Microwave-assisted synthesis of 2,3-dihydropyrido[2,3-d]pyrimidin-4(1H)-ones catalyzed by DBU in aqueous medium
作者:Liupan Yang、Daxin Shi、Shu Chen、Hongxin Chai、Danfei Huang、Qi Zhang、Jiarong Li
DOI:10.1039/c2gc16469h
日期:——
A clean green, efficient and facile protocol was developed for the synthesis of a series of 2,3-dihydropyrido[2,3-d]pyrimidin-4(1H)-ones in water with good yield by the reaction of 2-amino-nicotinonitriles with carbonyls catalyzed by DBU under microwave irradiation. The DBU–H2O system can be recycled five times without activity loss.
一种清洁的绿色,高效且简便的协议被用来合成一系列2,3-二氢吡啶并[2,3- d ]嘧啶4(1 H)-酮。水微波辐射下,DBU催化2-氨基烟腈与羰基的反应,收率高。DBU–H 2 O系统可以循环使用五次,而不会造成活动损失。