| abstract |
Oxidation of primary and secondary alcohols comprises reaction with an organic N-chlorine compound and a 2,2,6,6-tetraalkylpiperidine N-oxide or N-hydroxy- or -oxyl compound of formula (I); in which R<1>, R<1>' = lower alkyl; R<2>, R<3> = H or lower alkoxy; or one of R<2> and R<3> = H and the other = OH, lower alkoxy, lower alkylcarbonyloxy, arylcarbonyloxy or lower alkylcarbonylamino; or R<2> + R<3> = OCH2CH2O (a), OCHR<4>CH2O (b) or OCH2C(R<5>)(R<5>')CH2O (c); R<4> = lower alkyl; R<5>, R<5>' = H or lower alkyl; Y = N<+)<=O) X<-> (d), NOH (e) or N-O<.> (f); X<-> = an anion. |