NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.50B [2011] >
IJC-B Vol.50B(07) [July 2011] >


Title: A one-step synthesis of 5,7-diaryl-1,5-dihydro (or 1,2,3,5-tetrahydro)-pyrano [2,3-d]pyrimidin-2,4-diones (or 2-thioxo-4-ones)
Authors: Ahmed, M Giasuddin
Romman, U K R
Akhter, Kawsari
Halim, Md Ershad
Rahman, Md Mahbubur
Ahmed, S Mosaddeq
Issue Date: Jul-2011
Publisher: NISCAIR-CSIR, India
Abstract: A one-step synthesis of 5,7-diaryl-1,5-dihydro-pyrano[2,3-d]pyrimidin-2,4-diones, 3a-c and 5,7-diaryl-2-thioxo-1,2,3,5-tetra¬≠hydropyrano[2,3-d]pyrimidin-4-ones, 3d-g has been achieved by the cyclocondensation of barbituric acid or thiobarbituric acid 1 with arylideneacetophenones, 2a-d in glacial acetic acid in the presence of phosphorous pentoxide. The structures of the compounds 3a-g have been determined by their UV, IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses.
Page(s): 946-948
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.50B(07) [July 2011]

Files in This Item:

File Description SizeFormat
IJCB 50B(7) 946-948.pdf61.46 kBAdobe PDFView/Open
 Current Page Visits: 613 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 624967 since 06-Feb-2009  Last updated on 28-Nov-2014Webmaster: nopr@niscair.res.in