Z-Selective hydroamidation of terminal alkynes with secondary amides and imides catalyzed by a Ru/Yb-system
作者:Annette E. Buba、Matthias Arndt、Lukas J. Gooßen
DOI:10.1016/j.jorganchem.2010.08.034
日期:2011.1
to catalyze the addition of nitrogen nucleophiles to terminal alkynes under mild conditions to stereoselectively form the Z-enamide or Z-enimide products. Various secondary amides and imides could be added across the triple bond of a range of aliphatic and aromatic alkynes. The new bimetallic catalyst system sets new standards with regard to scope and selectivity for the synthesis of Z-configured anti-Markovnikov
形成的催化剂体系的原位从双(2-甲基烯丙基)环辛-1,5-二烯钌(II)[(COD)的Ru(满足)2 ],1,4-双(二环己基膦)丁烷(dcypb)和镱发现(III)三氟甲磺酸盐水合物(Yb(OTf)3)在温和条件下催化氮亲核试剂向末端炔烃的加成,以立体选择性地形成Z-烯酰胺或Z-烯酰亚胺产物。可以跨一系列脂族和芳族炔的三键添加各种仲酰胺和酰亚胺。新的双金属催化剂体系就合成Z-构型的反-Markovnikov酰胺类化合物的范围和选择性设定了新的标准。