K. Nakayama et al., OXIDATION OF BENZYLIC DERIVATIVES WITH DIOXYGEN CATALYZED BY MIXED ADDENDA METALLOPHOSPHATE CONTAINING VANADIUM AND MOLYBDENUM, Chemistry Letters, (10), 1993, pp. 1699-1702
Mixed addenda heteropolyoxometalate, NPV6Mo6, was found to be an effic
ient catalyst for the oxidative dehydrogenation of a variety of benzyl
ic amines to the corresponding Schiff-base imines with molecular oxyge
n in toluene solution. Under the same reaction conditions, isochroman
and indan were respectively oxidized to 3,4-dihydroisocoumarin and 1-i
ndanone with high selectivity.