Metallo-Deuteroporphyrin as a Biomimetic Catalyst for the Catalytic Oxidation of Lignin to Aromatics
作者:Chenjie Zhu、Weiwei Ding、Tao Shen、Chenglun Tang、Chenguo Sun、Shichao Xu、Yong Chen、Jinglan Wu、Hanjie Ying
DOI:10.1002/cssc.201500048
日期:2015.5.22
ins derived from hemin were prepared as models of the cytochrome P450 enzyme. With the aid of the highly active CoII deuteroporphyrin complex, the catalytic oxidation system was applied for the oxidation of several lignin model compounds, and high yields of monomeric products were obtained under mild reaction conditions. It was found that the modified cobalt deuteroporphyrin that has no substituents
制备了一系列来自血红素的金属-氘代卟啉作为细胞色素P450酶的模型。借助于高活性的Co II氘卟啉配合物,该催化氧化系统被用于氧化几种木质素模型化合物,在温和的反应条件下获得了高产率的单体产物。发现在介孔位点处没有取代基但在β位点处的丙酸酯侧链中具有二硫键的改性钴氘代卟啉比合成的四苯基卟啉具有更高的活性和稳定性。在丙酸侧链的变化可以从典型的C转移钴deuteroporphyrins的反应性 C键裂解至CO键断裂。此外,这种新型的氧化系统可以将酶解木质素转化为解聚产物,其中包括大量定义明确的芳香族单体。