C3-Symmetric tris(binaphthyl) phosphite ligands: Correlation of structural properties with performance in enantioselective palladium and gold catalysis
作者:Fanji Kong、Aaron A. Ruch、Matthew C. Ellison、Vladimir N. Nesterov、LeGrande M. Slaughter
DOI:10.1016/j.poly.2024.116903
日期:2024.5
palladium-catalyzed asymmetric Suzuki-Miyaura coupling reactions and gold-catalyzed asymmetric intramolecular hydroamination of allenes. The nature of the 2ʹ-substituent had a strong effect on yields and enantioselectivities in both reactions, with phosphites bearing CF-substituted aryl groups performing best and giving up to 52–53% ee. Crystalstructures of two phosphites and three gold(I) phosphite complexes
Access to 2′-Substituted Binaphthyl Monoalcohols via Complementary Nickel-Catalyzed Kumada Coupling Reactions under Mild Conditions: Key Role of a P,O Ligand
作者:Sachin Handa、Yohan L. N. Mathota Arachchige、LeGrande M. Slaughter
DOI:10.1021/jo400349r
日期:2013.6.7
combination with an improved preparation of the monotriflate, is effective for 1,1′-binaphthalene-2-ols containing unsubstituted or electron-poor aryl or benzyl 2′-substituents. An alternative procedure, using a potentially hemilabile-bidentate phosphinan-4-ol ligand, is superior for products containing neopentyl or electron-rich aryl 2′-substituents. The obtained binaphthyl alcohols represent potentially