NEW APPLICATIONS OF SOLID SILICA CHLORIDE (─SiO<sub>2</sub>Cl): EFFICIENT OXIDATION OF CYCLIC THIOACETALS, TMS, TBDMS, AND THP ETHERS TO THEIR CARBONYL COMPOUNDS BY SOLID SILICA CHLORIDE/KMnO<sub>4</sub> SYSTEM
作者:Habib Firouzabadi、Hassan Hazarkhani、Hassan Hassani
DOI:10.1080/10426500490262531
日期:2004.2.1
aromatic and aliphatic cyclic thioacetals (1,3-dithiolanes, 1,3-dithianes) and silyl and pyranyl ethers into their corresponding carbonyl compounds in dry CH3CN at room temperature in high yields. Over-oxidation of aldehydes to carboxylic acids has not been observed by this system. In the absence of silica chloride, KMnO4 in dry CH3CN is an ineffective reagent for these oxidations.
固体氯化硅/KMnO4 系统在室温下在干燥的 CH3CN 中有效地将芳香族和脂肪族环状硫缩醛(1,3-二硫戊环、1,3-二噻烷)以及甲硅烷基和吡喃基醚氧化成相应的羰基化合物。该系统没有观察到醛过度氧化成羧酸。在没有氯化硅的情况下,干燥 CH3CN 中的 KMnO4 对这些氧化作用无效。