7-(4-nitrophenoxy)-2,4,4-trimethyl-4H-1-benzopyran 、 甲醇 在
甲醇 作用下,
以
甲苯 为溶剂,
反应 4.5h,
以to give 6.7 g (90%) of the desired product as a white powder (melting point 125° C.)的产率得到2,3-dihydro-2-methoxy-7-(4-nitrophenoxy)-2,4,4-trimethyl-4H-1-benzopyran
参考文献:
名称:
Aromatic urea derivatives and their use as herbicide