An efficient three component one-pot synthesis of 5-amino-7-aryl-7,8-dihydro-[1,2,4] triazolo[4,3-a]-pyrimidine-6-carbonitriles |
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Authors: | Ablajan Keyume Kamil Wetengul Tuoheti Anagu Wan-Fu Sun |
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Institution: | College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China. ablajan209@hotmail.com |
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Abstract: | A series of novel 5-amino-7-aryl-7,8-dihydro-1,2,4] triazolo4,3-a]-pyrimidine-6-carbonitriles were synthesized by a one-pot reaction of 3-amino-1,2,4-triazole, malononitrile and aryl aldehydes in the presence of 20 mol% NaOH in ethanol under heating or ultrasonic irradiation. The structures of the target compounds were confirmed by inspection of their (1)H- NMR, (13)C-NMR, IR and MS spectra. The advantages of this method are short reaction times, good yields, high selectivity and operational simplicity. |
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