I. Wolska, F. Herold
Nov 1, 2000
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0
Influential Citations
2
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Journal
Zeitschrift für Naturforschung B
Abstract
The X-ray crystal structure determination of 4-(4'-fluorophenyl)hexahydro-1H,3H-pyrido[ 1,2-c]pyrimidine-1,3-dione (5) and 4-(4'-chlorophenyl)hexahydro-1H,3H-pyrido [1,2-c]- pyrimidine-1,3-dione (8) is reported. The crystal structures show the formation of centrosymmetric dimers via intermolecular N-H···O hydrogen bonds. The saturated ring adopts a slightly distorted sofa conformation both in 5 and in 8. In either compound the planar phenyl ring is twisted with respect to the pyrimidine-1,3-dione fragment.