Mt. Reetz et al., BINOL-based diphosphonites as ligands in the asymmetric Rh-catalyzed conjugate addition of arylboronic acids, ORG LETT, 3(25), 2001, pp. 4083-4085
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BINOL-based diphosphonites having achiral backbones are useful ligands in t
he Rh-catalyzed conjugate addition of arylboronic acids to alpha,beta -unsa
turated carbonyl compounds. The nature of the achiral backbone determines t
he direction and degree of enantioselectivity, with er values of up to 99.5
:0.5 possible.