Journal of Organic Chemistry p. 4035 - 4037 (1986)
Update date:2022-08-10
Topics:
Chiang, Y.
Kresge, A. J.
Do, S. Van
Weeks, D. P.
An expression is derived which relates catalysis by undissociated H3PO4 in aqueous H2PO4-/HPO42- buffer solutions of pH ca. 7 to buffer ratio and the Broensted exponent α for the system.This expression predicts that H3PO4 catalysis will be significant when α is near unity but will have reached negligible proportions by the time α has dropped to 0.6-0.7.These predictions are borne out by experimental data for the hydrolysis of several 2- alkoxy-2-phenyl-1,3-dioxolanes.
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