186581-53-3
重氮甲烷
+
1214-54-6
5-benzylidene-2,2-dimethyl-1,3-dioxane-4,6-dione
→
~25%
3709-33-9
2-benzyl-6,6-dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione
3709-32-8
6,6-dimethyl-2-phenyl-5,7-dioxaspiro[2.5]octane-4,8-dione