Manganese-Catalyzed Aminomethylation of Aromatic Compounds with Methanol as a Sustainable C1 Building Block
作者:Matthias Mastalir、Ernst Pittenauer、Günter Allmaier、Karl Kirchner
DOI:10.1021/jacs.7b05253
日期:2017.7.5
well-defined hydride Mn(I) PNP pincer complex, recently developed in our laboratory, catalyzes this process in a very efficient way, and a total of 28 different aminomethylated products were synthesized and isolated yields of up to 91%. In a preliminary study, a related Fe(II) PNP pincer complex was shown to catalyze the methylation of 2-naphtol rather than its aminomethylation displaying again the divergent
该研究代表了锰催化的环境良性、实用的三组分氨甲基化活化芳香化合物的第一个例子,包括萘酚、苯酚、吡啶、吲哚、咔唑和噻吩,结合胺和甲醇作为 C1 源。这些反应通过一系列脱氢和缩合步骤以高原子效率进行,从而产生选择性的 CC 和 CN 键形成,从而释放氢和水。我们实验室最近开发了一种明确定义的氢化物 Mn(I) PNP 钳形复合物,以非常有效的方式催化了这一过程,总共合成了 28 种不同的氨甲基化产物,分离产率高达 91%。在初步研究中,