This paper introduced a improved process to synthesize pendimethalin by nitration,O-alkylation and condensation from3,4-xylenol.This process avoided the formation of the toxic nitroso compounds.

• 本文介绍了以3,4-二甲基苯酚为原料,经过硝化反应、氧烷化反应、缩合反应制备除草剂二甲戊灵的一种新的制备工艺,该工艺避免了有毒的亚硝基化合物的形成。