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SYNTHESIS OF 3-(1,2,3-THIADIAZOL-4-YL) AND 3-(6-HYDROXYTHIAZOLO [3,2-a] BENZIMIDAZOL-3-YL) COUMARINS

✍ Scribed by Kumar, V. Ravi; Rao, V. Rajeshwar


Book ID
111909988
Publisher
Taylor and Francis Group
Year
1997
Tongue
English
Weight
270 KB
Volume
130
Category
Article
ISSN
1042-6507

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## Abstract 3‐Acetylcoumarine was condensed with dimethylformamide dimethylacetal (DMFDMA) to yield the enaminone, which reacts readily with hydroxylamine and with hydrazines to yield coumarin‐3‐ylisoxazoles and coumarin‐3‐ylpyrazoles respectively. Reaction of the enaminone with benzamidine hydroch