A cascade reaction sequence en route to 7-substituted 2-aminopyrrolo[1,2-a]pyrimidine-4,6-diones and the corresponding acrylic acid derivatives
作者:Ju Gao、Rodger F. Henry、Thomas G. Pagano、Richard W. Duerst、Andrew J. Souers
DOI:10.1016/j.tetlet.2007.08.003
日期:2007.10
Reaction of α-bromo ketones with 6-amino-2-methylpyrimidin-4(3H)-one under basic conditions and in the presence of atmospheric oxygen affords novel 7-substituted 2-amino-pyrrolo[1,2-a]pyrimidine-4,6-diones that are readily hydrolyzed to afford the corresponding acrylic acid derivatives. The reaction sequence consists of an initial alkylation, followed by an unexpected condensation, elimination, and
在碱性条件下,在大气氧的存在下,α-溴代酮与6-氨基-2-甲基嘧啶-4(3 H)-one的反应提供了新型的7-取代的2-氨基-吡咯并[1,2- a ]嘧啶-4,6-二酮易于水解,得到相应的丙烯酸衍生物。反应顺序包括初始烷基化,然后进行意想不到的缩合,消除和氧化顺序,从而得到产物。该级联反应序列代表了通往所述小分子的快速且空前的途径。