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1-(2-diphenylphosphinoethyl)-3-(2,4,6-trimethylphenyl)imidazolium bromide | 346586-15-0

中文名称
——
中文别名
——
英文名称
1-(2-diphenylphosphinoethyl)-3-(2,4,6-trimethylphenyl)imidazolium bromide
英文别名
Diphenyl-[2-[3-(2,4,6-trimethylphenyl)imidazol-1-ium-1-yl]ethyl]phosphane;bromide
1-(2-diphenylphosphinoethyl)-3-(2,4,6-trimethylphenyl)imidazolium bromide化学式
CAS
346586-15-0
化学式
Br*C26H28N2P
mdl
——
分子量
479.399
InChiKey
RHONJOMFWFUXCG-UHFFFAOYSA-M
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.83
  • 重原子数:
    30
  • 可旋转键数:
    6
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.19
  • 拓扑面积:
    8.8
  • 氢给体数:
    0
  • 氢受体数:
    1

反应信息

  • 作为反应物:
    描述:
    参考文献:
    名称:
    用于Oppenauer型氧化和转移加氢反应的高效异常NHC钌催化剂
    摘要:
    钌配合物[Ru(OAc)(a-PC)2 ] Br(3)包含两个异常的NHC配体,是通过Ru(OAc)2(PPh 3)2(1)与1-(2-二苯基膦基乙基)反应制得的在NaOAc存在下,溴化-3-甲酰亚胺咪唑鎓溴化物。配合物3在低催化剂负载(S / C高于10000)和使用化学计量的丙酮的情况下,以无与伦比的反应速率达到高达550 000 h –1的TOF,可催化多种醇类的Oppenauer型氧化。配合物3在几种酮与2-丙醇的反向转移加氢中也具有很高的活性,显示TOF高达60万h –1。
    DOI:
    10.1021/acscatal.9b03677
  • 作为产物:
    描述:
    1-(2-hydroxyethyl)-3-(2,4,6-trimethylphenyl)imidazolium bromide 在 potassium tert-butylate三溴化磷 作用下, 以 二氯甲烷二甲基亚砜 为溶剂, 反应 16.0h, 生成 1-(2-diphenylphosphinoethyl)-3-(2,4,6-trimethylphenyl)imidazolium bromide
    参考文献:
    名称:
    Nickel(II) complexes with bifunctional phosphine–imidazolium ligands and their catalytic activity in the Kumada–Corriu coupling reaction
    摘要:
    Zwitterionic Ni(II) complexes of type NiX3(NCN+), (NCN+ = 1-(2-diphenylphosphinoethyl)-3-(2,4,6-trimethylphenyl)imidazolium and X = Cl, 6; Br, 7), have been prepared by addition of NCN+ bromide (1a) or tetrafluoroborate (1b) to NiX2L, and characterised by X-ray crystallography. They have been used as catalytic precursors in the Kumada-Corriu coupling reaction between phenylmagnesium chloride and 4-chloroanisole, yielding high catalytic activities. Stoechiometric deprotonation investigations did not provide clear evidence for the formation of coordinated carbene species. (c) 2005 Elsevier B.V. All rights reserved.
    DOI:
    10.1016/j.jorganchem.2005.09.010
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文献信息

  • Contribution of heterobifunctional ligands to transition metal-catalysed C--C coupling reactions
    作者:Agnes LABANDE、Eric DEYDIER、Eric MANOURY、Jean-Claude DARAN、Catherine AUDIN、Rinaldo POLI
    DOI:10.3906/kim-1507-73
    日期:——
    In this account the authors' latest results in C-C coupling catalysis are reviewed. First, an efficient catalytic system for the Kumada-Tamao-Corriu coupling reaction based on NHC-phosphine (NHC = N-heterocyclic carbene) nickel complexes is presented. Then the use of palladium complexes of chiral ferrocenyl NHC-phosphines in the asymmetric Suzuki-Miyaura coupling reaction is reported. High catalytic activities and moderate enantioselectivities (ee up to 46%) were obtained. Chiral ferrocenyl phosphine-ethers were also tested in the asymmetric Suzuki-Miyaura reaction yielding good activities and moderate enantioselectivities (ee up to 37%). Finally, the original synthesis of a ferrocenyl rhodium(III) complex and its successful use as catalyst for a C-C coupling reaction via C-H activation of 2-phenylpyridine is presented.
    在这篇报道中,作者回顾了他们在C-C偶联催化方面的最新成果。首先,介绍了一种基于NHC-膦(NHC = N-杂环卡宾)镍复合物的高效催化体系,用于Kumada-Tamao-Corriu偶联反应。然后,报告了手性二茂铁NHC-膦的钯复合物在不对称Suzuki-Miyaura偶联反应中的应用,获得了高催化活性和适中的对映选择性(对映体富集率高达46%)。手性二茂铁膦醚在不对称Suzuki-Miyaura反应中也进行了测试,表现出良好的催化活性和适中的对映选择性(对映体富集率高达37%)。最后,介绍了一种二茂铁铑(III)复合物的原创合成及其成功作为催化剂通过C-H活化2-苯基吡啶进行C-C偶联反应的应用。
  • Highly Efficient Heck Reactions of Aryl Bromides with <i>n</i>-Butyl Acrylate Mediated by a Palladium/Phosphine−Imidazolium Salt System
    作者:Chuluo Yang、Hon Man Lee、Steven P. Nolan
    DOI:10.1021/ol015827s
    日期:2001.5.1
    [reaction: see text] A new phosphine-imidazolium salt, L.HBr (1, L = (1-ethylenediphenylphosphino-3-(mesityl))imidazol-2-ylidene), has been prepared. A combination of 0.5 mol % of Pd(dba)(2) and 0.5 mol % of L.HBr in the presence of 2 equiv of Cs(2)CO(3) as base has proven to be highly efficient in the Heck coupling reactions of aryl bromides (from electron-deficient to electron-rich aryl bromides)
    [反应:见正文]制备了一种新的膦-咪唑鎓盐L.HBr(1,L =(1-乙烯二苯基膦基-3-(甲磺酰基))咪唑-2-亚甲基)。在2当量Cs(2)CO(3)作为碱的情况下,0.5 mol%的Pd(dba)(2)和0.5 mol%的L.HBr的组合已被证明在Heck偶联反应中非常有效丙烯酸正丁酯制备芳基溴化物(从缺电子到富电子的芳基溴化物)。
  • Hydroboration of carbon dioxide enabled by molecular zinc dihydrides
    作者:Xiaoming Wang、Kejian Chang、Xin Xu
    DOI:10.1039/d0dt01090a
    日期:——
    Neutral molecular zinc(II) dihydrides supported by N-heterocyclic carbene ligands bearing a pendant phosphine group were synthesized and then reacted with carbon dioxide to afford zinc diformates. The zinc dihydrides were found to be active catalysts for hydroboration of carbon dioxide under mild conditions, selectively giving boryl formate, bis(boryl)acetal, or methoxy borane compounds by changing
    合成了带有侧链膦基的N-杂环卡宾配体负载的中性分子锌(II)氢化物,然后与二氧化碳反应生成二甲氧基锌。发现二氢化锌是在温和条件下二氧化碳加氢硼化的活性催化剂,通过改变硼烷还原剂的性质选择性地生成甲酸硼酯,双(硼基)乙缩醛或甲氧基硼烷化合物。
  • (Diphenylphosphino)alkyl-Functionalized Nucleophilic Carbene Complexes of Palladium
    作者:Nikolaos Tsoureas、Andreas A. Danopoulos、Arran A. D. Tulloch、Mark E. Light
    DOI:10.1021/om034061s
    日期:2003.11.1
    H(Et2O)B[3,5-(CF3)2C6H2]4} and pyridine or with (CF3)2CHOH and pyridine in CH2Cl2 gave the monocationic complexes [(La)Pd(CH3)(pyridine)]+(A)- (A- = B[(3,5-CF3)2C6H2)]4}-, (CF3)2CHO-); acetonitrile and benzonitrile analogues can be prepared in an analogous way. Reaction of 4a with AgBF4 in MeCN gave the dicationic complexes [(La)Pd(MeCN)2](BF4)2. Complexes 3 show moderate catalytic activity for the
    钯LPdX 2(L =(3-R 1)[1-Ph 2 P(CH 2)2 ]-咪唑-2-亚苄基的(二苯基膦基)烷基官能化的亲核杂环卡宾(NHC)络合物; R 1 = 2 ,6-PR我2 ç 6 ħ 3,2,4,6--ME 3 c ^ 6 ħ 2 ; X = CH 3(图3a,b)中,X = Br的(图4a,b))已通过的反应合成原位生成的功能化NHC配体L a或L b分别具有Pd(tmed)(CH 3)2和Pd(COD)Br 2,并在结构上进行了表征。的相互作用图3a用H(ET 2 O)B [3,5-(CF 3)2 C ^ 6 ħ 2 ] 4 }和吡啶或(CF 3)2 CHOH和CH中吡啶2氯2,得到单阳离子络合物[(L一)的Pd(CH 3)(吡啶)] +(A)-(A - = B [(3,5- CF 3)2 C ^ 6 ħ2)] 4 } - ,(CF 3)2 CHO -); 乙腈和苄腈类似物可以类似的方式制备。4a与AgCN
  • Chelation-Assisted Reactions of Phosphine- and Olefin-Tethered Imidazolium Derivatives and Their Affiliated N-Heterocyclic Carbenes with Roper’s Complex Ru(CO)<sub>2</sub>(PPh<sub>3</sub>)<sub>3</sub>
    作者:Laure Benhamou、Joffrey Wolf、Vincent César、Agnès Labande、Rinaldo Poli、Noël Lugan、Guy Lavigne
    DOI:10.1021/om900813p
    日期:2009.12.28
    first analogue of Roper’s complex incorporating an NHC moiety. The olefin-functionalized imidazolium ligand 3-(but-3-enyl)-1-mesitylimidazolium bromide, [HL2a]+Br−, reacts with 1 via chelation-assisted C−H activation and H transfer to the olefin, giving RuAr(N2C3H2)CH2C(H)(CH2CH3)}(CO)2(PPh3)Br (4a). Deprotonation of [HL2a]+Br− gives L2a, which reacts with 1 to give RuL2a}(CO)2(PPh3) (5a). Its protonation
    复杂的Ru(CO)2(PPH 3)3,1,为钌(0)的N-杂环卡宾配合物的产生的合适的起始化合物。尽管单齿NHC对1完全不反应,但是膦或烯烃官能化的N-杂环卡宾以及它们的咪唑鎓前体在螯合辅助下与1反应,其中膦或烯烃充当引导基团。的反应1-均三甲苯基-3-(2- diphenylphosphinoeth -1-基)咪唑鎓溴化物,[ HL 1A ] +溴-,1-均三甲苯基-3-(2- diphenylphosphinoeth -1-基)咪唑鎓四氟硼酸盐,[ HL 1A ]+ BF 4 - ,和1-(2,6-二异丙基苯基)-3-(2- diphenylphosphinoeth -1-基)咪唑鎓溴化物,[ HL 1B ] +溴- ,具有1给予配制成阳离子氢基物种[期RuH 大号* 1A,b }(CO)2(PPH 3)] + X -,[ 2a中,b ] + X - (一中,Ar =基; b,Ar
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