Mild Access to N-Formylation of Primary Amines using Ethers as C1 Synthons under Metal-Free Conditions
作者:Mohana Reddy Mutra、Ganesh Kumar Dhandabani、Jeh-Jeng Wang
DOI:10.1002/adsc.201800783
日期:2018.10.18
A new synthetic protocol has been developed for the synthesis of N‐formamide derivatives using ethers as a C1 synthon under metal‐free reaction conditions. The reaction is proposed to proceed through C−H functionalization, C−O cleavage, and C−N bond formation. This protocol is applicable to a variety of primary amines resulting in N‐formamides in moderate to good yields. 1,4‐dioxane was chosen as best
已经开发了一种新的合成方案,用于在无金属反应条件下使用醚作为C1合成子来合成N-甲酰胺衍生物。该反应被提议通过CH官能化,CO裂解和CN键形成来进行。该方案适用于各种伯胺,可产生中等至良好收率的N-甲酰胺。在用各种醚筛选后,选择1,4-二恶烷作为最佳的C1合成子。机理研究表明,该反应通过自由基途径进行。使用α-氨基酮时,形成的是α-烷基化产物,而不是甲酰化产物。通过在标准条件下用四甲基乙二胺(TMEDA)代替二恶烷,也可得到中等收率的N-甲酰胺衍生物。