A new route to luminescent derivatives of androgenic steroids containing a ketone group in the 3- or 17-position has been developed. Reaction with the fac-Re(CO)3Cl complex of 3,3′-diamino-2,2′-bipyridine (complex 1) afforded a cyclic aminal product with different steroids. The rate of reaction and yield varies according to the conjugation or steric hindrance around the ketone group.
Bullock, S., Hallett, A. J., Harding, L. P., Higginson, J. J., Piela, S. A. F., Pope, S. J. A., & Rice, C. R. (2012). Luminescent rhenium fac-tricarbonyl-containing complexes of androgenic oxo-steroids. Dalton Transactions, 41(48), 14690-14696. https://doi.org/10.1039/c2dt31476b