Mechanism

The reaction takes place via oxidative addition, alkene complexation, hydride migration and reductive elimination (Scheme 11).

Scheme 11

 

3.6.5.1.3 Hydrosilylation

Rhodium catalyzed hydrosilylation of ketones, imines and alkenes provides an effective route to alcohols, amines and alkanes. Subsequently, a number of chiral rhodium complexes are developed for asymmetric hydrosilylation. Scheme 12-13 shows some examples for chiral rhodium-phosphine catalyzed hydrosilylations.

Scheme 12

Scheme 13

Mechanism

The reaction takes place via oxidative addition, insertion and reductive elimination (Scheme 14).

Scheme 14