Mild, Stereoselective, and Highly Efficient Synthesis of<i>N</i>-Acylhydrazones Mediated by CeCl<sub>3</sub>·7H<sub>2</sub>O in a Broad Range of Solvents
作者:José Maurício dos Santos Filho
DOI:10.1002/ejoc.201402609
日期:2014.10
This method uses a minimal catalytic amount of cerium(III), is stereoselective, and offers several unique features, such as compatibility with aryl, heterocyclic, alkenyl, and sensitive functional groups as well as the ability to prepare N-acylhydrazones from highly hindered substrates. More strikingly, cerium(III) efficiently mediated the reaction with less reactive substrates such as diaryl and alkyl
Stereoselective, solvent free, highly efficient synthesis of aldo- and keto-N-acylhydrazones applying grindstone chemistry
作者:José Maurício dos Santos Filho、Savio Moita Pinheiro
DOI:10.1039/c7gc00730b
日期:——
A mild and efficientsynthesis of N-acylhydrazones has been developed, applying a simple grindstone procedure, leading to a library of 51 examples exhibiting a broad variety of structural features, 21 of them described for the first time in this paper. This methodology works without any organic solvent under the catalysis of acetic acid at room temperature, promotes the formation of essentially pure