An efficient and inexpensive synthesis of N-substituted amides from the Ritter reaction of nitriles with esters catalyzed by Fe(ClO4)3·H2O is described. Fe(ClO4)3·H2O is an economically efficient catalyst for the Ritter reaction under solvent-free conditions. Reactions of a range of esters (benzyl, sec-alkyl, and tert-butyl esters) with nitriles (primary, secondary, tertiary, and aryl nitriles) were
Highly Efficient Copper-Catalyzed Amidation of Benzylic Hydrocarbons Under Neutral Conditions
作者:Eva-Louise Howard、Norman Guzzardi、Viliyana G. Tsanova、Angeliki Stika、Bhaven Patel
DOI:10.1002/ejoc.201701759
日期:2018.2.14
A ligand free method has been developed for the amidation of benzylichydrocarbons. A range of benzylicamides has been prepared with the use of dicumyl peroxide and a copper catalyst in good to excellent yields.
Nickel-Catalyzed Phosphine Free Direct N-Alkylation of Amides with Alcohols
作者:Jagadish Das、Debasis Banerjee
DOI:10.1021/acs.joc.7b03215
日期:2018.3.16
Herein, we developed an operational simple, practical, and selective Ni-catalyzed synthesis of secondary amides. Application of renewable alcohols, earth-abundant and nonprecious nickel catalyst facilitates the transformations, releasing water as byproduct. The catalytic system is tolerant to a variety of functional groups including nitrile, allylic ether, and alkene and could be extended to the synthesis
The direct synthesis of N-alkylated amides via a tandem hydration/N-alkylation reaction from nitriles, aldoximes and alcohols
作者:Nana Wang、Xiaoyuan Zou、Juan Ma、Feng Li
DOI:10.1039/c4cc02742f
日期:——
A novel strategy for the direct synthesis of N-alkylatedamidesfrom nitriles, aldoximes and alcohols was proposed and accomplished in the presence of a Cp*Ir complex.