Palladium-catalyzed oxidation of monoterpenes: novel tandem oxidative coupling–oxidation of camphene by dioxygen

摘要: The Pd-catalyzed stereoselective oxidative coupling of (−)-camphene gives mainly (E,E)-diene, i.e., bis(3,3-dimethyl-2norbornylidene)ethane, which can be oxidized into the corresponding ,-unsaturated ketone, i.e. (3,3-dimethyl-2-norbornyl) (8-camphenyl)ketone, with LiNO3 being used as a reoxidant and dioxygen final oxidant; these two reactions are performed in one port process up to 90% selectivity for ketone. applications Pd(II)/NO 3 − catalytic system oxidation limonene -pinene have also been studied. © 2001 Elsevier Science B.V. All rights reserved.