ChemInform Abstract: Cu‐Catalyzed Aerobic Oxidative Cyclization of Guanidylpyridines and Derivatives.

Abstract

amino-[1,2,4]triazolo[1,5-a]pyridine structures and analogues such as (X) and (XII). A wide scope is possible where a broad spectrum of substrates is tolerated. Whereas the chloro-substituted substrates (III) react without any problem, no conversion is observed with the bromo compounds. If an iodine substituent is present [cf. (V)], CuI has to be used instead of CuBr. -(BARTELS*, B.; BOLAS, C. G.; CUENI, P.; FANTASIA, S.; GAENG, N.; TRITA, A. S.; J.