504-29-0
2-氨基吡啶
+
2960-66-9
反式-4-氧基-2-丁烯酸乙酯
→
~51%
101820-69-3
咪唑并[1,2-a]吡啶-3-乙酸乙酯
19255-60-8
(E)-4,4-dimethoxy-but-2-enoic acid ethyl ester