21882-77-9
Phosphorane, (diethoxyethenylidene)triphenyl-
+
431-03-8
2,3-丁二酮
→
~48%
87841-02-9
2,2-diethoxy-4-methyl-5-methylidenefuran
87841-04-1
4-methyl-5-methylidenefuran-2-one