Dihydroxylation of a variety of commercially available polyenes has been investigated using phenylboronic acid, N-methylmorpholine N-oxide (NMO), and osmium tetroxide in anhydrous solvent. The diastereoselectivity of multiple oxidation steps is in some cases affected by the in situ protection of the intermediate ene-diols as phenyboronic esters, affording polyols not available from the standard Upjohn dihydroxylation procedure. A ...
![(3aR,5aR,8aS,10aS)-2,7-diphenyloctahydrocycloocta[1,2-d:5,6-d']bis([1,3,2]dioxaborole) Structure](https://image.chemsrc.com/caspic/480/122407-17-4.png)
