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http://nopr.niscpr.res.in/handle/123456789/13052| Title: | A convenient synthesis of ethyl furo[2,3-h] flavone/chromone-8-carboxylates |
| Authors: | Reddy, S Satyanarayana Venkati, M Rao, Y Jayaprakash Sharma, Kamalesh K Krupadanam, G L D |
| Keywords: | 8-Formyl-7-hydroxyflavones/chromone;Tetrabutyl¬ammoniumbromide;Diethyl bromo malonate;Ethyl bromoacetate |
| Issue Date: | Nov-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The reaction of 8-formyl-7-hydroxyflavones/chromone 2a-i with diethyl bromomalonate in the presence of K2CO3/toluene and tetrabutylammoniumbromide (TBAB) as a phase transfer catalyst under nitrogen atmosphere affords ethyl furo[2,3-h]flavone-8-carboxylates 3a-h and ethyl 2-(2'-furyl)-3-methyl-furo[2,3-h]chromone-8-carboxylate 3i (Method A). The reaction of 2a-i with ethyl bromo acetate in powdered K2CO3/dioxane affords the same products 3a-i (Method B). |
| Page(s): | 1671-1676 |
| ISSN: | 0975-0983(Online); 0376-4699(Print) |
| Appears in Collections: | IJC-B Vol.50B(11) [November 2011] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 50B(11) 1671-1676.pdf | 86.88 kB | Adobe PDF | View/Open |
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