Xian Jia

Highly enantioselective hydrogenation of enamides catalyzed by rhodium–monodentate phosphoramidite complex

The monodentate phosphoramidite ligand monophos was used in the Rh-catalyzed asymmetric hydrogenation of enamides to give high enantioselectivities (up to 96% ee).

Bipyridyl-based diphosphine as an efficient ligand in the rhodium-catalyzed asymmetric conjugate addition of arylboronic acids to α,β-unsaturated ketones

Abstract Reactions of α,β-unsaturated ketones with excess arylboronic acids in the presence of a rhodium catalyst generated in situ from Rh(acac)(C 2 H 4 ) and ( S )-P-Phos in dioxane/water at 100°C gave high yields of the corresponding products in up to 99% ee.

Copper-catalyzed enantioselective conjugate addition of triethylaluminum to 2-cyclopentenone

Abstract Bidentate phosphites were prepared starting from BINOL, H 8 -BINOL or 3,3′, 5,5′-tetra- tert- butyl-2,2′-biphenol. Utilization of these ligands in the copper-catalyzed enantioselective conjugate addition of triethylaluminum to 2-cyclopentenone afforded 3-ethylcyclopentanone in up to 94.0% ee.

Formation of a palladium(II) complex of 2-(2-pyridinylmethyleneamino)-2′-hydroxy-1,1′-binaphthyl with novel Cσ-coordination and its theoretical investigation

Complexation of the NOBIN-derived Schiff base ligand 1 with Pd(CH3CN)2Cl2 has been observed to result in a novel Pd–C bonding mode and theoretical calculations based on B3LYP density functional theory have been carried out to clarify the reaction mechanism.

(R)‐2,2′‐Di­methoxy‐3,3′‐bis{[(1S)‐1‐phenyl­ethyl]­imino­methyl}‐1,1′‐bi­naphthalene, a new chiral Schiff base

The synthesis and crystal structure of the title new chiral Schiff base, C40H36N2O2, derived from BINOL (1′1-bi-2-naphthol), are presented.

(1R,2S)-1-(6-Methoxy-2-naphthyl)-3-methyl-2-(p-methyl­phenyl­sulfonyl­amino)-­butan-1-ol

The title compound, C23H27NO4S, is U-shaped, with the phenyl and naphthalene rings almost parallel, having a dihedral angle of 15.34 (13)°. In the crystal structure, a hydrogen-bonded chain-like structure is observed, extending in the a direction.