A convenient synthesis of ethyl furo[2,3-<i style="">h</i>] flavone/chromone-8-carboxylates
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Reddy, S Satyanarayana
Venkati, M Rao, Y Jayaprakash Sharma, Kamalesh K Krupadanam, G L D |
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| Date |
2011-11-03T11:20:20Z
2011-11-03T11:20:20Z 2011-11 |
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| Identifier |
0975-0983(Online); 0376-4699(Print)
http://hdl.handle.net/123456789/13052 |
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| Description |
1671-1676
The reaction of 8-formyl-7-hydroxyflavones/chromone <b>2a-i </b>with diethyl bromomalonate in the presence of K<sub>2</sub>CO<sub>3</sub>/toluene and tetrabutylammoniumbromide (TBAB) as a phase transfer catalyst under nitrogen atmosphere affords ethyl furo[2,3-<i style="">h</i>]flavone-8-carboxylates <b style="">3a-h </b>and ethyl 2-(2'-furyl)-3-methyl-furo[2,3-<i style="">h</i>]chromone-8-carboxylate <b>3i</b><b style=""> </b>(Method A).<b style=""> </b>The reaction of <b style="">2a-i</b> with ethyl bromo acetate in powdered K<sub>2</sub>CO<sub>3</sub>/dioxane affords the same products <b>3a-i </b>(Method B). |
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| Language |
en_US
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| Publisher |
NISCAIR-CSIR, India
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Source |
IJC-B Vol.50B(11) [November 2011]
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| Subject |
8-Formyl-7-hydroxyflavones/chromone
Tetrabutyl¬ammoniumbromide Diethyl bromo malonate Ethyl bromoacetate |
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| Title |
A convenient synthesis of ethyl furo[2,3-<i style="">h</i>] flavone/chromone-8-carboxylates
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| Type |
Article
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