Stereoselective cyclopalladation of [{(N-methyl-N-aryl)amino}methyl]ferrocenes: Crystal structure of σ-Pd[ClPPh3(η5-C5H5)Fe(η5-C5H3CH2N(CH3)C6H4OCH3-4)]·H2O
                                
                                    
                                        作者:Hong-Xing Wang、Ying-Jie Li、Ren-Qing Gao、Hong-Fei Wu、Feng-Ying Geng、Rong Jin                                    
                                    
                                        DOI:10.1016/j.inoche.2006.03.024
                                    
                                    
                                        日期:2006.6
                                    
                                    Stereoselective cyclopalladation of [(N-methyl-N-aryl)amino]methylferrocenes 1a-f (aryl = 4-CH3OC6H4(a), 4-CH3C6H4(b), C6H5(c), 4-ClC6H4(d), 3-ClC6H4(e), 3-O2NC6H4(f)) with sodium palladium tetrachloride and followed by treatment with triphenylphosphine resulted in the cyclopalladated complexes 3a-f (aryl = same as before) in the form of raceme. The structure of 3a was determined by X-ray single crystal diffraction. Complex 3a crystallizes in triclinic, space group P-1 with a = 10.6685(14), b = 10.7412(14), c = 16.795(2) angstrom, alpha = 71.879(2), beta = 85.798(2), gamma = 6.4.523(2)degrees. The possible mechanism for the formation of 3 was discussed. (C) 2006 Elsevier B.V. All rights reserved.