A continuously run Sharpless dihydroxylation in a membrane reactor gives in
formation on osmate leaching in high molecular weight, homogeneous AD catal
ysts, allowing conclusions on the leaching of heterogeneous Sharpless catal
ysts to be drawn. To date, there have been contradictory descriptions of th
is problem in the literature. (C) 2001 Elsevier Science Ltd. All rights res
erved.