An FeCl₃-mediated cascade coupling/decarbonylative annulation reaction for the efficient construction of 2-(trifluoromethyl)quinazolin-4(3H)-ones has been developed. This transformation employs readily available isatins and trifluoroacetimidoyl chlorides as the starting materials, providing a facile and practical route to diverse biologically relevant quinazolin-4(3H)-one derivatives. A plausible reaction pathway has been proposed based on the mechanistic observations.

中文翻译：

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FeCl3介导的从靛红和三氟乙酰亚胺基氯的合成2-（三氟甲基）喹唑啉-4（3H）-酮。

已经开发出FeCl ₃介导的级联偶合/脱羰环化反应，用于有效地构建2-（三氟甲基）喹唑啉-4（3 H）-one。该转化采用容易获得的靛红和三氟乙酰亚胺基氯作为起始原料，为各种生物学相关的喹唑啉-4（3H）-一衍生物提供了简便实用的途径。基于机理的观察已经提出了合理的反应途径。