Functionalized phenolic monomers have been generated and isolated from an organosolv lignin through a two‐step depolymerization process. Chemoselective catalytic oxidation of β‐O‐4 linkages promoted by the DDQ/tBuONO/O2 system was achieved in model compounds, including polymeric models and in real lignin. The oxidized β‐O‐4 linkages were then cleaved on reaction with zinc. Compared to many existing methods,
通过两步解聚过程,已经生成并从有机溶剂
木质素中分离出功能化的
酚醛单体。
DDQ / t BuONO / O 2系统促进的β-O-4键的
化学选择性催化
氧化在模型化合物(包括
聚合物模型)和实际
木质素中实现。与
锌反应后,
氧化的β-O-4键断裂。与许多现有方法相比,可以在一锅中完成的该方案具有很高的选择性,从而生成了一种简单的产物混合物,可以轻松地纯化这些产物以得到纯净的化合物。这些产品中提供的功能使其成为潜在的有价值的构建基块。