title: Synthesis and application of chiral beta-amino disulfides as ligands for the enantioselective addition of diethylzinc to aldehydes.
abstract: A new class of chiral beta-amino disulfides was synthesized from readily available and inexpensive starting materials by a straightforward method and their abilities as ligands were examined in the enantioselective addition of diethylzinc to aldehydes. Enantiomeric excesses of up to 99% have been obtained using 0.5 mol % of the chiral catalysts.
authors.affiliation: Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil. albraga@quimica.ufsm.br
authors.forename: Antonio L
authors.initials: AL
authors.lastname: Braga
authors.forename: Fábio Z
authors.initials: FZ
authors.lastname: Galetto
authors.forename: Oscar E D
authors.initials: OE
authors.lastname: Rodrigues
authors.forename: Claudio C
authors.initials: CC
authors.lastname: Silveira
authors.forename: Marcio W
authors.initials: MW
authors.lastname: Paixão