P. Tagdiwala, D. W. Rangnekar
Apr 24, 2007
Citations
0
Influential Citations
2
Citations
Journal
Journal of Chemical Technology & Biotechnology
Abstract
5-Amino-3-methyl-1-phenylpyrazole (1) has been condensed with EMME (2a) and EMCA (2b) and the resulting ethyl 5-aminoacrylates (3a–b) cyclized to pyrazolo[3,4,-b]pyridines (4a–b). 3-Methyl-1-phenylpyrazol-5-yl diazonium salt (7), prepared from (1) was coupled with tobias acid (8) and 2-methoxy-6-aminoquinoxaline (9) to get the corresponding O-aminoarylazo and heterylazo dyes (10) which were oxidatively cyclized to 2-N-(3-methyl-1-N-phenylpyrazol-5-yl)-1,2,3-triazolo[4,5-a] naphthalene and [4,5-f] quinoxaline derivative (11). The spectral properties of the compounds (4a–b, 5, 6, 11a–b) were studied.