Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (12): 1883.
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YANG Guang-Fu, LIU Hua-Yin, YANG Hua-Zheng
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Abstract: The acidity constants of herbicidal sulfonylureas and sulfonamides have been potentiometrically determined at 25 ℃ in DMSO/H2O mixed solvent. The linear relationships between the experimental pKavalues and the energy level of frontier orbital and substituent parameters have been found, which suggested that pKavalues obtained from this mixed solvent were suitable for the structure activity relationships analyses.
Key words: Potentiometer titration, Acidity dissociation constants, Sulfonylureas, Triazolo-pyrimidinyl sulfonamides, Regression analyses
CLC Number:
O624
TrendMD:
YANG Guang-Fu, LIU Hua-Yin, YANG Hua-Zheng . Acidity Constants of Herbicidal Sulfonylureas and Sulfonamides from Potentiometric Determinations in Aqueous Dimethyl Sulfoxide[J]. Chem. J. Chinese Universities, 1999, 20(12): 1883.
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http://www.cjcu.jlu.edu.cn/EN/Y1999/V20/I12/1883
