487-51-4
2-甲基-4-羰基-2-环己烯-1-羧酸乙酯
+
107-21-1
乙二醇
→
~85%
32917-26-3
7-甲基-1,4-二噁螺[4.5]-7-癸烯-8-羧酸乙酯
87450-29-1
ethyl 4-ethoxy-2-methylcyclohexa-1,3-diene-1-carboxylate
~76%