Acta Crystallographica Section E (Aug 2009)

5-[3-(2,5-Dimethoxyphenyl)prop-2-enylidene]-1,3-diethyl-2-thioxohexahydropyrimidine-4,6-dione

  • Abdullah Mohamed Asiri,
  • Salman A. Khan,
  • Seik Weng Ng

DOI
https://doi.org/10.1107/S1600536809026099
Journal volume & issue
Vol. 65, no. 8
pp. o1820 – o1820

Abstract

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1,3-Diethyl-2-thiobarbituric acid reacts with 2,5-dimethoxybenzaldehyde to form the title Knoevenagel product, C19H22N2O4S. In the compound, the two six-membered rings at either end of the three-membered –CHCHCH– chain are nearly coplanar with this fragment (r.m.s. deviation of the two six-membered rings and the three chain atoms = 0.08 Å).