110-89-4
哌啶
+
109716-61-2
2-formyl-cyclopropanecarboxylic ethyl ester
→
~89%
66035-85-6
5-oxo-5-o-tolyl-valeric acid ethyl ester
5205-39-0
戊二酸单乙酯酰氯
2937-83-9
哌啶戊醇