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Synthesis and structural evidence for new diimidazo-[1,5-a:1′,5′-d] pyrazinediones

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Abstract

The synthesis of derivatives of 5H, 10H-diimidazo [1,5-a:l′,5′-d] pyrazine-5,10-dione is described. The mechanism of the reaction is discussed and the chemical, spectral and X-ray data giving the evidence of the structure of these compounds are presented. X-ray studies were carried out on compound6c (C24H22N6O2) witha=9.250(3),b=11.879(3),c=10.250(3),Z=2 and space groupP21/a. The structure was solved using direct methods and refined by weighted full-matrix least squares. The refinement, based on 990 reflections withI≥2.5σ(I), converged to a finalR of 0.041 andR w=0.036.

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Authors and Affiliations

  1. Department of Organic Chemistry, Faculty of Pharmacy, School of Medicine, Grodzka 9, 50-137, Wrocław, Poland

    Krzysztof Burak & Zdzisław Machoń

  2. Institute of Chemistry, University of Wrocław, F. Joliot-Curie Street 14, 50-383, Wrocław, Poland

    Tadeusz Głowiak

Authors
  1. Krzysztof Burak
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  2. Zdzisław Machoń
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  3. Tadeusz Głowiak
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Burak, K., Machoń, Z. & Głowiak, T. Synthesis and structural evidence for new diimidazo-[1,5-a:1′,5′-d] pyrazinediones. Journal of Crystallographic and Spectroscopic Research 22, 665–671 (1992). https://doi.org/10.1007/BF01160983

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  • DOI: https://doi.org/10.1007/BF01160983

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