517-23-7
α-乙酰基-γ-丁内酯
+
17356-08-0
aminothioamide
→
~54%
21585-16-0
2,3-二氢-5-(2-羟基乙基)-6-甲基-2-硫氧代-1H-嘧啶-4-酮
86351-01-1
2-(2-hydroxy-ethyl)-acetoacetic acid ethyl ester