A compound of the formula: ##STR1## which is useful as a herbicide, is effectively produced by reacting a compound of the formula: ##STR2## 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: ##STR3##
化学式为:##STR1##的化合物可作为
除草剂使用,通过将
化学式为:##STR2##的化合物与
硫酸二甲酯在由
水和疏
水有机溶剂组成的两相反应介质中,在相转移催化剂的存在下有效地生产,或者通过
化学式为:##STR3##的新型中间体进行生产。