environmentally benign reagent. The mild conditions in this system enable the formylation of a variety of amino acid derivatives including stereochemically labile phenylglycine ethyl ester with 96% ee. This new protocol could also be applied to simple amines including weakly basic aniline derivatives, giving various primary and secondary formamides.
使用原
硅酸四乙酯(TEOS),一种低成本且对环境无害的试剂,可在温和条件下以
甲酸为甲酰源合成N-甲酰胺。该系统中的温和条件使得能够将多种
氨基酸衍
生物进行甲酰化,包括立体
化学不稳定的苯基甘
氨酸
乙酯与96%ee。该新方案还可以应用于包括弱碱性
苯胺衍
生物在内的简单胺,从而生成各种伯甲酰胺和仲甲酰胺。