Photoinduced molecular transformations. Part 130. Novel stereospecific photorearrangement and stereospecific addition of methanol in steroidal α,β-unsaturated cyclic ketone oximes
products in both of these photoreactions and no lactams were formed. Deuterium-labelling studies on the photoreactions of 5α-cholest-1-en-3-one oxime and its trideuteriated derivative established that a deuteron or a proton is stereospecifically introduced at the 2α-position of the Steroidal oxime in this photorearrangement. A pathway which involves an unprecedented stereospecific addition of a proton or