An efficient one-pot three-component synthesis of functionalized pyrimido[4,5-b]quinolines and indeno fused pyrido[2,3-d]pyrimidines in water
作者:Girijesh K. Verma、Keshav Raghuvanshi、Ram Kumar、Maya Shankar Singh
DOI:10.1016/j.tetlet.2011.11.047
日期:2012.1
A simple, efficient, and high yielding one-pot protocol for the synthesis of pyrimido[4,5-b]quinolines and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidines has been developed by three-component domino coupling of 6-amino-1,3-dimethyluracil, aldehydes, and cyclic 1,3-diketones in ecofriendly solvent water promoted by PTSA. The protocol avoids the use of expensive catalysts, toxic solvents, and chromatographic
开发了一种简单,高效,高产的一锅法合成嘧啶并[4,5- b ]喹啉和茚并[2',1':5,6]吡啶[2,3- d ]嘧啶通过PTSA促进的生态友好型溶剂水中6-氨基-1,3-二甲基尿嘧啶,醛和环状1,3-二酮的三组分多米诺偶联。该方案避免使用昂贵的催化剂,有毒溶剂和色谱分离。证明了这种收敛性和环境友好方法的一般性和功能公差。