67-56-1
甲醇
+
7300-93-8
1-(3-硝基苯基)-1H-吡咯-2,5-二酮
62456-03-5
pyridinium p-toluenesulfonylmethylide
→
~65%
74894-62-5
(3E)-3-(methoxymethylidene)-1-(3-nitrophenyl)pyrrolidine-2,5-dione