Pyridine− and Imidazole−Phosphinimine Bidentate Ligand Complexes: Considerations for Ethylene Oligomerization Catalysts
作者:Liam P. Spencer、Ramadan Altwer、Pingrong Wei、Lucio Gelmini、James Gauld、Douglas W. Stephan
DOI:10.1021/om030311t
日期:2003.9.1
diamagnetic compound (L)PdCl2 (20; L = 9), while the remaining ligands were used to prepare (L)NiBr2 and (L)FeCl2 complexes 21−30 and 31−40 (L = 10-19), respectively. In these complexes the P atoms become part of the chelate backbone. In addition, the pyridine−phosphinimines 2-(Ph3PNCH2)(C5H4N) (44), 2-(Ph3PNCH2)-6-Me(C5H3N) (45), and 2-(Ph3PNCH2)-6-Ph(C5H3N) (46) were also prepared from the reaction of 2
该系列的2-取代的二苯基膦吡啶1 - 5的合成和随后用甲硅烷基或芳基叠氮化氧化,得到一系列吡啶膦配体的2-(ME 3 SiNPPh 2)C 5 H ^ 4 N(9),2-( 2,6-Me 2 C 6 H 3 NPPh 2)C 5 H 4 N(10),2-(2,6- i- Pr 2 C 6 H 3 NPPh 2)C 5 H 4 N(11),2-(2,6--ME 2 ç 6 ħ 3 NPPh 2)-6-MEC 5 ħ 4 N(12),2-(2,6-异镨2 ç 6 ħ 3 NPPh 2)-6 -MeC 5 H 4 N(13),2-(2,6-Me 2 C 6 H 3 NPPh 2)-6-BnC 5 H 4 N(14),2-(2,6- i- Pr 2 C 6 H 3 NPPh 2)-6-BnC5 H 4 N(15),2-(2,6-Me 2 C 6 H 3 NPPh 2)-6-SiMe 3 C 5 H