New Derivatives of 1H-imidazo[4,5-b]pyridine-2(3H)- thione. Synthesis of Thiosemicarbazides and Their Cyclic Analogues
摘要:
A series of 2-(arylthiosemicarbazide)-imidazo[4,5-b]pyridines (6-9) were prepared by reaction of 2-(carbazoylalkylthio)-imidazo[4,5-b]pyridines (4 and 5) with selected arylisothiocyanates. The thiosemicarbazides 6 and 7 were cyclized with 2-bromoacetophenone to give the derivatives of imidazo[4,5-b]pyridine 10 and 11. Compounds (2-11) were characterized by elemental analysis as well as IR and H-s1 NMR spectroscopy.
New Derivatives of 1H-imidazo[4,5-b]pyridine-2(3H)- thione. Synthesis of Thiosemicarbazides and Their Cyclic Analogues
摘要:
A series of 2-(arylthiosemicarbazide)-imidazo[4,5-b]pyridines (6-9) were prepared by reaction of 2-(carbazoylalkylthio)-imidazo[4,5-b]pyridines (4 and 5) with selected arylisothiocyanates. The thiosemicarbazides 6 and 7 were cyclized with 2-bromoacetophenone to give the derivatives of imidazo[4,5-b]pyridine 10 and 11. Compounds (2-11) were characterized by elemental analysis as well as IR and H-s1 NMR spectroscopy.