PYRAZOLE SYNTHESIS BY COUPLING OF CARBOXYLIC ACID DERIVATIVES AND ENAMINES
申请人:Westfaelische Wilhelms Universitaet Muenster
公开号:US20130204011A1
公开(公告)日:2013-08-08
A method of synthesizing Pyrazoles by means of the oxidative conversion of Enamines with suitable N-containing carboxylic acid derivatives in the presence of copper ions and 2-picolinic acid derivatives is provided.
Pyrazol-Synthese durch Kupplung von Carbonsäurederivaten und Enaminen
申请人:Westfälische Wilhelms-Universität Münster
公开号:EP2657228A1
公开(公告)日:2013-10-30
Die vorliegende Erfindung beschreibt ein neuartiges Syntheseverfahren von Pyrazolen durch oxidative Umsetzung von Enaminen mit geeigneten N-haltigen Carbonsäurederivaten in Gegenwart von Kupferionen und 2-Picolinsäurederivaten.
An efficient copper-catalyzed formation of highly substituted pyrazoles using molecular oxygen as the oxidant
作者:Mamta Suri、Thierry Jousseaume、Julia J. Neumann、Frank Glorius
DOI:10.1039/c2gc35476d
日期:——
An efficient Cu-catalyzed formation of tetra-substituted pyrazoles is reported. In this atom economic process, readily available enamines and nitriles are reacted by C–C and N–N bond formation. Oxygen has been successfully used as the oxidant, which has important economic and environmental advantages. A broad scope of enamines and nitriles can be utilized in this process.