(2,5-dimethoxyphenyl)diphenylphosphine oxide | 72666-56-9

• 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: (2,5-dimethoxyphenyl)diphenylphosphine oxide
• 英文别名: (2,5-Dimethoxyphenyl)(oxo)diphenyl-lambda~5~-phosphane；2-diphenylphosphoryl-1,4-dimethoxybenzene
• CAS: 72666-56-9
• 化学式: C₂₀H₁₉O₃P
• 分子量: 338.343
• InChiKey: FMALRWFJSNSCMR-UHFFFAOYSA-N

物化性质

• 熔点：
  142-143 °C
• 沸点：
  541.9±50.0 °C(Predicted)
• 密度：
  1.20±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2,5-dimethoxyphenyl)diphenylphosphine oxide 在 三氯化硼 作用下， 以88%的产率得到(2-羟基-5-甲氧基苯基)二苯基氧化膦
  参考文献：
  名称：

  Synthesis of ortho-phenyl substituted MeO-BIPHEP ligand and its application in Rh-catalyzed asymmetric hydrogenation

  摘要：

  A new BIPHEP-type ligand with phenyl groups at the 3,3'-positions, o-Ph-MeO-BIPHEP 3 was prepared. This ligand afforded excellent enantioselectivities when used in the Rh-catalyzed asymmetric hydrogenation of alpha-dehydroamino acid derivatives. The strong influence of o-phenyl groups of the ligand on the enantioselectivities of the reaction has been demonstrated by a comparison with its parent ligand MeO-BIPHEP. (C) 2004 Published by Elsevier Ltd.

  DOI：

  10.1016/j.tetasy.2004.05.043
• 作为产物：
  描述：

  4-methoxyphenyl diphenylphosphinate 在 potassium carbonate 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 30.0h， 生成 (2,5-dimethoxyphenyl)diphenylphosphine oxide
  参考文献：
  名称：

  Synthesis, resolution and applications of 3,3′-bis(RO)-MeO-BIPHEP derivatives

  摘要：

  A series of optically pure 3,3'-bis(RO)-MeO-BIPHEP derivatives are prepared and used in palladium catalyzed asymmetric transformations. The phosphine oxide of (+/-)-5 is prepared in four steps from p-methoxyphenol and resolved using the novel resolving reagent chloro((L)-menthoxy)dimethylsilane. Subsequent conversions provide catalysts 8 and 9. Ligands 6, 7 and 10 are prepared in six steps from p-methoxyphenol and the phosphine oxides of 6 and 7, and 10 are resolved using di-p-toluoyl- and dibenzoyl-(L)-tartaric acid, respectively. (R)-3,3'-Bispivalate 8 is superior to the other catalysts in asymmetric Heck reaction with 2,3-dihydrofuran while (R)-(+)-bis(tolyloxy) 10 and (+)-(R)-sugar derivative 9 are better in the Pd-catalyzed polyene cyclization; however, the absolute sense of chirality in the product from the polyene cyclization was reversed to that obtained when (R)-(+)BINAP and (R)-(+)-MeO-BIPHEP were used. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2004.03.073

文献信息

• Manganese(III)-mediated direct phosphonylation of arenes
  作者：Wei Xu、Jian-Ping Zou、Wei Zhang

  DOI：10.1016/j.tetlet.2010.03.029

  日期：2010.5

  Manganese (III)-promoted direct phosphonylation of mono- and disubstituted arenes with dialkylphosphite afforded regioselective dialkylphosphonates in good yields. The reactions can apply to arenes bearing electron-donating groups and electron-withdrawing groups such as ester and nitrile.

  锰（III）促进的单-和二取代的芳烃与亚磷酸二烷基酯的直接膦酰化反应可以很好地提供区域选择性的二烷基膦酸酯。该反应可适用于带有给电子基团和吸电子基团如酯和腈的芳烃。
• Efficient potassium hydroxide promoted P-arylation of aryl halides with diphenylphosphine
  作者：Yang Zhou、Changchun Liu、Zhihao Shen、Bencai Dai、Jin Chen

  DOI：10.1016/j.jorganchem.2021.121932

  日期：2021.9

  by KOH-promoted P-Arylation reaction of aryl halides with diphenylphosphine is presented. Notably, this transformation could smoothly proceed with high yields under transition-metal-free and mild reaction conditions. In addition, this protocol is valuable for industrial application due to the convenient operation and readily accessible aromatic halides. A possible explanation of the reaction mechanism

  介绍了一种通过KOH促进的芳基卤与二苯基膦的P-芳基化反应合成三芳基膦化合物的简单方法。值得注意的是，这种转化可以在无过渡金属和温和的反应条件下以高产率顺利进行。此外，由于该协议操作方便且易于获得芳族卤化物，因此该协议对工业应用很有价值。基于实验数据提出了对反应机理的可能解释。
• Ortho substituted chiral phosphines and phosphinites and their use in asymmetric catalytic reactions
  申请人：The Penn State Research Foundation

  公开号：US20020128501A1

  公开（公告）日：2002-09-12

  3,3′-Substituted chiral biaryl phosphine and phosphinite ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition, epoxidation, kinetic resolution and [m+n] cycloaddition. The metal complexes are particularly effective in Ru-catalyzed asymmetric hydrogenation of beta-ketoesters to beta-hydroxyesters and Ru-catalyzed asymmetric hydrogenation of enamides to beta amino acids.

  揭示了基于3,3'-取代手性联苯膦和膦酸酯配体以及基于这种手性配体的金属配合物，在不对称催化中有用。这些金属配合物在不对称反应中作为催化剂很有用，例如氢化、氢化物转移、烯丙基烷基化、氢硅烷基化、氢硼烷基化、氢乙烯基化、氢甲酰基化、烯烃交换反应、羰基化、异构化、环丙烷化、Diels-Alder反应、Heck反应、醛缩反应、Michael加成、环氧化、动力学分辨和[m+n]环加成。这些金属配合物在Ru催化的不对称氢化β-酮酸酯为β-羟基酯和Ru催化的不对称氢化烯酰胺为β-氨基酸中特别有效。
• Selective ortho lithiation of (2,5-dimethoxyphenyl)diphenylphosphine oxide and trapping of the resulting aryllithium with electrophiles
  作者：John M. Brown、Simon Woodward

  DOI：10.1021/jo00024a019

  日期：1991.11

  The title compound undergoes predominant 6-lithiation, ortho to the methoxy and phosphinoyl groups, on reaction with t-BuLi in THF under conditions of thermodynamic control at low temperature. The organolithium compound is stable at least to 0-degree-C and can be trapped by a range of electrophiles to give the corresponding tetrasubstituted (diphenylphosphinoyl)arenes in moderate to good yield. The iodide formed by this sequence undergoes Ullman coupling to the diphenyl, which exhibits a novel restricted rotation phenomenon, in good yield under mild conditions. (2,5-Dimethoxyphenyl)diphenylphosphine sulfide lithiates exclusively at the 4-position under the same conditions, whilst the corresponding phosphine is unreactive.
• Synthesis and easy racemisation of an atropisomerically chiral phosphinamine
  作者：Nathaniel W. Alcock、John M. Brown、Mark Pearson、Simon Woodward

  DOI：10.1016/s0957-4166(00)82305-8

  日期：1992.1

  Both the chelating P-N ligand 1-(2'diphenylphosphino-3',6'-dimenthoxyphenyl)-isoquinoline and its square planar Pd complex (15) atropisomerise readily at room temperature.