40748-90-1
4-hydroxythiophene-2-carboxylic acid
+
77-78-1
硫酸二甲酯
→
~93%
5118-05-8
methyl 4-methoxythiophene-2-carboxylate
67-56-1
甲醇
62224-16-2
4-溴噻吩-2-甲酸甲酯
186581-53-3
重氮甲烷
77133-27-8
16694-18-1
4-溴噻吩-2-甲酸
6324-10-3
4,5-二溴噻吩-2-甲酸