Sequential palladium catalyzed coupling–cyclocondensation–coupling (C³) four-component synthesis of intensively blue luminescent biarylsubstituted pyrazoles

Abstract

Highly blue-fluorescent 1-, 3-, and 5-biarylsubstituted pyrazoles can be efficiently prepared by a MW-assisted consecutive four-component synthesis based upon a sequential Pd-catalyzed Sonogashira coupling–condensation–Suzuki coupling (C³) process.