Controlled multistep oxidation of alcohols and aldehydes to carboxylic acids using air, sunlight and a robust metalloporphyrin sensitizer with a pH-switchable photoreactivity

被引：26

作者：

Hajimohammadi, Mahdi ^{[1
,3
]}

Schwarzinger, Clemens ^{[2
]}

Knoer, Guenther ^{[1
,3
]}

机构：

[1] Shahid Beheshti Univ, GC, Dept Chem, Tehran 1983963113, Iran

[2] Johannes Kepler Univ Linz, Inst Chem Technol Organ Stoffe, A-4040 Linz, Austria

[3] Johannes Kepler Univ Linz, Inst Anorgan Chem, A-4040 Linz, Austria

来源：

RSC ADVANCES | 2012年 / 2卷 / 08期

基金：

奥地利科学基金会;

关键词：

LIGHT; CATALYSIS; SYSTEMS; DRIVEN; OXYGEN;

D O I：

10.1039/c2ra01076c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A homogeneous photocatalytic reaction cascade for the stepwise biomimetic oxidation of alcohols to form either aldehydes or alternatively carboxylic acids is presented. The system is based on robust and abundant materials and efficiently utilizes dioxygen as a clean and sustainable oxidant. Photoassisted substrate transformation occurs upon exposure to visible light (< 620 nm) or sunlight. The pH-dependent photoredox mechanism of the sensitizer can be reversibly switched between two different selectivity patterns to control the desired product formation.

引用

页码：3257 / 3260

页数：4

共 17 条

[1] Concepts of nature in organic synthesis: Cascade catalysis and multistep conversions in concert [J].