pentenonitrile which can be cyclized to form 2-substituted-5-methylpyridine derivatives. These pyridine derivatives are useful as starting materials in the manufacture of herbicides such as fluazifop-butyl.
3-甲基-2-烷基胺基-1-卤代-1-氰基环丁烷在酸性条件下被裂解,形成2-卤代-4-甲酰基戊腈和4-甲酰基-2-戊烯腈,可以通过环化反应形成2-取代-5-甲基吡啶衍生物。这些吡啶衍生物可作为制造除草剂如氟草酯丁酯的起始材料。