methyl 5-chloro-3-formyl-4-hydroxy-2-(5'-hydroxy-2'-methoxy-4'-methoxycarbonyl-3',6'-dimethylphenoxy)-6-methylbenzoate 在
三氯化硼 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以80%的产率得到methyl 5-chloro-2-(2',4'-dihydroxy-5'-methoxycarbonyl-3',6'-dimethylphenoxy)-3-formyl-4-hydroxy-6-methylbenzoate