Crystal structure of ethyl 2-methyl-5,10-dioxo-4-phenyl-5,10-dihydro-4H-11-thia-1,4a-diaza-benzo[b]fluorene-3-carboxylate

Yegor Yartsev, Pavel Lyubashov, Vyacheslav Povstyanoy, Mykhailo Povstyaniy, Iryna Lebedyeva

Research output: Contribution to journalArticlepeer-review


The title compound, C24H18N2O4S, crystallizes in the orthorhombic P212121 space group, indicating the existence of only one enantiomer with an S configuration of the chiral center in the crystal phase. The dihydropyrimidine ring adopts a twist-boat conformation while the quinone ring is slightly non-planar. In the crystal, molecules are linked by weak C-H O and C-H S hydrogen bonds and C-H interactions. In addition, a short intermolecular S N contact of 3.250 (3) Å indicates an interaction between the S atom and the -system of the thiazole ring.

Original languageEnglish (US)
Pages (from-to)124-126
Number of pages3
JournalActa Crystallographica Section E: Crystallographic Communications
StatePublished - 2018
Externally publishedYes


  • Crystal structure
  • DHPM
  • Dihydropyrimidine
  • Dihydropyrimidine
  • Enantiomer

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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