Table 2. APH Reductions of Ketones^a.

substrate	catalyst	t/h	conv %	ee %
13	4	16	100	94 (R)
13	9	16	100	84 (R)
14	4	16	70	84 (R)
17	4	24	100	91 (S)
17	9	24	94	88 (S)
22	4	24	98	>99 (R)
22	9	24	100	99 (R)
23	4	48	100	99 (R)
23	9	48	60	99 (R)
26	4	48	99	37 (S)
26	9	48	40	81 (S)
27	4	48	95	98 (R)
27	9	48	72	95 (R)
28	4	16	100	94 (R)
28	9	16	100	80 (R)
29	4	16	98	92 (R)
29	9	16	99	74 (R)
30	4	24	100	82 (R)
31	4	48	32	80 (R)
32	4	24	100	95 (S)

^aConv % and ee % calculated as for Table 1.