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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Vardhan, V Aditya | - |
| dc.contributor.author | Kumar, V Ravi | - |
| dc.contributor.author | Rao, V Rajeswar | - |
| dc.date.accessioned | 2013-03-03T20:48:51Z | - |
| dc.date.available | 2013-03-03T20:48:51Z | - |
| dc.date.issued | 1999-01 | - |
| dc.identifier.uri | http://hdl.handle.net/123456789/16188 | - |
| dc.description | 18-23 | en_US |
| dc.description.abstract | 3-Methyl/ethyl-5-mereapto-s-triazoles 2 on condensation with either 3-(2 -bromoacetyl)coumarins or with substituted 3-acetyl comarins using bromine in the presence of trichloro-(N,N'-ethylene-bis-aminobenzamide) lanthanum and samarium as a catalyst, followed by cyclization of the intermediate 3-alkyl-5-coumarinacyl-thio-s-triazole 3 using PPA furnish 3-alkyl-5-coumarinylthiazolo[3,2-b]-s-triazoles 4 and not the isomeric 3-alkyl-5-coumarinylthiazolo [2,3 –c]-s-triazoles 6. 2-Acetyl- or 2- propanoylhydrazino-4-coumarinyl-thiazolo hydrobromides 5, obtained from the reaction of acetyl/propanoyl thiosemicarbazides 1 with either substituted 3-(2-bromuacetyl) coumarins or with bromine and substituted 3-acetylcoumarin using trichloro(N,N' -ethylene-bis-aminobenzamide)lanthanum (III) and samarium (III) as a catalyst, on treatment with phosphoryl chloride undergo facile cyclization yielding 5-alkyl-5-coumarinylthiazolo[2,3 –c]-s-triazole 6. | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | NISCAIR-CSIR, India | en_US |
| dc.rights |  CC Attribution-Noncommercial-No Derivative Works 2.5 India | en_US |
| dc.source | IJC-B Vol.38B(01) [January 1999] | en_US |
| dc.title | Condensation of 3-methyl/ethyl-5-mercapto-s-triazole with 3-acetylcoumarin and its derivatives | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | IJC-B Vol.38B(01) [January 1999] | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 38B(1) 18-23.pdf | 1.14 MB | Adobe PDF | View/Open |
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