We have developed a fast and convenient method to prepare dihydroquinazolin-4(1H)-ones from anthranilamide and different aromatic aldehydes by using the Mukaiyama reagent. The reactions proceeded smoothly with a broad scope of substrates providing the expected products in good to excellent yields under with a low environmental factor and high atom economy. The metal-free condition and the ease of product isolation are the highlighted advantages in solving the issue of trace metal contamination in synthesized pharmaceuticals.

中文翻译：

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Mukaiyama的试剂促进了一锅无金属合成二氢喹唑啉酮的温和方案

我们已经开发了一种快速简便的方法，通过使用Mukaiyama试剂从邻氨基苯甲酰胺和不同的芳族醛制备二氢喹唑啉-4（1H）-酮。反应在宽范围的底物条件下顺利进行，从而在低环境因子和高原子经济性的情况下提供了预期的产物，具有良好或优异的收率。在解决合成药物中痕量金属污染的问题上，无金属条件和易于产品分离是其突出的优势。