A concise and efficient method for the synthesis of alkynyl/benzoyl-functionalized quinolines through TfOH-promoted cascade 1,4-conjugate addition/intramolecular annulation/aromatization process is established.
Electrosynthesis of Tetrasubstituted Sulfonated Pyrazoles through Iodide‐Mediated Multicomponent Coupling
作者:Kingshuk Mahanty、Sayan Ghosh、Abhishek Dubey、Suman De Sarkar
DOI:10.1002/adsc.202400396
日期:2024.7.16
An electrochemical protocol for synthesizing <i>tetra</i>‐substituted sulfonated pyrazoles is developed. The notable feature of this method is the electrocatalytic generation of an active iodine species, which enables the direct use of 1,3 dicarbonyls as the reactant and also eliminates the necessity for external electrolytes. A wide range of functionalities are compatible under the electrocatalytic condition, resulting good to excellent production of the desired pyrazole derivatives. Detailed synthetic and electrochemical studies enlighten the electrocatalytic pathway.