The synthesis of substituted bis[(diarylphosphinomethyl)cyclopentadienyl]zirconocene dichloride complexes for the preparation of heterodimetallic complexes containing early/late transition metal combinations
作者:Boris Bosch、Gerhard Erker、Roland Fröhlich
DOI:10.1016/s0020-1693(97)06002-7
日期:1998.4
Abstract Fulvenes ( 1a–e ) derived from condensation of cyclopentadiene with acetone or a variety of aldehydes were treated with LiPAr 2 (Ar = phenyl, p -tolyl) to yield the respective substituted (diarylphosphinomethyl)cyclopentadienides ( 2, 3 ). Subsequent reaction with ZrCl 4 (THF) 2 gave the respective bis[(diarylphosphinomethy])cyclopentadienyl]zirconium dichlorides ( Ar = phenyl ( 4 ), p -tolyl
摘要用LiPAr 2(Ar =苯基,对甲苯基)处理了由环戊二烯与丙酮或多种醛缩合而得的丁二烯(1a–e),得到了各自取代的(二芳基膦基甲基)环戊二烯(2,3)。随后与ZrCl 4(THF)2反应,得到相应的双[(二芳基膦基甲基)]环戊二烯基]二氯化锆(Ar =苯基(4),对甲苯基(5))。通过X射线衍射表征了复合的rac-[C 5 H 4 -CH(CH 3)-PPh 2] 2 ZrCl 2(rac-4b)。配合物4a和5a [(Cp-CMe 2 -PAr 2)2 ZrCl 2]与PdCl 2(NCPh)2或PtCl 2(NCPh)2的反应导致反式-(茂金属-螯合-膦基)的形成。金属配合物6–9(例如反式-Cl 2 Pd(Ph 2 P-CMe 2 -Cp)2 ZrCl 2]。从[Cp-CH(CMe 3)PPh 2] 2 ZrCl 2与PdCl 2(NCPh)2的反应产物中提取氯离子,最终得到