In the oxidation of the amino styrenes 1a–1j only products of the oxidative attack at the C C double bond and hydrolysis products are obtained. Aprotic dipolar solvents and the addition of molecular sieve 5A promote the oxygen uptake. The addition of hydrochinone to the oxidation system does not influence the rate of oxygen absorption or the yields of the oxidation products.
Oxidation of Enamines with Molecular Oxygen. Part 3. Oxidation of Some Aminostyrenes.-In order to get a better insight in the mechanism of olefin oxidation, the oxidation of the aminostyrenes (I)-(V) is investigated. In all cases only an oxidative attack at the C-C double bond takes place. Reaction products (tabulated by use of gaschromatographic analysis) are α-aminoketones and/or products of the C-C double bond cleavage. Aprotic dipolar solvents and the addition of molecular sieves 5Å promote the oxygen uptake, whereas addition of hydroquinone does not influence the rate of oxygen uptake or the yields of oxidation products. -(BLAU, K.; BURGEMEISTER, I.; GRASNICK, J.; VOERCKEL, V.; J. Prakt. Chem. 333 (1991) 3, 455-466; Sekt. Chem., TU Merseburg, O-4200 Merseburg, Fed. Rep. Ger.; EN)
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