Synthesis and resolution of benzylisopropylphenylphosphine, a monodentate P-chiral ligand
                                
                                    
                                        作者:Joan Albert、Ramón Bosque、J.Magali Cadena、Jaume R Granell*、Guillermo Muller、Juan Ignacio Ordinas                                    
                                    
                                        DOI:10.1016/s0957-4166(00)00300-1
                                    
                                    
                                        日期:2000.8
                                    
                                    The synthesis of benzylisopropylphenylphosphine by reaction between the benzylphenylphosphide anion and isopropyl chloride and its subsequent resolution by means of an optically active palladium metallacycle is reported. The synthesis of the organometallic complex [Pd(eta(3)-2-MeC3H4)Cl((PBnPrPh)-Pr-i)] is also described, as well as the assignment of the absolute configuration of the coordinated phosphine by mono- and bidimensional proton NMR spectra, using the homochiral palladacycle as a reference point. In order to estimate the height of the energy barrier corresponding to the rotation of the phosphine ligand around the Pd-P bond, several calculations were performed at the semiempirical PM3(tm) level. (C) 2000 Elsevier Science Ltd. All rights reserved.