R. Zhang et al., Enantioselective epoxidation of trans-disubstituted alkenes by D-2-symmetric chiral dioxoruthenium(VI) porphyrins, CHEM COMMUN, (5), 1999, pp. 409-410
A series of D-2-symmetric chiral trans-dioxoruthenium(VI) porphyrins can ef
fect enantioselective epoxidation of trans-beta-methylstyrene in up to 70%
ee, and 76% ee is attained for the oxidation of cinnamyl chloride; the faci
al selection for the trans-alkenes epoxidation is explained by a 'head-on a
pproach' model.