110-86-1
吡啶
+
570-08-1
乙酰基丙二酸二乙酯
75-36-5
乙酰氯
→
72959-49-0
diethyl 2-(1-acetyloxyethylidene)propanedioate
31575-84-5
diethyl 2-(1-hydroxyethylidene)malonate