Catalytic oxidation of olefins and alcohols with hydrogen peroxide in a two-phase system giving mono- and dicarboxylic acids
作者:Z. P. Pai、A. G. Tolstikov、P. V. Berdnikova、G. N. Kustova、T. B. Khlebnikova、N. V. Selivanova、A. B. Shangina、V. G. Kostrovskii
DOI:10.1007/s11172-006-0047-z
日期:2005.8
The present study considered the influence of various factors on the catalytic activity of systems based on a combination of tetrakis(oxodiperoxotungsto)phosphate(3−) with quaternary ammonium cations, for example, with methyltri-n-octylammonium [Me(n-C8H17)3N]+. The catalysts were tested in oxidation of cycloolefins (cyclohexene and cyclooctene), alcohols (octan-1-ol and phenylmethanol), and unsaturated
本研究考虑了各种因素对基于四(氧代二过氧钨)磷酸盐(3-)与季铵阳离子(例如,与甲基三正辛基铵 [Me(n-C8H17) 3N]+。该催化剂在环烯烃(环己烯和环辛烯)、醇类(辛烷-1-醇和苯甲醇)和不饱和脂肪酸(顺式 9-十八碳烯酸和 12-羟基-9Z-十八碳烯酸)与 30% 氢的氧化中进行了测试过氧化物溶液。这些反应在温和条件(大气压,80-90°C)下进行,得到羧酸。催化系统通过振动(红外和拉曼)光谱表征。研究了由各种前体形成的系统状态,即多金属氧酸盐和相转移催化剂。首次证明过氧配合物的结构形成取决于所用季铵盐的卤化物阴离子的性质。确定了各个催化配合物的熔点。找到了氧化的最佳条件。