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Novel bis(1,3,2-diazaphospholidine) ligands for asymmetric catalysis

AutorArribas, Inmaculada ; Álvarez, Eleuterio ; Pizzano, Antonio
Fecha de publicación2013
EditorAmerican Chemical Society
CitaciónOrganometallics 32: 2497- 2500 (2013)
ResumenA family of modularly designed chiral bis(1,3,2-diazaphospholidines) with N-aryl substituents (NP-PN) is reported. These compounds have been prepared in two steps from readily available (R,R)-1,2-diaminocyclohexane and tetrachlorodiphosphines. Examples in the set differ in the backbone and the aryl substituents, aiming at their application in asymmetric catalysis. Thus, [Rh(NBD)(NP-PN)]BF4 complexes lead to active catalysts in the hydrogenation of methyl α-acetamidoacrylate, which provide enantioselectivities up to 96% ee. In addition, NP-PN ligands also generate active catalysts in the hydroformylation of vinyl acetate, leading to high regioselectivities (iso:n ratio higher than 99:1) and enantioselectivities up to 65% ee. © 2013 American Chemical Society.
URIhttp://hdl.handle.net/10261/97631
DOI10.1021/om400185q
Identificadoresdoi: 10.1021/om400185q
issn: 0276-7333
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