Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/8966
Title: Synthesis of 2,3-<i style="">trans</i>-3,4-<i style="">trans</i>-2-aryl-3-alkyl/aryl chroman-4-ols
Authors: Venkati, M
Krupadanam, G L David
Issue Date: Mar-2005
Publisher: CSIR
Series/Report no.: <b>Int</b>.<b>Cl</b>.<b><sup>7</sup> C 07 D 311/30</b>
Abstract: <img src='/image/spc_char/alpha.gif' border=0>-Alkyl chalcones <b style="">3a-d</b> on acid catalyzed cyclization give a mixture of (±) <i style="">trans</i> and (±) <i style="">cis </i>2-aryl-3-alkylchroman-4-ones. <i style="">cis</i> <b style="">4a-d</b> are converted to <i style="">trans</i> <b style="">5a-d</b> by epimerization with dil. alkali. a-Aryl chalcones <b style="">3e-h</b> on acid catalyzed cyclization give (±) <i style="">trans</i> 2,3-diaryl-chroman-4-ones <b style="">5e-h</b>. On NaBH<sub>4</sub> reduction <b style="">5a-h </b>give (±) 2,3-<i style="">trans</i>-3,4-<i style="">trans</i>-2-aryl-3-alkyl/aryl- chroman-4-ols <b style="">6a-h</b>.
Description: 618-621
URI: http://hdl.handle.net/123456789/8966
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.44B(03) [March 2005]

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