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Title: One step cyclocondensation of (thio)barbituric acid with chalcones in glacial acetic acid and phosphorous pentoxide, Part-I
Authors: Akhter, Kawsari
Ahmed, S. Mosaddeq
Halim, Md. Ershad
Kader, M. Abdul
Jahan, Khorshada
Romman, U. K. R.
Ahmed, M. Giasuddin
Keywords: Arylideneacetophenone, barbituric acid, thiobarbituric acid, cyclocondensation
Issue Date: Jul-2016
Publisher: BCSIR, Dhaka
Series/Report no.: 51(2);Page 129-138
Abstract: Some new 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) (3a-h) have been synthesized in one-step by 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-h have been determined by UV, IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses. The compounds 3a-h do not seem to be available in the literature.
ISSN: 0304-9809
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