P. Gros et Y. Fort, DIRECT SYNTHESIS OF UNSYMMETRICAL BIS-HETEROCYCLES FROM 2-HETEROSUBSTITUTED 6-LITHIOPYRIDINES, Journal of the Chemical Society. Perkin transactions. I (Print), (21), 1998, pp. 3515-3516
Unsymmetrical bis-heteroaromatic compounds have been synthesized by nu
cleophilic coupling of C-6 lithiated 2-heterosubstituted pyridines wit
h various heterocycles.