Applying green and highly efficient approach for a facile synthesis of new thiazoloquinoline, thiazolopyridine, and thiazolonaphthyridine derivatives
作者:Zahra Arabpoor、Hamid Reza Shaterian
DOI:10.1007/s13738-018-01579-x
日期:2019.5
AbstractAn eco-friendly approach for the synthesis of new thiazoloquinolines, thiazolopyridines, and thiazolonaphthyridines scaffolds has been achieved using α-enolicdithioesters, cysteamine, arylglyoxal monohydrate, and cyclic 1,3-diketones (dimedone, 4-hydroxycoumarin, and 4-hydroxy-1-methyl-2(1H)-quinolone) under thermal solvent-free conditions. The highlight of this protocol is the generation of
摘要使用α-烯丙基二硫酸酯,半胱胺,一水芳基乙二醛和一环1,3-二酮(二甲酮,4-羟基香豆素和4-羟基-1)合成了新型的噻唑并喹啉,噻唑并吡啶和噻唑并萘啶骨架的环保方法-甲基-2(1 H)-喹诺酮)在无溶剂的热条件下。该协议的重点是使用多米诺骨牌,一锅四组分反应生成两个杂环。在首先生产杂环时,获得了由α-烯丙基二硫酯与半胱胺反应生成的噻唑环。通过将共轭噻唑与Knoevenagel产物缩合而形成的第二个杂环,是由芳基乙二醛一水合物和1,3-二酮实现的,然后进行N环化。不含催化剂和溶剂,反应时间短,产率高且后处理简单,使其成为制备多种噻唑并喹啉,噻唑并吡啶和噻唑并萘啶衍生物的引人注目的方案。 图形概要