Reduction of. ALPHA.,. BETA.-Unsaturated Ketones with Diphenylsilanes Bearing Several Substituents on Their Phenyl Moiety Catalyzed by Rhodium-Phosphine …
1, 4-Addition product was afforded exclusively by rhodium–phosphine complex-catalyzed hydrosilylation by using 2-cyclohexen-1-one and a dihydrosilane bearing an ether substituent in spite of the fact that dihydrosilanes were believed to give 1, 2-addition product selectively.
[Koenigs, C. David F.; Klare, Hendrik F. T.; Ohki, Yasuhiro; Tatsumi, Kazuyuki; Oestreich, Martin Organic Letters, 2012 , vol. 14, # 11 p. 2842 - 2845]