Mild intramolecular P–C(sp3) bond cleavage in bridging diphosphine complexes of RuII RhIII and IrIII
作者:Peter De'Ath、Mark R.J. Elsegood、Christopher A.G. Halliwell、Martin B. Smith
DOI:10.1016/j.jorganchem.2021.121704
日期:2021.4
PhL1, PhL2, and PhL4, and [RuCl(μ-Cl)(η6-Me2CHC6H4Me)]2 in CH2Cl2 affords the P/P-bridging dinuclear ruthenium(II) complexes RuCl2(η6-Me2CHC6H4Me)}2(μ-CyL1−PhL4) 1a−f as red/orange solids. Careful monitoring by 31P1H} NMR spectroscopy of CDCl3 solutions of 1a−e revealed remarkably clean P−Csp3 bond cleavage to give RuII mononuclear species 2a−e and the known secondary phosphine complexes RuCl2(η6-Me2CHC6H4Me)(PCy2H)
三种新的羧酸官能化的二膦R 2 PCH 2 N(Ar)CH 2 PR 2 [ Cy L 1 R = Cy,Ar =(1-CO 2 H)(3-OMe)C 6 H 3,Cy L 2 R = Cy,Ar =(1-CO 2 H)(3-OH)C 6 H 3,Ph L 3 R = Ph,Ar =(1-CO 2 H)(5-OMe)C 6 H 3 ]由R 2 PCH 2缩合制备OH和适当的芳族胺在MeOH中的溶液,并以良好收率分离为无色固体(对于Cy L 1,Cy L 2)。的反应赛扬大号1,赛扬大号2,或博士大号3,沿与先前报道的二膦博士大号1,博士大号2,和博士大号4,和将[RuCl(μ-Cl)的(η 6 -Me 2 CHC 6 H 4 Me)] 2 in CH 2 Cl 2,得到P / P-桥接的双核钌(II)络合物的RuCl 2(η 6 -Me 2 CHC 6 H ^ 4 Me)的} 2(μ-赛扬大号1