A facile one-pot synthesis of acyclic β-enamino ketones, an important class of versatile synthetic intermediates
作者:Anusuya Choudhury、Michael Breslav、Jeffrey S. Grimm、Tong Xiao、Dawei Xu、Kirk L. Sorgi
DOI:10.1016/j.tetlet.2007.02.115
日期:2007.4
A one-pot sequential process consisting of nucleophilic substitution of the lithiated acetylides with Weinreb amides followed by a Michael reaction of the extruded N-methoxy-N-methylamine after quenching with saturated NH4Cl, provided β-enamino ketones in high yield and in a single geometrical isomeric form. It has been demonstrated that this method is applicable to a wide variety of such amides and
一锅式顺序过程包括用Weinreb酰胺亲核取代锂化乙炔化物,然后用饱和NH 4 Cl淬灭后,挤出的N-甲氧基-N-甲胺进行迈克尔反应,从而以高收率和高纯度提供了β-烯氨基酮。单一的几何异构形式。已经证明该方法适用于各种各样的这种酰胺和不同的乙炔化物。