Pd-Catalyzed three-component decarboxylative coupling reactions between alkylidene pyrazolones, allyl carbonates and active methylene compounds.

ABSTRACT

Under the catalysis of Pd2(dba)3·CHCl3/(±)-L5 in THF at room temperature, the three-component decarboxylative coupling reactions among alkylidene pyrazolones, allyl carbonates and active methylene compounds proceeded readily and furnished the desired products in acceptable chemical yields. The chemical architecture of the obtained products was unambiguously confirmed by single crystal X-ray analysis.