623-50-7
乙醇酸乙酯
+
140-88-5
丙烯酸乙酯
→
~82%
89898-51-1
4-氧代四氢呋喃-3-羧酸乙酯
848398-41-4
2,4-dichloro-5,7-dihydrofuro[3,4-d]pyrimidine