Two new, mild and stable chromium (VI) reagents from tripropylamine are described. Orange solids tripropylammonium fluorochromate(VI) (C3H7)3NH[CrO3F], (TriPAFC), and tripropylammonium chlorochromate(VI) (C3H7)3NH[CrO3Cl], (TriPACC), absorbed on alumina are easily prepared in nearly quantitative yield by the interaction of tripropylamine with CrO3 and the corresponding acid. These reagents are versatile reagents for the effective and selective oxidation of organic substrates, in particular for alcohols, under mild conditions.
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