Recycling experiments for asymmetric di-hydroxylation of cyclohexene^a.

Cycles	1	2	3	4	5	6	7
Conv.%	96	95	96	94	95	93	93
Sel.%diols	92	92	90	91	90	89	89
e.e.%(trans/cis)	93	95	92	94	91	92	90
W (mmol g−1)	2.53	2.53	2.51	2.48	2.45	2.44	2.42

^aOnly a small amount of cyclohexanone was formed.