本发明公开了一种可见光催化的 N ‑甲酰基酰胺化合物的制备方法,该方法中以LED灯作为光源提供能量,经济易得的二、三级酰胺作为反应底物,氯化铜为催化剂,氧气为氧化剂,市场可购买的盐酸为添加剂,硝基甲烷为溶剂。与现有技术相比较,本发明方法具有以下优点:1)采用绿色、温和、环境友好的可见光催化的反应模式;2)反应体系简单且底物范围广,芳香族和脂肪族酰胺均适用于该方法;3)氧气作为绿色的氧化剂;4)反应产率较高;5)操作比较简单;6)原料廉价易得。
Copper-Catalyzed Amidation of Acids Using Formamides as the Amine Source
作者:Ye-Xiang Xie、Ren-Jie Song、Xu-Heng Yang、Jian-Nan Xiang、Jin-Heng Li
DOI:10.1002/ejoc.201300543
日期:2013.9
Copper-catalyzedamidation of acids with formamides or acetamide for the selective synthesis of amides with the aid of 1,4-diazabicyclo[2.2.2]octane as the ligand and tert-butyl hydroperoxide as the oxidant is presented. This method is highly compatible with a wide range of acids, including alkyl acids, aryl acids, α,β-unsaturated acids, and amino acids.
Photochemical Regioselective C(sp<sup>3</sup>)–H Amination of Amides Using <i>N</i>-Haloimides
作者:Lei Pan、Joseph Elmasry、Tomas Osccorima、Maria Victoria Cooke、Sébastien Laulhé
DOI:10.1021/acs.orglett.1c00831
日期:2021.5.7
A metal-free regioselective C(sp3)–H amination of amides using N-haloimides in the presence of lithium tert-butoxide and visible light is presented herein. This photoexcited approach is straightforward, and it aminates a wide variety of amides under mild conditions without the use of photocatalysts, external radical initiators, or oxidants. A halogen-bonded intermediate between the tert-butoxide base
polyfluoroarenes with Grignard reagent was developed. A variety of polyfluoro di-, tri-, and even tetr-arylmethanes was efficiently prepared with good to excellent yields in the presence of Mg turnings via a one-pot procedure.