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http://localhost:8080/xmlui/handle/123456789/1876| Title: | Facile synthesis of substituted 5-hydroxythio-7h-thieno[3,2-g] [1]benzothiopyran-7-ones |
| Authors: | Chandramouli, G.V.P Reddy, P.V. Prassana, B. |
| Keywords: | Friedel-Crafts Cyclization Demethylation Condensation Benzothiopyranones |
| Issue Date: | 2003 |
| Publisher: | Sulfur Letters |
| Citation: | 10.1080/0278611021000011965 |
| Abstract: | Lewis acid (BF 3 (OEt) 2 ) in dry diethyl ether mediated cyclization and demethylation of substituted 2-(2-methyl-3-methylsulfanyl-phenylsulfanyl)-1,2-diphenyl-ethanones (3a-e) at ambient temperature gave 7-methyl-2,3-diphenyl-6-thio-benzo[b]thiophenes (4a-e). Treatment of (4a-e) with substituted malonic acids furnishes the corresponding substituted 5-hydroxythio-7H-thieno[3,2-g][1] benzothiopyran-7-aones. These were characterized by their elemental, IR, 1 H NMR and mass spectral analysis |
| Description: | NITW |
| URI: | http://localhost:8080/xmlui/handle/123456789/1876 |
| Appears in Collections: | Chemistry |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Facile synthesis of substituted 5-hydroxythio-7h-thieno 3 2-g 1 benzothiopyran-7-ones.pdf | 246.93 kB | Adobe PDF | View/Open |
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