500-22-1
3-吡啶甲醛
→
137479-75-5
ethyl 3-methyl-5-pyridin-3-ylpenta-2,4-dienoate
2510-23-8
3-乙炔基吡啶
+
122135-84-6
ethyl 3-(trifluoromethylsulfonyloxy)but-2-enoate