novel functionalized 4H-pyrano[2,3-b]quinoline and 1,4-dihydrobenzo[b][1,8]naphthyridine derivatives via the one-pot reaction of 2-chloroquinoline-3-carbaldehydes, 6-aminouracils and dimedone or 3-methyl-1H-pyrazol-5(4H)-one was developed. The simple procedure, mild organocatalytic reaction conditions, good to high yields, and no column chromatography are important features of this protocol.
通过
2-氯喹啉-3-
甲醛的一锅反应,高效合成新型功能化的4 H-
吡喃并[2,3- b ]
喹啉和1,4-二氢苯并[ b ] [1,8]
萘啶衍
生物-
氨基尿
嘧啶和
二甲酮或3-甲基-1 H-
吡唑-5(4 H)-被开发。简单的程序,温和的有机催化反应条件,良好至高收率以及无柱色谱法是该方案的重要特征。