RuCl2(PPh3)3 with 2 eq. PP3. Through coordination of two potentially tetradentate ligands in a bidentate arrangement, four uncoordinated phosphine moieties remain readily available for subsequent reaction. This is demonstrated through their facile oxidation with hydrogen peroxide, providing trans-RuCl2(PP[PO]2)2 (1b) (PP[PO]2 = bis[2-(diphenylphosphine oxide)ethyl][2-(diphenylphosphino)ethyl]phosphine). Whilst
通过使RuCl 2(PPh 3)3与2eq。的反应制备反式-RuCl 2(PP 3)2(1a)(PP 3 =三[2-(
二苯基膦基)乙基]膦。PP 3。通过将两个潜在的四齿
配体配成双齿配位,四个未配位的膦部分仍然易于用于后续反应。通过使用
过氧化氢轻松氧化可证明这一点,从而提供反式RuCl 2(PP [ PO ] 2)2(1b)(PP [ PO] 2 =双[2-(
二苯基膦氧化物)乙基] [2-(
二苯基膦基)乙基]膦)。尽管1a的
氯化物提取反应看起来很慢(对于反式二
氯化物而言是典型的),但顺式RuCl 2(PP 3)在“ Dixneuf”条件下(CH 2 Cl 2,NaPF 6,NEt 3)与
乙炔基
二茂铁反应迅速,三(杂)
金属butenynyl配合物[(PP 3)的Ru(η 3 -FCC 3 CHFC)] PF 6(2,FC =
二茂铁)。1a-b的侧链组为未来的协调研究提供了巨大的潜力(例如,