Cycloaddition of hydrazones and 1,2-diarylalkynes promoted by t-BuOK/DMF:A convenient synthesis of tetraarylpyrazoles

摘要

A facile synthesis of tetraarylpyrazoles has been developed via t-BuOK/DMF promoted intermolecular cycloaddition of hydrazones and 1,2-diarylalkynes. A possible reaction pathway via a hydrazone radical is proposed.