53143-91-2
2,2-diethoxyoxane
+
107-91-5
氰乙酰胺
→
~47%
88696-57-5
2-cyano-2-(oxan-2-ylidene)acetamide
88696-58-6
7-oxo-2,3,4,6-tetrahydropyrano[3,2-c]pyridine-8-carbonitrile