Oxidation of terpenoid diols with chlorine dioxide: Preparation of ketols and α-chlorohydroxyketones of carane and pinane structures
作者:L. L. Frolova、A. V. Popov、L. V. Bezuglaya、I. N. Alekseev、P. A. Slepukhin、A. V. Kuchin
DOI:10.1134/s1070363213080124
日期:2013.8
Vicinal terpenoid diols of carane- and pinane-type structures have been oxidized with chlorine dioxide in pyridine to form the corresponding ketols in the preparative yield of 52-72%, the selectivity of alpha-hydroxyketones formation being 80-90%. It has been shown that the diols reactivity towards oxidation with ClO2 depends mainly on the stereochemistry of hydroxy groups. The catalysts, VO(acac)(2), Mo(CO6), and MoCl5 have practically no effect on the oxidation process. When the reaction has been performed in dimethylformamide, the hydroxyketone chlorination occurred at high conversion.