Palladium-catalyzed cross-coupling of 5-acyl and 5-formyl-1,2,4-triazines and their derivatives with heteroaromatic tin compounds
作者:Danuta Branowska、Ewa Olender、Andrzej Rykowski
DOI:10.1016/j.tet.2014.04.094
日期:2014.8
mono- and di(substituted)-1,2,4-triazine derivatives containing thiophene and furan rings are described. Heteroaromatic rings were provided using palladium-catalyzed cross-coupling reaction between 3-alkylsulfanyl-5-acyl-1,2,4-triazines or 5-cyano-3-alkylsulfanyl-1,2,4-triazines and heteroaromatic tin compounds. New compounds bearing masked acyl groups were also obtained. These reactions were optimized
描述了含有噻吩和呋喃环的新型单和二(取代)-1,2,4-三嗪衍生物的合成。使用3-烷基硫烷基-5-酰基-1,2,4-三嗪或5-氰基-3-烷基硫烷基-1,2,4-三嗪与杂芳族锡化合物之间的钯催化交叉偶联反应提供杂芳族环。还获得了带有掩蔽酰基的新化合物。这些反应经过优化以确定该方法的范围和局限性,并用于制备带有末端杂环的寡聚噻吩。