2-diphenylphosphanyl-N-[2-di(propan-2-yl)phosphanyl-4-methylphenyl]-4-methylaniline | 1333235-55-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-diphenylphosphanyl-N-[2-di(propan-2-yl)phosphanyl-4-methylphenyl]-4-methylaniline
• CAS: 1333235-55-4
• 化学式: C₃₂H₃₇NP₂
• 分子量: 497.6
• InChiKey: ATXVOOUETJFRTO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8
• 重原子数：
  35
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  12
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  dichloro( 1,5-cyclooctadiene)platinum(ll) 、 2-diphenylphosphanyl-N-[2-di(propan-2-yl)phosphanyl-4-methylphenyl]-4-methylaniline 在 2,6-二甲基吡啶 作用下， 以 甲苯 为溶剂， 反应 0.5h， 以71%的产率得到
  参考文献：
  名称：

  Comparison of the Electronic Properties of Diarylamido-Based PNZ Pincer Ligands: Redox Activity at the Ligand and Donor Ability Toward the Metal

  摘要：

  This paper presents the synthesis and characterization of a series of pincer ligands and their Ni, Pd, Pt, and Rh complexes. The ligands under examination are based on a diarylamine which is modified either by two phosphino (-PR2) substituents in the ortho-positions (PNP ligands) or by a cornbination of a phosphino and an iminyl (-CH=NX) substituent (PNN ligands). The ligands can be broken down into three groups: (a) C-2v-symmetric PNP ligands with identical side -PR2 donors, (b) C-2-Symmetric PNP' ligands with different-PR2 side donors, and (c) PNN ligands containing a -PPr2 side donor. All of the ligands under study readily formed square-planar complexes of the types (PNZ)PdCl, (pNZ)Pd(OAc), and (PNZ)RhCO, where PNZ is the corresponding anionic tridentate pincer ligand. For select PNP ligands, (PNP)NiCl and (PNP)PtCl were also studied. The (PNZ)MCl complexes (M = Ni, Pd, Pt) underwent quasireversible oxidation in cyclic voltammetry experiments, Based on the close similarity of formal potentials for Pd, and Pt analogs, and based on the previous literature evidence, these oxidation events are ascribed primarily to the PNZ ligand, and the E-1/2 values can be used to compare the ease of oxidation of different ligands. A (PNP)PdCl complex containing methoxy substituents para- to the central nitrogen underwent two quasireversible oxidations. Two mono-oxidized complexes were isolated and structurally characterized in comparison to their neutral analog, revealing minimal changes in the bond distances and angles. Several other neutral complexes were also structurally characterized. The carbonyl stretching frequency in (PN-Z)RhCO complexes was used to gauge the donating ability of the various pincer ligands toward the metal. Comparison of E-1/2 values for (PNZ)PdCl and v(CO) values for (PNZ)RhCO revealed that the two are not consistently correlated across all the studied ligands and can be tuned to different degrees through judicious ligand alteration.

  DOI：

  10.1021/ic503062w
• 作为产物：
  描述：

  bis(2-bromo-4-methylphenyl)amine 在 正丁基锂 作用下， 以 乙醚 为溶剂， 反应 14.5h， 生成 2-diphenylphosphanyl-N-[2-di(propan-2-yl)phosphanyl-4-methylphenyl]-4-methylaniline
  参考文献：
  名称：

  Comparison of the Electronic Properties of Diarylamido-Based PNZ Pincer Ligands: Redox Activity at the Ligand and Donor Ability Toward the Metal

  摘要：

  This paper presents the synthesis and characterization of a series of pincer ligands and their Ni, Pd, Pt, and Rh complexes. The ligands under examination are based on a diarylamine which is modified either by two phosphino (-PR2) substituents in the ortho-positions (PNP ligands) or by a cornbination of a phosphino and an iminyl (-CH=NX) substituent (PNN ligands). The ligands can be broken down into three groups: (a) C-2v-symmetric PNP ligands with identical side -PR2 donors, (b) C-2-Symmetric PNP' ligands with different-PR2 side donors, and (c) PNN ligands containing a -PPr2 side donor. All of the ligands under study readily formed square-planar complexes of the types (PNZ)PdCl, (pNZ)Pd(OAc), and (PNZ)RhCO, where PNZ is the corresponding anionic tridentate pincer ligand. For select PNP ligands, (PNP)NiCl and (PNP)PtCl were also studied. The (PNZ)MCl complexes (M = Ni, Pd, Pt) underwent quasireversible oxidation in cyclic voltammetry experiments, Based on the close similarity of formal potentials for Pd, and Pt analogs, and based on the previous literature evidence, these oxidation events are ascribed primarily to the PNZ ligand, and the E-1/2 values can be used to compare the ease of oxidation of different ligands. A (PNP)PdCl complex containing methoxy substituents para- to the central nitrogen underwent two quasireversible oxidations. Two mono-oxidized complexes were isolated and structurally characterized in comparison to their neutral analog, revealing minimal changes in the bond distances and angles. Several other neutral complexes were also structurally characterized. The carbonyl stretching frequency in (PN-Z)RhCO complexes was used to gauge the donating ability of the various pincer ligands toward the metal. Comparison of E-1/2 values for (PNZ)PdCl and v(CO) values for (PNZ)RhCO revealed that the two are not consistently correlated across all the studied ligands and can be tuned to different degrees through judicious ligand alteration.

  DOI：

  10.1021/ic503062w

文献信息

• Ligand survey results in identification of PNP pincer complexes of iridium as long-lived and chemoselective catalysts for dehydrogenative borylation of terminal alkynes
  作者：Chun-I Lee、Jessica C. DeMott、Christopher J. Pell、Alyson Christopher、Jia Zhou、Nattamai Bhuvanesh、Oleg V. Ozerov

  DOI：10.1039/c5sc02161h

  日期：——

  Following the report on the successful use of SiNN pincer complexes of iridium as catalysts for dehydrogenative borylation of terminal alkynes (DHBTA) to alkynylboronates, this work examined a wide variety of related pincer ligands in the supporting role in DHBTA. The ligand selection included both new and previously reported ligands and was developed to explore systematic changes to the SiNN framework

  继关于成功使用铱的 SiNN 钳形配合物作为末端炔烃 (DHBTA) 脱氢硼化为炔基硼酸盐的催化剂的报告之后，这项工作研究了各种相关钳形配体在 DHBTA 中的支持作用。配体选择包括新的和以前报道的配体，旨在探索 SiNN 框架（8-（2-二异丙基甲硅烷基苯基）氨基喹啉）的系统变化。令人惊讶的是，只有二芳基氨基/双（膦） PNP 系统显示出任何 DHBTA 反应性。筛选中使用的特定 PNP 配体（带有两个二异丙基膦基侧供体）显示 DHBTA 活性低于 SiNN。然而，利用 PNP 系统提供的配体优化机会，通过磷取代的变化导致发现了一种催化剂，其活性、寿命和范围远远超过了原始 SiNN 原型。在模型 PNP 系统中制备了几种 Ir 配合物，并作为催化循环中的潜在中间体进行了评估。其中，(PNP)Ir 二硼基络合物和硼基亚乙烯基络合物显示出催化能力较差，因此可能不是催化循环的一部分。
• Unsymmetrical RPNPR′ pincer ligands and their group 10 complexes
  作者：Raymond B. Lansing、Karen I. Goldberg、Richard A. Kemp

  DOI：10.1039/c1dt10265f

  日期：——

  Two new unsymmetrical RPNPR′-type pincer ligands based on a bis(tolyl)amine framework have been synthesized and characterized by a variety of techniques, including X-ray crystallography. These ligands have been coordinated to Ni, Pd, and Pt precursors to provide a number of well-characterized group 10 halides. Conversion of these metal halides to metal hydrides was accomplished using borohydride reagents, or by direct interaction of the ligand with the zerovalent metal precursor. The insertion of oxygen into these hydrides in an attempt to prepare metal hydroperoxides has been examined; however, we were unable to obtain stable and isolable hydroperoxide species.

  我们合成了两种基于双（甲苯基）胺框架的新型非对称 RPNPRâ² 型钳形配体，并通过 X 射线晶体学等多种技术对其进行了表征。这些配体与镍、钯和铂前体配位后，产生了许多特征良好的第 10 族卤化物。利用硼氢化试剂或配体与零价金属前体的直接作用，可以将这些金属卤化物转化为金属氢化物。为了制备金属氢过氧化物，我们研究了在这些氢化物中加入氧气的方法；但是，我们无法获得稳定且可分离的氢过氧化物。