Synthesis of β-Aminoenones via Cross-Coupling of In-Situ-Generated Isocyanides with 1,3-Dicarbonyl Compounds
作者:Xingxing Ma、Yao Zhou、Qiuling Song
DOI:10.1021/acs.orglett.8b01888
日期:2018.8.17
An efficient and practical strategy for the synthesis of β-aminoenones from a three-component reaction was developed. Ethyl bromodifluoroacetate serves as a C1 source in this strategy, forming isocyanides in situ with primary amines. This reaction represents the first example of utilization of readily available starting materials to generate isocyanides in situ and sequentially fully converted to β-aminoenones
提出了一种由三组分反应合成β-氨基烯酮的有效而实用的策略。溴二氟乙酸乙酯在此策略中用作C1来源,与伯胺原位形成异氰化物。该反应代表了利用容易获得的原料就地生成异氰化物并依次完全转化为β-氨基烯酮的第一实例,从而避免了副产物亚胺和过度插入产物的产生。机理研究表明,该方法涉及两个C(sp 3)-F键的活化和异氰酸酯的形成,这可能同时促进异氰酸酯化学和氟化学的发展。