1394173-91-1
ethyl 2-acetoxy-4-(3-bromophenyl)-3-nitrobut-3-enoate
+
1576-35-8
对甲苯磺酰肼
→
~84%
1326811-82-8
5-(3-溴苯基)-1H-吡唑-3-羧酸乙酯