A compound of the formula:
which is useful as a herbicide, is effectively produced by reacting a compound of the formula:
with dimethyl sulfate in a two phase reaction medium consisting of water and a hydrophobic organic solvent in the presence of a phase transfer catalyst, or produced through a novel intermediate of the formula:
一种可用作
除草剂的式
在由
水和疏
水性有机溶剂组成的两相反应介质中,在相转移催化剂存在下,通过式
与
硫酸二甲酯在由
水和疏
水性有机溶剂组成的两相反应介质中,在相转移催化剂存在下进行反应,或通过一种新型的式中间体生成: