作者:Subramanian Thiyagarajan、Chidambaram Gunanathan
DOI:10.1021/acscatal.7b04013
日期:2018.3.2
Ruthenium(II) pincer-catalyzed α-olefination of nitriles is reported. This simple protocol provides a transformation for the catalytic synthesis of β-disubstituted vinyl nitriles using secondary alcohols. This catalytic method has an extensive substrate scope, as arylmethyl nitriles, heteroarylmethyl nitriles, and aliphatic nitriles as well as cyclic, acyclic, symmetrical, and unsymmetrical secondary
据报道钌(II)钳制腈的α-烯烃。该简单方案为使用仲醇催化合成β-二取代乙烯基腈提供了一种转化方法。该催化方法具有广泛的底物范围,因为芳基甲基腈,杂芳基甲基腈和脂肪族腈以及环状,无环,对称和不对称的仲醇都用于反应中,以提供多种α-乙烯基腈。C═C键的形成过程是通过不饱和的16电子中间钌钳形配合物激活仲醇的O–H键,并使原位形成的酮与腈进一步缩合。值得注意的是,H 2和H 2 O是该方法的唯一副产物。