E. A. Bakhite
Dec 1, 2001
Citations
1
Influential Citations
9
Citations
Journal
Journal of The Chinese Chemical Society
Abstract
3-Amino-1H-pyrazolo[3,4-b]quinoline (2) was reacted with benzaldehyde, acetylacetone, ethyl acetoacetate and/or phenyl isothiocyanate to give compounds 3, 4, 5 and 6, respectively. The interaction of 6 with some α-haloesters and/or α-haloketones produced the corresponding thiazolidinones 7a-c and thiazolines 9a-d. 1H-Pyrazolo[3,4-b]quinoline-3-diazonium chloride (11) was coupled with some active methylene compounds to give the corresponding hydrazono compounds 12a,b and 13 which, in turn were cyclized into the corresponding triazinopyrazoloquinolines 14a,b and 15 by heating in acetic acid. 3-Aminothieno[2,3-b]quinoline-2-carbohydrazide (19) and 3-amino-2-(1H-benzimidazol-2-yl)thieno[2,3-b]quinoline (21) were prepared and employed as key intermediates for synthesizing the second class of the title compounds.