title: Stereogenic boron in 2-amino-1,1-diphenylethanol-based boronate-imine and amine complexes.
abstract: Racemic boronate-imine and boronate-amine complexes 8 and 10, both featuring a stereogenic boron atom were synthesized from 2-amino-1,1-diphenylethanol (5) and characterized by crystal structure analyses. Proof of enantiomerism at the boron center for the novel boronate-amine complex 10 was established by separation of the enantiomers. Racemization barriers were found to be in the same range for both amine and imine complexes (100-110 kJ/mol).
authors.affiliation: Institute of Organic and Macromolecular Chemistry, University of Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Schlecht
authors.forename: Walter
authors.initials: W
authors.lastname: Frank
authors.forename: Manfred
authors.initials: M
authors.lastname: Braun