| Reference: | Johnson, W. S.; Semmelhack, M. F.; Sultanbawa, M . U. S.; Dolak, L. A. J. Am. Chem. Soc. 1968, 90, 2994-2996. DOI |
| Keywords: | Alkene cleavage • Cationic cyclization • Aldol-K -> Enone • Mechanism • Steroid synthesis • |
| Reagents: | SnCl2 • OsO4 • Pb(OAc)4 • Hydroxide, potassium • |