Silica gel supported bis-cinchona alkaloid: A highly efficient chiral ligand for heterogeneous asymmetric dihydroxylation of olefins

Article abstract of DOI:10.1016/S0957-4166(97)00074-8

Comparable reactivity and enantioselectivity to those in homogeneous solution have been achieved in heterogeneous catalytic asymmetry dihydroxylation (AD) of elefins using a new silica gel supported cinchona alkaloid containing 1,4-bis(9-O-quinyl)phthalaz