Enthalpies of solution of purine and adenine in water and in dimethylsulfoxide

Kanbour, Fouad I.; Ahmed, J. K.; Derwish, G.A.W.

doi:10.1007/bf00653179

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…This is shown, for example, by comparing AH: --8 kJ mol-' for BzIm with the values for Bz, -0.3 kJ mol-', and for Im, -1.8 kJ mol-'. A similar situation has recently been observed for such transfers from water to methanol (18). However, if we take BzIm as the reference base, we can also discuss the AH: of the purines on the basis of group contributions.…”

Section: Discussionsupporting

confidence: 67%

Protonation of purines and related compounds in dimethylsulfoxide and water

Benoit¹,

Boulet²,

Séguin³

et al. 1985

Can. J. Chem.

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The ionization constants of the conjugated acids BH+ of purine, adenine, 9-methyladenine, adenosine, guanine, and hypoxanthine, and of the related compounds imidazole, N-methylimidazole, benzimidazole, and 4-amino-2,6-dimethylpyrimidine have been determined potentiometrically in Me2SO. The heats of solution and the heats of protonation of most of these bases have been obtained by calorimetry. Some additional determinations were carried out in water so that thermodynamic data in Me2SO and in water could be compared. Our discussion of the solvent effect on these data is largely based on a consideration of the enthalpies of transfer of B and BH+ and emphasizes the contrasting H-bonding properties of the solvents and of the functional groups on the solutes B and BH+.

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Section: Discussionsupporting

confidence: 67%

Protonation of purines and related compounds in dimethylsulfoxide and water

Benoit¹,

Boulet²,

Séguin³

et al. 1985

Can. J. Chem.

View full text Add to dashboard Cite

show abstract

“…1 Krebs and Kornberg (1957), Wilhoit and Shiao (1964), Phillips et al (1965), Phillips (1966), Alberty (1969), Brown (1969), Cox and Pilcher (1970), Herskovits and Bowen (1974), Nabavian et al (1977), Sabbah et al (1977), Høiland and Holvik (1978), Kilday (1978a,b,c,d), Wilson et al (1979), Bardi et al (1980), Ramirez and Marecek (1980), Sabbah (1980), Stern and Oliver (1980), Teplitsky et al (1980), Ahmed et al (1981), Glukhova et al (1981), Kilday (1981), Jasra and Ahluwalia (1982), Teplitsky et al (1982), Kanbour et al (1983), Kirklin and Domalski (1983), DeVoe and Wasik (1984), Høiland et al (1984), Stern and Hubler (1984), Zielenkiewicz et al (1984), Apelblat (1986), Dawson et al (1986), Gajewski et al (1986), Colbert et al (1987), Buckin (1988), Tewari et al (1988), Buckin et al (1989), Goldberg and Tewari (1989), Kishore et al (1989), Kishore and Ahluwalia (1990a,b), Paljk et al (1990), Goldberg and Tewari (1991), Tewari et al (1991), Zolkiewski and Zielenkiewicz (1991), …”

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confidence: 96%