5436-21-5
4,4-二甲氧基-2-丁酮
+
1594-57-6
4-吡啶基偕胺肟
→
~73%
142114-66-7
6-methyl-1-oxido-2-pyridin-4-ylpyrimidin-1-ium
51731-17-0
反式-4-甲氧基-3-丁烯-2-酮
~41%