A striking difference between the stereochemical course of the photolysis of 5-hydroxy 6-oxo steroids and their bicyclic analogues
作者:Shirley Stiver、Peter Yates
DOI:10.1016/s0040-4039(01)80870-4
日期:1985.1
stereospecific photoisomerization, their bicyclic analogues give identical product mixtures on photolysis. This is attributed to equilibration of the intermediate acyl alkyl diradicals in the bicyclic case, which does not occur in the steroid case because of slowing of rotation about the C-9 – C-10 bond.
虽然5α-和5β-羟基6-氧代甾族化合物经历立体有择的光异构化,但它们的双环类似物在光解时会产生相同的产物混合物。这归因于双环情况下中间体酰基烷基双自由基的平衡,在类固醇情况下不会发生这种情况,因为围绕C-9-C-10键的旋转变慢了。