作者:Jeff Joseph A. Celaje、Xingyue Zhang、Forrest Zhang、Lisa Kam、Jessica R. Herron、Travis J. Williams
DOI:10.1021/acscatal.6b03088
日期:2017.2.3
A (pyridyl)phosphine-ligated ruthenium(II) catalyst is reported for the chemoselective benzylic N-alkylation of amines, via a hydrogen-borrowing mechanism. The catalyst operates under mild conditions, neat, and without a base or other additive. These conditions offer remarkable functional group compatibility for applications in organic synthesis, including reactions involving phenols and anilines,
据报道,通过氢借位机理,(吡啶基)膦连接的钌(II)催化剂用于胺的化学选择性苄基N-烷基化。该催化剂在温和的条件下,纯净且没有碱或其他添加剂的条件下运行。这些条件为有机合成中的应用(包括涉及酚和苯胺的反应)提供了显着的官能团相容性,很难实现。机理研究表明,与其他用于该反应的催化剂不同,氧化还原步骤快速且可逆,而亚胺形成缓慢。我们认为这是通过这些反应条件实现的选择性的起源。