重氮甲烷 、 4-benzyloxy-5-chloro-2-(5'-hydroxy-2'-methoxy-4'-methoxycarbonyl-3',6'-dimethylphenoxy)-6-methylbenzoic acid 以
甲醇 、
乙醚 为溶剂,
反应 0.05h,
以90%的产率得到methyl 4-benzyloxy-5-chloro-2-(5'-hydroxy-2'-methoxy-4'-methoxycarbonyl-3',6'-dimethylphenoxy)-6-methylbenzoate