A novel catalytic system is reported for the construction of quinazolinones via the carbon-supported acid-catalyzed cascade coupling of isatoic anhydrides with amides and aldehydes. Subsequent selective hydrosilylation of the quinazolinones using a hydrogen-transfer strategy was also explored to provide dihydroquinazolines with structural diversity. The developed methodology proceeds with a broad substrate
报道了一种新的催化体系,该结构通过碳负载的isatoic酸酐与酰胺和醛的酸催化级联反应来构建
喹唑啉酮。随后还探索了使用氢转移策略对
喹唑啉酮进行选择性加氢
硅烷化以提供具有结构多样性的二氢
喹唑啉。所开发的方法具有广泛的底物范围,出色的官能团耐受性,并利用了可重复使用的催化剂和空气作为绿色氧化剂。