C. Bolm et T. Kuhn, Asymmetric epoxidation of allylic alcohols using vanadium complexes of (N)-hydroxy-[2.2]paracyclophane-4-carboxylic amides, SYNLETT, (6), 2000, pp. 899-901
Vanadium complexes of (N)-hydroxy-[2.2]paracyclophane-4-carboxylic amides 3
are catalysts for the asymmetric epoxidation of allylic alcohols with tert
-butyl hydroperoxide as terminal oxidant. Up to 71% ee have been obtained w
ith 39 bearing an adamantyl-substituent at the nitrogen of the hydroxamic l
igand.