substituted) in 1,3-dioxolane in the presence of a sensitizer (benzophenone or anthraquinone) led to 4-oxobutanal acetals in fair to excellent yield through a very simple procedure (workup in most cases by bulb-to-bulb distillation). The resulting acetals were irradiated to give 2-hydroxycyclobutanone ketals, again through a simple procedure that gave a good yield with open-chain aliphatic derivatives.
在敏化剂(
二苯甲酮或
蒽醌)存在下,在
1,3-二氧戊环中辐照
1,3-二氧戊环中的 α,β-不饱和酮(脂肪族、开链和环状以及芳基取代的)导致 4-氧代
丁醛缩醛的产率相当到极好通过一个非常简单的程序(在大多数情况下通过球对球蒸馏进行处理)。所得的
缩醛经辐照得到
2-羟基环丁酮缩酮,同样通过一个简单的程序得到了开链脂肪族衍
生物的良好收率。