Acs. Reddy et al., A NEW SYNTHETIC ROUTE TO FLUORINATED PYRAZOLO[3,4-B]PYRIDINES AND THEIR USE IN THE PREPARATION OF NOVEL PYRIDO[2',3' 3,4]PYRAZOLO[1,5-A] PYRIMIDINES/, Journal of fluorine chemistry, 86(2), 1997, pp. 127-130
A single-step synthesis of romethyl-6-substituted-1H-pyrazolo[3,4-b]py
ridines (7) from -acetamido-3-cyano-4-trifluoromethyl-6-substituted py
ridines (6) is described, and their use in the synthesis of novel pyri
do[2',3':3,4] pyrazolo[1,5-a] pyrimidines (8) under microwave irradiat
ion outlined. (C) 1997 Elsevier Science S.A.