1187758-79-7
2-(1,2-dihydroxyethyl)-3-phenyl-4H-thiochromen-4-one 1,1-dioxide
+
96-22-0
二乙基酮
→
~89%
1187758-90-2
2-(2,2-diethyl-1,3-dioxolan-4-yl)-3-phenyl-4H-thiochromen-4-one 1,1-dioxide