[(Ph2P(o-C6H4)CH2NCMe2CMe2NHCH2(o-C6H4)PPh2)RuH] | 823788-60-9

• 英文名称: [(Ph2P(o-C6H4)CH2NCMe2CMe2NHCH2(o-C6H4)PPh2)RuH]
• CAS: 823788-60-9
• 化学式: C₄₄H₄₆N₂P₂Ru
• 分子量: 765.88
• InChiKey: SGBGYVMPKKEYKE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  [(Ph2P(o-C6H4)CH2NCMe2CMe2NHCH2(o-C6H4)PPh2)RuH] 、 氢气 以 氘代苯 为溶剂， 生成 trans-RuH2(1,6-bis((2-diphenylphosphino)benzo)-3,3,4,4-tetramethyl-2,5-diaza-1,5-hexane)
  参考文献：
  名称：

  Dihydridoamine and Hydridoamido Complexes of Ruthenium(II) with a Tetradentate P−N−N−P Donor Ligand

  摘要：

  The new diphosphinediimine ligand PPh2C6H4CH=NCMe2CMe2N=CHC6H4PPh2 {tmeP(2)N(2)} is prepared by reacting NH2CMe2CMe2NH2 with 2 equiv of PPh2(C6H4-2-CHO). The diamine derivative PPh(2)C(6)H(4)CH(2)NHCMe(2)cMe(2)NHCH(2)C(6)HIPPh(2) {tmeP(2)(NH)(2)} is prepared by reducing tmeP(2)N(2) with LiAlH4. The reaction of RuHCl(PPh3)(3) with tmeP(2)N(2) in THF produces the complex trans-RuHCl{tmeP(2)N(2)}, while a similar reaction of RuHCl(PPh3)(3) with tmeP(2)(NH)(2) gives the complex trans-RuHCl{tmeP(2)(NH)(2)}, as a mixture of two isomers. The isomer with two N-H bonds syn to the Ru-H bond is converted on heating to an isomer thought to have one N-H syn to the Ru-H. The reaction of the two isomers with (KOBu)-Bu-t under Ar in toluene produces the novel hydridoamido complex RuH{tmeP(2)NNH}, where the ligand is deprotonated at one nitrogen. Reaction of this amido complex with H-2 gives exclusively the dihydridoamine complex transRu(H)(2){tmeP(2)(NH)(2)}. The complexes have been characterized by X-ray crystallography, NMR, IR, elemental analysis, and a deuterium exchange study. Complex RuH{tmeP(2)NNH}, or a combination of RuHCl{tmeP(2)(NH)(2)} and (KOBu)-Bu-t, slowly catalyzes the hydrogenation of acetophenone (6 atm H-2, 20 degreesC, benzene or 2-propanol). The catalytic cycle is thought to be similar to that for the ketone hydrogenation precatalyst trans-RuHCl{(S,S)-cyP(2)(NH)(2))}. However in the present work both of the proposed catalysts transRuH(2){tmeP(2)(NH)(2)} and RuH{tmeP(2)NNH} have been completely characterized. The tmeP2(NH)2 system, with hindering methyl groups, is less active than the cyP(2)(NH)(2) system with a trans-1,2-substituted cyclohexyl backbone. The variable configuration of the amine nitrogens that is observed for the tmeP(2)(NH)(2) complexes might also occur in the cyP(2)(NH)(2) systems and could explain the inconsistent selectivity of such catalysts. The diimine complex RuHCl{tmeP(2)N(2)} reacts with (KOBu)-Bu-t under H-2 to produce the dihydridodiamine complex trans-Ru(H)(2){tmeP(2)(NH)(2)}, the catalyst for the hydrogenation of acetophenone.

  DOI：

  10.1021/om049565k
• 作为产物：
  描述：

  trans-[((Ph2P(o-C6H4)CH2NHCMe2)2)RuHCl] 在 KO(t)Bu 作用下， 以 甲苯 为溶剂， 以79%的产率得到[(Ph2P(o-C6H4)CH2NCMe2CMe2NHCH2(o-C6H4)PPh2)RuH]
  参考文献：
  名称：

  Dihydridoamine and Hydridoamido Complexes of Ruthenium(II) with a Tetradentate P−N−N−P Donor Ligand

  摘要：

  The new diphosphinediimine ligand PPh2C6H4CH=NCMe2CMe2N=CHC6H4PPh2 {tmeP(2)N(2)} is prepared by reacting NH2CMe2CMe2NH2 with 2 equiv of PPh2(C6H4-2-CHO). The diamine derivative PPh(2)C(6)H(4)CH(2)NHCMe(2)cMe(2)NHCH(2)C(6)HIPPh(2) {tmeP(2)(NH)(2)} is prepared by reducing tmeP(2)N(2) with LiAlH4. The reaction of RuHCl(PPh3)(3) with tmeP(2)N(2) in THF produces the complex trans-RuHCl{tmeP(2)N(2)}, while a similar reaction of RuHCl(PPh3)(3) with tmeP(2)(NH)(2) gives the complex trans-RuHCl{tmeP(2)(NH)(2)}, as a mixture of two isomers. The isomer with two N-H bonds syn to the Ru-H bond is converted on heating to an isomer thought to have one N-H syn to the Ru-H. The reaction of the two isomers with (KOBu)-Bu-t under Ar in toluene produces the novel hydridoamido complex RuH{tmeP(2)NNH}, where the ligand is deprotonated at one nitrogen. Reaction of this amido complex with H-2 gives exclusively the dihydridoamine complex transRu(H)(2){tmeP(2)(NH)(2)}. The complexes have been characterized by X-ray crystallography, NMR, IR, elemental analysis, and a deuterium exchange study. Complex RuH{tmeP(2)NNH}, or a combination of RuHCl{tmeP(2)(NH)(2)} and (KOBu)-Bu-t, slowly catalyzes the hydrogenation of acetophenone (6 atm H-2, 20 degreesC, benzene or 2-propanol). The catalytic cycle is thought to be similar to that for the ketone hydrogenation precatalyst trans-RuHCl{(S,S)-cyP(2)(NH)(2))}. However in the present work both of the proposed catalysts transRuH(2){tmeP(2)(NH)(2)} and RuH{tmeP(2)NNH} have been completely characterized. The tmeP2(NH)2 system, with hindering methyl groups, is less active than the cyP(2)(NH)(2) system with a trans-1,2-substituted cyclohexyl backbone. The variable configuration of the amine nitrogens that is observed for the tmeP(2)(NH)(2) complexes might also occur in the cyP(2)(NH)(2) systems and could explain the inconsistent selectivity of such catalysts. The diimine complex RuHCl{tmeP(2)N(2)} reacts with (KOBu)-Bu-t under H-2 to produce the dihydridodiamine complex trans-Ru(H)(2){tmeP(2)(NH)(2)}, the catalyst for the hydrogenation of acetophenone.

  DOI：

  10.1021/om049565k

文献信息

• Hydrogenation of Benzonitrile to Benzylamine Catalyzed by Ruthenium Hydride Complexes with P−NH−NH−P Tetradentate Ligands:  Evidence for a Hydridic−Protonic Outer Sphere Mechanism
  作者：Tianshu Li、Ines Bergner、F. Nipa Haque、Marco Zimmer-De Iuliis、Datong Song、Robert H. Morris

  DOI：10.1021/om700783e

  日期：2007.11.1

  theoretical (DFT) evidence is presented for a new mechanism for nitrile hydrogenation:  the successive hydrogenation of the CN triple bond and then the CN double bond of the intermediate imine by H+/H- transfer from a trans dihydride active catalyst. The amido complex RuHtmeP2N(NH)} (4) has similar activity to 3/base for the base-free hydrogenation of benzonitrile and is moderately active for the catalytic

  RuHCl（PPh 3）3与四齿配体[PPh 2（（邻-C 6 H 4）CH 2 NHCH 2-）] 2 ethP 2（NH） 2 }在四氢呋喃中生成新的复合反式RuHCl ethP 2（NH） 2 }（ 1），为两种异构体的混合物。当用KO t Bu / KH活化时，RuHCl ethP 2（NH） 2 }（ 1）络合物是一种非常活泼的催化剂，用于将甲苯中的苯甲腈氢化为苄胺，比已知的催化剂Ru（H 2） 2 H具有更高的活性2（PCy 3） 2（ 2）。1和2的混合物并且碱还导致苄腈有效地转化为苄胺。络合物RuHCl tmeP 2（NH）2 }（3），其中tmeP 2（NH）2为[PPh 2（（邻位-C 6 H 4）CH 2 NHCMe 2-）] 2是用于该反应的活性较低的催化剂。这些催化剂体系对空气敏感，对湿气极为敏感。实验和理论（DFT）的证据提出了一种用于对腈加氢的新机制：