作者:Hiroshi Suginome、Norio Maeda、Yuko Takahashi、Nobuyoshi Miyata
DOI:10.1246/bcsj.54.846
日期:1981.3
The photoreaction of 4,4-dimethylcholest-5-en-3-one oxime, a β,γ-unsaturated ketone oxime, has given two lactams, 4a,4a-dimethyl-3-aza-A-homocholest-5-en-4-one and 4a,4a-dimethyl-4-aza-A-homocholest-5-en-3-one resulting from photo-Beckmann rearrangement. 4,4,6-Trimethylcholest-5-en-3-one oxime behaved analogously on photolysis, yielding two lactams but accompanied by 4,6-dimethyl-4-methylene-3,4-s
4,4-二甲基胆甾醇-5-en-3-one肟(一种β,γ-不饱和酮肟)的光反应产生了两种内酰胺,4a,4a-二甲基-3-氮杂-A-homocholest-5-en- 4-one 和 4a,4a-dimethyl-4-aza-A-homocholest-5-en-3-one 由 photo-Beckmann 重排产生。4,4,6-Trimethylcholest-5-en-3-one 肟在光解时表现类似,产生两种内酰胺,但伴随着 4,6-二甲基-4-亚甲基-3,4-secoccholest-5-ene-3-腈作为次要产品。相比之下,普通贝克曼重排的主要产物是二阶贝克曼重排产生的腈。