Vanadium(IV) Complexes with Methyl-Substituted 8-Hydroxyquinolines: Catalytic Potential in the Oxidation of Hydrocarbons and Alcohols with Peroxides and Biological Activity
作者:Joanna Palion-Gazda、André Luz、Luis R. Raposo、Katarzyna Choroba、Jacek E. Nycz、Alina Bieńko、Agnieszka Lewińska、Karol Erfurt、Pedro V. Baptista、Barbara Machura、Alexandra R. Fernandes、Lidia S. Shul’pina、Nikolay S. Ikonnikov、Georgiy B. Shul’pin
DOI:10.3390/molecules26216364
日期:——
high catalytic activity in the oxidation of hydrocarbons with H2O2 in acetonitrile at 50 °C, in the presence of 2-pyrazinecarboxylic acid (PCA) as a cocatalyst. The maximum yield of cyclohexane oxidation products attained was 48%, which is high in the case of the oxidation of saturated hydrocarbons. The reaction leads to the formation of a mixture of cyclohexyl hydroperoxide, cyclohexanol and cyclohexanone
甲基取代的 8-羟基喹啉 (Hquin) 已成功用于合成五配位氧钒 (IV) 配合物:[VO(2,6-(Me) 2 -quin) 2 ] ( 1 ), [VO(2,5- (Me) 2 -quin) 2 ] ( 2 ) 和[VO(2-Me-quin) 2 ] ( 3 )。配合物1 – 3在用 H 2 O 2氧化烃中表现出高催化活性在 50 °C 的乙腈中,在 2-吡嗪甲酸 (PCA) 作为助催化剂存在下。环己烷氧化产物的最大产率为48%,在饱和烃氧化的情况下是高的。该反应导致形成环己基过氧化氢、环己醇和环己酮的混合物。当加入三苯基膦时,环己基过氧化氢完全转化为环己醇。分别考虑正庚烷和甲基环己烷氧化中的区域选择性和键选择性,表明氧化是在羟基自由基的参与下进行的。该配合物在醇的氧化中表现出中等活性。复合体1和2降低结肠直肠 (HCT116) 和卵巢 (A2780) 癌细胞系和正常真皮成纤维细