13932-55-3Relevant articles and documents
Alkaline hydrolysis of Y-substituted phenyl phenyl thionocarbonates: Effect of changing electrophilic center from C=O to C=S on reactivity and mechanism
Kim, Song-I,Park, Hey-Ran,Um, Ik-Hwan
scheme or table, p. 179 - 182 (2011/10/31)
Second-order rate constants (kOH-) have been measured spectrophotometrically for reactions of Y-substituted phenyl phenyl thionocarbonates (4a-i) with OH- in 80 mol % H2O/20 mol % DMSO at 25.0 ± 0.1 °C. The ksu
Carbon kinetic isotope effects on the hydrolysis of aryl carbonates
Marlier, John F.,O'Leary, Marion H.
, p. 5996 - 5998 (2007/10/02)
Carbon kinetic isotope effects on the hydrolysis of aryl carbonates in 1:1 (v/v) dioxane-water at 25 °C at various pHs were used to calculate isotope effects on the reactions with hydroxide ion and with water. For diphenyl carbonate kOH12/kOH13 = 1.0482 and kw12/kw13 = 1.0509. For bis(p-methoxyphenyl)carbonate kOH12/kOH13= 1.0493 and kw12/kw13 = 1.0518. For bis(p-nitrophenyl)carbonate kOH12/KOH13 = 1.0476. The small change in the isotope effect with substituent group for both alkaline and neutral hydrolysis is in contrast to the large substituent effect on the rate constants for both reactions. The nearly constant isotope effect indicates that transition-state structures arc similar for all substrates.