AbstractThe reactions of 3-substituted 5-aminopyrazoles with arylidenepyruvic acids and their synthetic precursors, pyruvic acid and aromatic aldehydes, were studied. Several different reaction pathways for these cyclocondensation reactions were established depending on the reaction conditions and building block selection. The formation of pyrazolo[3,4-b]pyridine-6-carboxylic acids as major products and related compounds was discussed from the mechanistic point of view. Biotage 微波合成儀 Initiator+ Biotage 微波合成儀 Initiator Biotage 微波合成儀 Initiator+ Robot 8 Biotage 微波合成儀 Initiator+ Robot 60