[PDF][PDF] Kinetics and reactivity of indole-2, 3–dione ring towards alkali in dimethyl sulphoxide-water mixtures
MF Fathalla, AM Ismail - 2006 - nopr.niscpr.res.in
Kinetics of alkaline hydrolysis of indole-2, 3-dione (isatin) and indole-2, 3-dione (N-melhyl
isatin) have been carried out at different percentages of DMSO-H 2 O mixtures and at
different temperatures in the range 30-45° C. The reaction proceeds according to pesudo
first-order kinetics. The presence of an electron releasing substituent melhyl group attached
to nitrogen atom accelerates the reaction rate. Thermodynamic activation parameters ΔH#,
ΔS# and ΔG# have been determined. The negative values of entropy of activation and the …
isatin) have been carried out at different percentages of DMSO-H 2 O mixtures and at
different temperatures in the range 30-45° C. The reaction proceeds according to pesudo
first-order kinetics. The presence of an electron releasing substituent melhyl group attached
to nitrogen atom accelerates the reaction rate. Thermodynamic activation parameters ΔH#,
ΔS# and ΔG# have been determined. The negative values of entropy of activation and the …
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