@article{article3115af37,
title   = {Synthesis of 5-Cyanopyrazolo[3,4-b]pyridines in the reaction of 5-Amino-3-methyl-1-phenylpyrazole with Arylidene derivatives of malonodinitrile and Ethyl Cyanoacetate},
author = {Quiroga, Jairo and Alvarado, Mario and Insuasty, Braulio and Moreno, Rodolfo and Ravina, Enrique and Estevez, Isabel and Santos, Regina Helena de Almeida},
year = {1999},
doi = {10.1002/jhet.5570360533},
journal   = {Journal of Heterocyclic Chemistry}
}