KMnO4-mediated oxidative C N bond cleavage of tertiary amines: Synthesis of amides and sulfonamides
作者:Zhang Zhang、Yong-Hong Liu、Xi Zhang、Xi-Cun Wang
DOI:10.1016/j.tet.2019.03.047
日期:2019.5
KMnO4-mediated oxidative CN bond cleavage of tertiaryamines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.
Free carboxylic acids are converted into amides in moderate to high yields in the presence of a stoichiometric amount of trimethylaluminium and amines at 90 ËC after 1 hour.
自由羧酸在三甲基铝和胺的存在下,以适中至高产率,在90摄氏度下经过1小时后转化为酰胺。
Reverse Polarity Reductive Functionalization of Tertiary Amides via a Dual Iridium-Catalyzed Hydrosilylation and Single Electron Transfer Strategy
作者:Tatiana Rogova、Pablo Gabriel、Stamatia Zavitsanou、Jamie A. Leitch、Fernanda Duarte、Darren J. Dixon
DOI:10.1021/acscatal.0c03089
日期:2020.10.2
amide buildingblocks has been developed. By combining Vaska’s complex-catalyzed tertiary amide reductive activation and photochemical single electron reduction into a streamlined tandem process, metastable hemiaminal intermediates were successfully transformed into nucleophilic α-amino free radical species. This umpolung approach to such reactive intermediates was exemplified through coupling with
A novel and practical amide bond formation method has been developed without the need for any metals. This method provides a novel route for amide bond formation, in the presence of an nBu4NI/TBHP catalyst system, from readily available aldehydes and aromatic tertiary amines.