Table 2.

Observed kinetic data for the aqueous aminolysis and hydrolysis of p-nitrophenyl ester 7 (R = pNP)^a and m-nitrophenyl ester 7 (R = mNP)^b in the presence of 0.05 M D-glucosamine at 25 °C (n.d. = not determined).

pH	kaminol (min−1)a	kaminol (min−1)b
10.17	2.14	n.d.
9.81	2.19	n.d.
9.44	0.89	0.57
9.06	0.49	0.27
8.44	0.37	0.17
8.00	0.20	0.16
7.50	0.13	9.8 × 10−2
7.10	7.7 × 10−2	7.1 × 10−2
6.60	2.2 × 10−2	1.8 × 10−2
6.20	8.1 × 10−3	n.d.
5.88	3.7 × 10−3	n.d.
5.20	2.3 × 10−3	n.d.
4.88	2.1 × 10−3	n.d.