Convenient method for the rapid generation of highly active and enantioselective yttrium catalysts for asymmetric hydroamination.

Convenient method for the rapid generation of highly active and enantioselective yttrium catalysts for asymmetric hydroamination.

Chemical communications (Cambridge, England) (2008-07-26)

Jérôme Hannedouche, Isabelle Aillaud, Jacqueline Collin, Emmanuelle Schulz, Alexander Trifonov

ABSTRACT

A facile method for the preparation of highly active and enantioselective yttrium precatalysts for asymmetric hydroamination of gem-disubstituted aminoalkenes, from the combination of YCl(3) or YCl(3)(THF)(3.5) with ligand (R)- and n-BuLi is described.

MATERIALI

N° Catalogo

Marchio

Descrizione del prodotto

451363

Sigma-Aldrich

Yttrium(III) chloride, anhydrous, powder, 99.99% trace metals basis

464317

Sigma-Aldrich

Yttrium(III) chloride hexahydrate, 99.99% trace metals basis

211648

Sigma-Aldrich

Yttrium(III) chloride hexahydrate, 99.9% trace metals basis

450103

Sigma-Aldrich

Yttrium(III) chloride, AnhydroBeads^™, −10 mesh, 99.99% trace metals basis

204919

Sigma-Aldrich

Yttrium(III) chloride hexahydrate, 99.999% trace metals basis