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Synthesis and Characterization of Some New 2-Aminobenzothiazole Derivatives | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 23, Issue 5, 2012, Pages 105-118 | ||
| Author | ||
| Souad J. Lafta | ||
| Abstract | ||
| Compound S1 (2-aminobenzothiazole) was prepared through the condensation of aniline with amoniumthiocyanate in presence of bromine as a catalyst[3],its derivatives were synthesized through four different lines as follows . 1: 2-aminobenzothiazole was treated with m-nitro banzaldehyde in absolute ethanol to obtain shiff,s base S2 . Shiff,s base was treated with succinic anhydride in dry benzene to obtain a compound with seven membered heterocyclic ring S3 . Compound S2 was treated with mercaptoacetic acid in ethanol to obtain a compound with five membered heterocyclic ring S4. 2: 2-aminobenzothiazole was treated with p-chlorophenylisothiocyanate to obtain thiourea derivative compound S5 and the later was treated with chloroacetic acid to obtain a compound with two thiazole rings compound S6. 3 : 2-aminobenzothiazole was treated with two different anhydrides (succinic anhydride & phthalic anhydride) to obtain 2-aminobenzothiazole derivatives with carboxylic acid moiety S7a-b and these two compounds were treated with o-phenylenediamine to obtain heterocyclic compounds with imidazole ring S8a-b. 4 : 2-aminobenzothiazole was treated with chloroacetyl chloride to obtain compound S9 which was treated with different primary and secondary aromatic amines to obtain different amide derivatives S10a-e . | ||
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