Metal-Free Catalyst for the Chemoselective Methylation of Amines Using Carbon Dioxide as a Carbon Source
作者:Shoubhik Das、Felix D. Bobbink、Gabor Laurenczy、Paul J. Dyson
DOI:10.1002/anie.201407689
日期:2014.11.17
N‐methylation of amines is an important step in the synthesis of many pharmaceuticals and has been widely applied in the preparation of other key intermediates and chemicals. Therefore, the development of efficient methylation methods has attracted considerable attention. In this respect, carbon dioxide is an attractive C1 building block because it is an abundant, renewable, and nontoxic carbon source
胺的N-甲基化是许多药物合成中的重要步骤,已广泛用于制备其他关键中间体和化学药品。因此,有效的甲基化方法的发展引起了相当大的关注。在这方面,二氧化碳是有吸引力的C 1构成要素,因为它是一种丰富,可再生且无毒的碳源。因此,我们开发了一种高度化学选择性,无金属的催化体系,该体系可在环境条件下对胺的N-甲基化进行操作。