Browsing by Author "Bakar, M. A. A"

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    SYNTHESIS AND FLUORESCENCE CHARACTERISTICS OF 2-A-ANILINOPURINE, 2-/VPIPERIDINOPURINE, 6-A-ANILINOPURINE AND 6-A-PIPERIDINOPURINE
    (FACULTY OF NATURAL AND APPLIED SCIENCE NASARAWA STATE UNIVERSITY, KEFFI., 2008-08-01) Abdullah, Z.; Bakar, M. A. A; Idris, A. Mohd
    2-Fluoropurine was prepared from 2aminopurine through a diazotization reaction, followed by treatment with Jluoroboric acid. 2-Aminopurine was obtained from a series of reactions, using 5-nitrouracil as the starting material. 2- N-Piperidino and 2- N-anilinopurines were obtained by treating 2-fluoropurine with piperidine and aniline respectively. 6-N-Piperidino and 6-N-anilinopurines were obtained by treating 6-chloropurine with piperidine and aniline. Fluorescence studies were carried out in various solvents and maximum fluorescence was observed in 75% ethanol. 2- Aminopurine showed the highest fluorescence intensity, followed by 2-N-anilino and 2-N-piperidinopurines. 6- Substituted purines showed stronger fluorescence intensities compared to 2-substitutedpurines