Key points are not available for this paper at this time.
The combination of Ir, which has a strong affinity for carbonyl groups, with an acid H-β zeolite as a support and promotor, provides an effective catalyst for the chemoselective hydrogenation of α,β-unsaturated aldehydes and ketones to the corresponding allylic alcohols. Steroidal enones are suitable substrates for this transformation (see scheme). R=CH(Me)(CH2)3CH(Me)2.
bruyn et al. (2003) studied this question.