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NMR Determination of the Structure of Azolopyrimidines Produced from Reaction of Bidentate Electrophiles and Aminoazoles

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NMR Determination of the Structure of Azolopyrimidines Produced from Reaction of Bidentate Electrophiles and Aminoazoles

Huwaida M. E. Hassaneena, Hamdi M. Hassaneena, Sherif F. M. Khirya, and Richard M. Pagnib

aChemistry Department, Faculty of Science, Cairo University, Giza, A. R. Egypt

bDepartment of Chemistry, University of Tennessee, Knoxville, TN, USA Reprint requests to Dr. H. M. E. Hassaneen. E-mail: huwaidah@hotmail.com Z. Naturforsch.2008,63b,217 – 222; received September 20, 2007

A variety of aminoazoles were reacted with bidentate electrophiles producing azolopyrimidines.

The regioselectivity of the nucleophilic attack could be defined from the13C chemical shift of the pyrimidine carbons and through NOE experiments.

Key words:Aminoazoles, NOE Experiment, Azolopyrimidines, Enaminonitrile

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