ethyl 5-(3,4-dimethoxy-5-nitrophenyl)-4-oxazolecarboxylate 、
氢溴酸 在
氢溴酸 、 Acetone ethanol 作用下,
反应 2.0h,
以There is obtained 2-amino-3',4'-dihydroxy-5'-nitroacetophenone hydrobromide in the form of yellow crystals of m.p. >250° (dec.)的产率得到2-amino-3',4'-dihydroxy-5'-nitroacetophenone hydrobromide