Manganese-Catalyzed <i>α-</i>Olefination of Nitriles with Secondary Alcohols
作者:Vinita Yadav、Vinod G. Landge、Murugan Subaramanian、Ekambaram Balaraman
DOI:10.1021/acscatal.9b02811
日期:2020.1.17
for α-olefination of nitriles using secondary alcohols with the liberation of molecular hydrogen and water as the only byproducts is reported. This reaction is catalyzed by a molecularly defined manganese(I) pincer complex and operates in the absence of any hydrogen acceptors. A broad range of substrates including cyclic, acyclic, and benzylic alcohols, as well as various nitrile derivatives, such as
Oxygen-Dependent Ligand-Controlled Iron-Catalyzed Chemoselective Synthesis of Olefins and Vinyl Nitriles
作者:Amit Kumar Guin、Subhajit Chakraborty、Subhankar Khanra、Santana Chakraborty、Nanda D. Paul
DOI:10.1021/acs.orglett.4c00455
日期:2024.4.5
An oxygen-dependent ligand-controlled chemoselective synthesis of vinyl nitriles and E-olefins by coupling a variety of alcohols and benzyl cyanides, catalyzed by a well-characterized, air-stable, easy-to-prepare Fe(II) catalyst (1a) bearing a redox-active arylazo pincer (L1a) is reported. The azo-moiety of the ligand backbone acts as an electron and hydrogen reservoir, enabling catalyst 1a to efficiently
在特征良好、空气稳定、易于制备的 Fe(II) 催化剂的催化下,通过偶联多种醇和苯乙腈,进行乙烯基腈和E-烯烃的氧依赖性配体控制化学选择性合成 ( 1a )据报道,其具有氧化还原活性芳基偶氮钳( L 1a )。配体主链的偶氮部分充当电子和氢储存库,使催化剂1a能够分别在氧气和氩气气氛下选择性地以中等至良好的产率有效地生产广谱乙烯基腈和E-烯烃。