Dozens of strategies have been described for the synthesis of α-hydroxyamides over the years, but they share common drawbacks in terms of generality and tolerability, especially to acid labile functionalities. Here we report a truncated Passerini reaction suitable for the easy and mild preparation of functionalized α-hydroxyamides. In particular, this procedure is tolerant to acid sensitive protecting groups, which remain intact during the multicomponent reaction.

中文翻译：

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在Passerini反应中使用2-羟甲基苯甲酸作为有效的水替代物：直接获得α-羟酰胺

多年来，已经描述了用于合成α-羟基酰胺的数十种策略，但是它们在通用性和耐受性（尤其是对酸不稳定的功能性）方面具有共同的缺点。在这里，我们报告截短的Passerini反应，适用于轻松温和地制备官能化的α-羟基酰胺。特别地，该方法耐受酸敏感性保护基，其在多组分反应期间保持完整。