作者:Julien Buendia、Jakob Mottweiler、Carsten Bolm
DOI:10.1002/chem.201101579
日期:2011.12.2
A gram‐scale synthetic access to diastereomerically pure dilignol β‐O‐4 type model compounds, which represent valuable candidates for studies of lignin cleavage and valorization, is described. Following a straightforward procedure both diastereoisomers of 1,3‐dilignols can be prepared. In the key‐step, tert‐butyl aryloxy esters are used as enolate precursors for additions on aldehydes. After separation
本文描述了以克级合成方法获得的非对映体纯的dilignolβ- O-4型模型化合物,这些化合物代表了木质素裂解和增价研究的有价值的候选对象。按照简单的步骤,可以制备1,3-二氮杂酚的两种非对映异构体。在关键步骤中,将叔丁基芳氧基酯用作烯醇盐的前体,用于醛的添加。分离后,将生成的赤型和苏型β-羟基酯分别还原,以高收率得到目标化合物。