Direct, Palladium-Catalyzed, Multicomponent Synthesis of β-Lactams from Imines, Acid Chloride, and Carbon Monoxide
作者:Rajiv Dhawan、Rania D. Dghaym、Daniel J. St. Cyr、Bruce A. Arndtsen
DOI:10.1021/ol061308j
日期:2006.8.1
A new palladium-catalyzed synthesis of 3-amido-substituted beta-lactams is reported. This process involves the one-pot coupling of four components, imines, carbonmonoxide, and acidchloride, providing a flexible route to construct this class of heterocycle. The generation of beta-lactams with two different imines can also be accomplished, providing a method to assemble these products with independent
One of the most facile routes to prepare carboxylate-substituted imidazolines is by the palladium-catalyzed coupling of an imine, carbon monoxide, and an acid chloride. In this reaction, a peptide unit is constructed and directly incorporated into the heterocyclic core.