18692-77-8
4-羟基-7-甲基香豆素
+
64-17-5
乙醇
→
~74%
75590-53-3
4-ethoxy-7-methylchromen-2-one
~70%
861537-63-5
4-bromo-7-methyl-2H-chromen-2-one
141-52-6
乙醇钠
75-03-6
碘乙烷