64-17-5
乙醇
+
134220-37-4
1-(3-氯-4-氟苯基)-吡咯-2,5-二酮
62456-03-5
pyridinium p-toluenesulfonylmethylide
→
~34%
74894-65-8
(3E)-1-(3-chloro-4-fluorophenyl)-3-(ethoxymethylidene)pyrrolidine-2,5-dione