作者:Yu-Huang Wang、Jian-Liang Ye、Ai-E Wang、Pei-Qiang Huang
DOI:10.1039/c2ob25901j
日期:——
We have developed a one-pot method for the direct intermolecular reductive hydroxyalkylation or alkylation of amines using lactones or esters as the hydroxyalkylating/alkylating reagents. The method is based on the in situ amidation of lactones/esters with DIBAL-H–amine complex (for primary amines) or DIBAL-H–amine hydrochloride salt complex (for secondary amines), followed by reduction of the amides
我们已经开发出一种一锅法,使用内酯或酯作为羟烷基化/烷基化试剂,直接进行胺的分子间还原性羟烷基化或烷基化。该方法基于内酯/酯与DIBAL-H-胺络合物(对于伯胺)或DIBAL-H-胺盐酸盐复合物(对于仲胺)原位酰胺化,然后将酰胺还原成过量的DIBAL-H。与用DIBAL-H还原生成醛的Weinreb酰胺不同,原位形成的Weinreb酰胺的还原产生了胺。而且,该方法不仅限于Weinreb酰胺,它也适用于其他酰胺一般。建议采用合理的机制解释反应的结果。