Microwave-Assisted Synthesis of Polysubstituted 4-Quinolones from Deprotonated α-Aminonitriles
作者:Alexandra Romek、Till Opatz
DOI:10.1002/ejoc.201000858
日期:2010.10
The α-alkylation of deprotonated N-aryl-α-aminonitriles with α-bromoesters furnishes intermediates that can be cyclized to 4-quinolones upon microwave irradiation. Alternatively, base-induced dehydrocyanation of the alkylation products furnishes enaminoesters, which can, for example, be converted into quinoline-3-carboxylates.
去质子化的 N-芳基-α-氨基腈与 α-溴酯的 α-烷基化提供了可以在微波辐射下环化为 4-喹诺酮类的中间体。或者,烷基化产物的碱诱导脱氢氰化提供烯氨基酯,其可以例如转化为喹啉-3-羧酸酯。