Selective Monomethylation of Amines with Methanol as the C
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作者:Geunho Choi、Soon Hyeok Hong
DOI:10.1002/anie.201801524
日期:2018.5.22
methanol as the methylating agent, which is a sustainable chemical feedstock. Kinetic control of the aliphatic amine monomethylation was achieved by using a readily available ruthenium catalyst at an adequate temperature under hydrogen pressure. Various substrates including bio‐related molecules and pharmaceuticals were selectively monomethylated, demonstrating the general utility of the developed method
N-单甲基官能团是多种合成和天然化合物中的常见基序。然而,由于由过度甲基化引起的选择性问题,容易获得此类化合物仍然是有机合成中的基本挑战。为了解决这个问题,我们开发了一种方法,可以使用甲醇作为甲基化剂,对各种结构和功能多样的胺(包括通常存在问题的伯脂肪族伯胺)进行选择性催化单甲基化,这是一种可持续的化学原料。通过使用容易获得的钌催化剂在适当的温度和氢气压力下实现脂肪族胺单甲基化的动力学控制。各种底物(包括与生物有关的分子和药物)被选择性地单甲基化,