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A variety of tertiary nitrogen compounds have been oxidized to corresponding N-oxides in near quantitative yields by molecular oxygen/2-methylpropanal system in the absence of metal catalyst.

A variety of tertiary nitrogen compounds have been oxidized to corresponding N-oxides in near quantitative yields by molecular oxygen/2-methylpropanal system in the absence of metal catalyst.

Metal phthalocyanines have been found to catalyze the oxidation of sulphides to sulphones at room temperature by molecular oxygen (1 atm) in the presence of isobutyraldehyde as sacrificial aldehyde. Among the metal phthalocyanines studied those of Fe(II), Mn(II) and Co(II)tetrasulphonato- showed excellent activity, followed by VO, while those of Ni(II) and Cu(II) were found to be least active for sulfide oxidation. Mn(II)phthalocyanine catalyzed epoxidation of olefins with molecular oxygen - isobutyraldehyde systems is also reported.