Versatile Synthesis of Pyrrole-2-acetic Esters and (Pyridine-2-one)-3-acetic Amides by Palladium-Catalyzed, Carbon Dioxide-Promoted Oxidative Carbonylation of (Z)-(2-En-4-ynyl)amines
作者:Bartolo Gabriele、Giuseppe Salerno、Alessia Fazio、Lucia Veltri
DOI:10.1002/adsc.200606085
日期:2006.10
The oxidative carbonylation of readily available (Z)-(2-en-4-ynyl)amines, catalyzed by the PdI2-KI system, selectively afforded in satisfactory yields (40–95 %) either pyrrole-2-acetic ester or (pyridine-2-one)-3-acetic amide derivatives, depending on the susbtitution pattern of the substrate and the reaction conditions. The presence of an excess of carbon dioxide proved in most cases to be beneficial
由PdI 2 -KI体系催化的,易于获得的(Z)-(2-en-4-ynyl)胺的氧化羰基化选择性地提供了令人满意的产率(40-95%)的吡咯-2-乙酸酯或(吡啶-2-酮)-3-乙酰胺衍生物,取决于底物的取代方式和反应条件。在大多数情况下,过量二氧化碳的存在对反应速率和产物选择性都有利。