SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM
Diazotization of 3-amino-2-cMoro pyridine (3) in the presence of dithizone (5) gave dphenyl-2-phenylazo-4H-pyrid[o3 ,2-e] [1,3,4] thiadiazine (6). Reaction of 2- chloro-3-nitropyridine (2, G=H) with (5) dfordd 4-phenyl -2-phenylazo -4Hpyrido [2,3-el [1,3,4] thiadiazine (7). Reduction of the latter w...
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| Format: | Article |
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| Language: | English |
| Published: |
University of Tehran
1998-06-01
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| Series: | Journal of Sciences, Islamic Republic of Iran |
| Online Access: | https://jsciences.ut.ac.ir/article_31469_2ec7a8af54550322a45fc0735889ba54.pdf |
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| Summary: | Diazotization of 3-amino-2-cMoro pyridine (3) in the presence of dithizone (5)
gave dphenyl-2-phenylazo-4H-pyrid[o3 ,2-e] [1,3,4] thiadiazine (6). Reaction of 2-
chloro-3-nitropyridine (2, G=H) with (5) dfordd 4-phenyl -2-phenylazo -4Hpyrido
[2,3-el [1,3,4] thiadiazine (7). Reduction of the latter with H gas in the
presence of Raney nickel gave the corresponding amino derivative (12). One pot
condensation and cyclization of the latter with phenacyl bromide gave a novel
heterocyclic system (13). |
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| ISSN: | 1016-1104 2345-6914 |