Selective photocatalytic oxidation of alcohols to corresponding aldehydes in solvent-free conditions using porphyrin sensitizers
作者:Seyed Saeed Mehrabi-Kalajahi、Mahdi Hajimohammadi、Nasser Safari
DOI:10.1007/s13738-016-0821-2
日期:2016.6
selective and aerobic photooxidation of a range of aromatic, aliphatic and α,β-unsaturated alcohols to corresponding carbonyl compounds has been performed with tetraphenylporphyrin (H2TPP), ClFeTPP and ZnTPP as sensitizers using visible light and in the presence of molecular oxygen in solvent-free conditions. The conversion rates for alcohols oxidations were in the order of free-base porphyrin (H
摘要在这项工作中,使用四苯基卟啉(H 2 TPP),ClFeTPP和ZnTPP作为增敏剂,使用可见光并在有以下物质存在的情况下,将多种芳香族,脂肪族和α,β-不饱和醇选择性和好氧光氧化为相应的羰基化合物。无溶剂条件下的分子氧。醇氧化的转化率依次为游离碱卟啉(H 2 TPP)>金属卟啉(ClFeTPP)和(ZnTPP)。该方法具有广泛的应用范围,在合理的时间内具有显着的转化率和产物收率,不包括繁琐的后处理,具有化学选择性和在温和的反应条件下进行的优点。关于使用H 2氧化环庚醇和环辛醇的问题TPP作为光敏剂,TON分别达到1686和2464,选择性超过99%。 图形概要