Some pre-activated rhodium bipyridine complexes cis-[Rh(N–N)2Cl2]Cl are catalytically active at temperatures between 5 and 20 C in the transfer hydrogenation from propan-2-ol to N@N, C@O or C@C double bond. Azobenzene is reduced at 20 C with a conversion of 54.2%, while acetophenone is hydrogenated for 34.1%. The C@C double bond of benzylidenacetone is reduced even at 5 C with a conversion of 17.2%, while a complete conversion is obtained at 40 C.
A low temperature transfer hydrogenation of N=N, C=O or C=C bond using rhodium bipyridine catalysts / P. FREDIANI; A. SALVINI; M. BESSI; L. ROSI; C. GIANNELLI. - In: INORGANIC CHEMISTRY COMMUNICATIONS. - ISSN 1387-7003. - STAMPA. - 8:(2005), pp. 94-95. [10.1016/j.inoche.2004.11.013]
A low temperature transfer hydrogenation of N=N, C=O or C=C bond using rhodium bipyridine catalysts
FREDIANI, PIERO;SALVINI, ANTONELLA;ROSI, LUCA;
2005
Abstract
Some pre-activated rhodium bipyridine complexes cis-[Rh(N–N)2Cl2]Cl are catalytically active at temperatures between 5 and 20 C in the transfer hydrogenation from propan-2-ol to N@N, C@O or C@C double bond. Azobenzene is reduced at 20 C with a conversion of 54.2%, while acetophenone is hydrogenated for 34.1%. The C@C double bond of benzylidenacetone is reduced even at 5 C with a conversion of 17.2%, while a complete conversion is obtained at 40 C.
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