Sp. Green et Da. Whiting, MECHANISTIC PATHWAYS FOR RADICAL RING EXPANSION AROMATIZATION OF STEROID-C D MODELS/, Journal of the Chemical Society. Perkin transactions. I, (11), 1993, pp. 1205-1206
The pathway for ring expansion and aromatisation of the radical 9 to t
he isomeric tetralins 7 and 10 (Scheme 2) has been investigated by deu
terium labelling, and a new mechanism (Scheme 5) is put forward.