Isophorone homogeneous catalysis

Selective allylic oxidation of olefins like isophorone is a very demanding chemical reaction [135].The keto-isophorone obtained by oxidation of (3-isophor-one (Fig. 14) is an important intermediate for the preparation of flavors and fragrances. In homogeneous catalysis, yields superior to 90% are reached [136, 137]. The heterogeneous analogs were always worse catalysts with, for example, a drop of the yield from 67% to rally 6% when the Co(salen) complex was immobilized in silica [138]. 

---