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- W321043234 abstract "Summary of microscopic rate constants for the aminolysis of methylbenzene sulfinate in H 2 O at 25 o C Amine pKa k 1 /M -1 ․s -1 k -1 /s -1 k 2 /s -1 k -1 /k 2 piperidine 11.2 10.1 7.04 × 10 -2 3.51 × 10 -2 0.449ethylamine 10.6 2.28 1.50 × 10 -2 9.67 × 10 -3 1.55piperazine 9.82 0.791 1.63 × 10 -3 1.00 × 10 -3 1.62 that the reaction proceeds via a stepwise mechanism as shown in Scheme 1.The observed rate constant ( k obs ) for two steps involving the intermediate is derived eq.1 using the steady state approximation, where [Nu] represents the concentration of amine. k obs = k 1 k 2 [Nu]/{k 1 [Nu] + k -1 + k 2 }(1)If the reaction proceeds in a stepwise mechanism with inter-mediate, the plot of 1/ k obs vs 1/[Nu] of eq.2 which is rearranged from eq.1 should be linear. As one can see in Figure 2, the linear plot with intercept has been obtained. The value of intercept means the rate constant for the reaction of substrate with H 2 O or OH ‒ at zero concentration of amine.1/ k obs = 1/k" @default.
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- W321043234 date "2009-08-20" @default.
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- W321043234 title "Aminolysis of Methylbenzene Sulfinate: Definitive Evidence for a Stepwise Mechanism" @default.
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- W321043234 doi "https://doi.org/10.5012/bkcs.2009.30.8.1893" @default.
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