Synthesis of Some New Pyrazolopyridines, Pyrazolothienopyridines, Pyrazolopyridothienopyrimidines and Pyrazolopyridothienotriazines
作者:A.-B. A. G. Ghattas、A. Khodairy、M. A. Abd-Rahman、S. Younes
DOI:10.1080/10426500307843
日期:2003.8.1
Pyrazolo[3,4-b]pyridine derivative 3a was prepared and reacted with methyl iodide to give 4 or 5 depending on reaction conditions. Oxidation of 3a with iodine produced the corresponding disulphide derivative 6 , whereas oxidation with KMnO 4 gave the corresponding oxo derivative 7 . Oxidation of 4 afforded the corresponding sulphone derivative 8 , which on boiling in NaOH solution gave 7 . The reaction of compound