Selective catalytic Hofmann N-alkylation of poor nucleophilic amines and amides with catalytic amounts of alkyl halides
作者:Qing Xu、Huamei Xie、Er-Lei Zhang、Xiantao Ma、Jianhui Chen、Xiao-Chun Yu、Huan Li
DOI:10.1039/c6gc00938g
日期:——
A selective Hofmann N-alkylation reaction of amines/amides catalytic in alkylhalides is achieved by using alcohols as the alkylating reagents, affording mono- or di-alkylated amines/amides in high selectivities.
Reactions between various benzyl alcohols or tert-butyl alcohol and nitriles were carried out in the presence of catalytic amounts (usually 10–20 mol-%) of o-benzenedisulfonimide as a Bronsted acidcatalyst; the reaction conditions were mild and the yields of amides were good. The catalyst was easily recovered and purified, ready to be used in further reactions, with economic and ecological advantages
Polyvinylpolypyrrolidone-supported boron trifluoride: a high-loaded, polymer-supported Lewis acid for the Ritter reaction
作者:Moslem Mansour Lakouraj、Masoud Mokhtary
DOI:10.1007/s00706-008-0007-4
日期:2009.1
AbstractA Mild and efficient method for preparing amides by reaction of nitriles with benzhydrol and tertiary alcohols is described using polyvinylpolypyrrolidone-supported borontrifluoride. Selective amidation of benzhydrol in the presence of primary benzyl alcohols was also achieved. Graphical abstract
Peroxidation of C–H Bonds Adjacent to an Amide Nitrogen Atom under Mild Conditions
作者:Hui Yu、Jie Shen
DOI:10.1021/ol5012168
日期:2014.6.20
Under mild conditions, the oxidative functionalization of C–Hbondsadjacent to an amide nitrogen atom was achieved. tert-Butylperoxyamido acetal was obtained in high yields and could be further converted into α-substituted amides by treatment with Grignard reagents.
A facile access for the C-N bond formation by transition metal-free oxidative coupling of benzylic C-H bonds and amides
作者:Jie Liu、Heng Zhang、Hong Yi、Chao Liu、Aiwen Lei
DOI:10.1007/s11426-015-5381-2
日期:2015.8
as the oxidant, we communicate an efficient oxidative C-N coupling of benzylic C-H bonds with amides to afford a series of amination products in good yields. A wide range of functional groups as well as various sulfonamides and carboxamides are well tolerated. Moreover, this reaction involves both the challenging C-H functionalization and C-N bond formation.