(E)-diethyl 2-(3-methylphenyl)prop-1-enylphosphonate | 1182848-31-2

• 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: (E)-diethyl 2-(3-methylphenyl)prop-1-enylphosphonate
• 英文别名: (E)-diethyl (2-(m-tolyl)prop-1-en-1-yl)phosphonate；1-[(E)-1-diethoxyphosphorylprop-1-en-2-yl]-3-methylbenzene
• CAS: 1182848-31-2
• 化学式: C₁₄H₂₁O₃P
• 分子量: 268.293
• InChiKey: IEUHVBQHTHAOHA-ACCUITESSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  18
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 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：

  (E)-diethyl 2-(3-methylphenyl)prop-1-enylphosphonate 在 bis(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate 、 (Sc,Sp)-WalPhos 、 氢气 作用下， 以 二氯甲烷 为溶剂， 20.0 ℃ 、1.01 MPa 条件下， 反应 24.0h， 以98%的产率得到diethyl (2-(3-methylphenyl)propyl)phosphonate
  参考文献：
  名称：

  Enantioselective synthesis of optically active alkylphosphonates via Rh-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates

  摘要：

  The Rh-catalyzed asymmetric hydrogenation of beta-substituted alpha,beta-unsaturated phosphonates using (S-c,S-p)-WalPhos as the chiral ligand is reported, in which a wide range of optically active beta-substituted alkylphosphonates were obtained in good yields and with good to excellent enantioselectivities (86-98% ee). In contrast to the Rh/(R-c,S-a)-FAPhos system previously reported by us, the present catalytic system shows a wider substrate scope, and can perform the hydrogenation under milder reaction conditions. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2012.03.024
• 作为产物：
  描述：

  亚甲基二磷酸四乙酯 、 3'-甲基苯乙酮 在 sodium hydride 作用下， 以 四氢呋喃 、 mineral oil 为溶剂， 反应 0.5h， 以48%的产率得到(E)-diethyl 2-(3-methylphenyl)prop-1-enylphosphonate
  参考文献：
  名称：

  Enantioselective synthesis of optically active alkylphosphonates via Rh-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates

  摘要：

  The Rh-catalyzed asymmetric hydrogenation of beta-substituted alpha,beta-unsaturated phosphonates using (S-c,S-p)-WalPhos as the chiral ligand is reported, in which a wide range of optically active beta-substituted alkylphosphonates were obtained in good yields and with good to excellent enantioselectivities (86-98% ee). In contrast to the Rh/(R-c,S-a)-FAPhos system previously reported by us, the present catalytic system shows a wider substrate scope, and can perform the hydrogenation under milder reaction conditions. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2012.03.024

文献信息

• Enantioselective Synthesis of Optically Active Alkanephos- phonates<i>via</i>Rhodium-Catalyzed Asymmetric Hydrogenation of β-Substituted α,β-Unsaturated Phosphonates with Ferrocene-Based Monophosphoramidite Ligands
  作者：Zheng-Chao Duan、Xiang-Ping Hu、Dao-Yong Wang、Jia-Di Huang、Sai-Bo Yu、Jun Deng、Zhuo Zheng

  DOI：10.1002/adsc.200800388

  日期：2008.9.5

  series of chiral β-substituted alkanephosphonates was synthesized in high enantioselectivities via the first rhodium-catalyzed asymmetric hydrogenation of the corresponding β-substituted-α,β-unsaturated phosphonates using a ferrocene-derived monophosphoramidite ligand, with which up to 99.5% ee have been achieved for the hydrogenation of (E)-substrates and 98.0% ee for (Z)-substrates.

  一系列手性β取代alkanephosphonates的是在高对映选择性合成经由相应的β取代-α的第一铑催化的不对称氢化，β不饱和膦酸酯用二茂铁衍生monophosphoramidite配体，利用该高达99.5％ee值有无（E）底物的氢化反应达到了氢化，（Z）底物的氢化反应达到了98.0％ee。
• Rhodium-Catalyzed Enantioselective Hydrogenation of Unsaturated Phosphonates by ClickFerrophos Ligands
  作者：Takashi Konno、Kenta Shimizu、Kenichi Ogata、Shin-ichi Fukuzawa

  DOI：10.1021/jo300129m

  日期：2012.4.6

  Newly developed ClickFerrophos II ligands were applied in the hydrogenation of alpha,beta-unsaturated phosphonates. The use of a rhodium/ClickFerrophos II catalyst was examined in the hydrogenation of fimctionalized alpha,beta-unsaturated phosphonates and was revealed to be effective for beta-alkyl-beta-aryl or beta-dialkyl phosphonates, (Z)-beta-enolester phosphonates, and alpha-phenylethenyl phosphonates, producing the corresponding chiral phosphonates in good yields with high enantioselectivities (up to 96% ee).
• Cu-catalyzed asymmetric conjugate reduction of β-substituted α,β-unsaturated phosphonates: an efficient synthesis of optically active β-stereogenic alkylphosphonates
  作者：Zheng-Chao Duan、Xiang-Ping Hu、Dao-Yong Wang、Sai-Bo Yu、Zhuo Zheng

  DOI：10.1016/j.tetlet.2009.09.094

  日期：2009.12

  A series of chiral alkylphosphonates bearing beta-stereogenic center were synthesized in good enantioselectivities (up to 95% ee) via the CuH-catalyzed asymmetric conjugate reduction of beta-substituted alpha,beta-unsaturated phosphonates under optimal conditions using Cu(OAc)(2)center dot H2O as the copper source, (R)-SEGPHOS as the ligand. PMHS as the siloxane, and t-BuOH as the additive. (C) 2009 Elsevier Ltd. All rights reserved.
• Enantioselective synthesis of optically active alkylphosphonates via Rh-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates
  作者：Zheng-chao Duan、Lian-zhi Wang、Xin-jian Song、Xiang-ping Hu、Zhuo Zheng

  DOI：10.1016/j.tetasy.2012.03.024

  日期：2012.4

  The Rh-catalyzed asymmetric hydrogenation of beta-substituted alpha,beta-unsaturated phosphonates using (S-c,S-p)-WalPhos as the chiral ligand is reported, in which a wide range of optically active beta-substituted alkylphosphonates were obtained in good yields and with good to excellent enantioselectivities (86-98% ee). In contrast to the Rh/(R-c,S-a)-FAPhos system previously reported by us, the present catalytic system shows a wider substrate scope, and can perform the hydrogenation under milder reaction conditions. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.