Versleijen, Jos P. G.;Van Leusen, Albert M.;Feringa, Ben L. published 《Copper(I) phosphoramidite catalyzed asymmetric conjugate addition of dialkylzinc reagents to α,β-unsaturated nitroacetates; an enantioselective route to β-aryl-nitroalkanes》. The research results were published in《Tetrahedron Letters》 in 1999.Computed Properties of C38H34NO2P The article conveys some information:
The asym. copper(I) phosphoramidite catalyzed conjugate addition of dialkylzinc reagents to E,Z-mixtures of α,β-unsaturated nitroacetates provided the 1,4-adducts in excellent yields but with low e.e.’s. High enantioselectivities (e.e.’s up to 92%) were obtained with structurally rigid 3-nitrocoumarins, leading to a new route to optically active β-aryl-nitroalkanes. And (11bS)-2,6-Dimethyl-N,N-bis(1-phenylethyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine (cas: 201732-49-2) was used in the research process.
(11bS)-2,6-Dimethyl-N,N-bis(1-phenylethyl)dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine(cas: 201732-49-2) is a compound of chiral-phosphine-ligands. At present, the synthesis of new chiral phosphines designed specifically for nucleophilic organocatalysis remains a significant challenge.Computed Properties of C38H34NO2P
Reference:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis