diethyl [2-(2R,5R)-(2,5-dimethylpyrrolidin-1-yl)ethyl]phosphinite | 1026014-38-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机膦酸及其衍生物
• 英文名称: diethyl [2-(2R,5R)-(2,5-dimethylpyrrolidin-1-yl)ethyl]phosphinite
• 英文别名: (2R,5R)-1-(2-diethoxyphosphorylethyl)-2,5-dimethylpyrrolidine
• CAS: 1026014-38-9
• 化学式: C₁₂H₂₆NO₃P
• 分子量: 263.317
• InChiKey: LCOBWHXDUCPRKG-VXGBXAGGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  17
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  38.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  diethyl [2-(2R,5R)-(2,5-dimethylpyrrolidin-1-yl)ethyl]phosphinite 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 生成 (2R,5R)-1-[2-((2R,5R)-2,5-Dimethyl-phospholan-1-yl)-ethyl]-2,5-dimethyl-pyrrolidine; compound with borane
  参考文献：
  名称：

  Influence of Steric Symmetry and Electronic Dissymmetry on the Enantioselectivity in Palladium-Catalyzed Allylic Substitutions

  摘要：

  Chiral P,N-ligands with pseudo-C-2 and pseudo-C-s symmetry based on chiral pyrrolidine and phospholane rings or on dinaphthatodihydroazepino and dinaphthatodihydrophosphepino moieties were prepared and assessed in the palladium-catalyzed allylic substitutions of allylic acetates. Higher selectivity was achieved with pseudo-C-2-symmetric ligands based on the binaphthyl skeleton than with the analogous C-2-symmetric P,P- and N,N-analogues. Pseudo-C-2-type ligands had properties superior to those of pseudo-meso-type ligands when 1,3-diphenyl-2-propenyl acetate was used as a substrate, whereas the reverse situation was found for 3-cyclohexenyl acetate. Chirally flexible ligands, prepared by substitution of one of the rigid binaphthyl skeletons for a flexible biphenyl system, were found to induce chirality to the same extent as a 1:1 mixture of the rigid ligands.

  DOI：

  10.1021/jo026889e
• 作为产物：
  描述：

  diethyl (2-aminoethyl)phosphonate 、 (4S,7S)-4,7-dimethyl-1,3,2-dioxathiepane 2,2-dioxide 反应 48.0h， 以47%的产率得到diethyl [2-(2R,5R)-(2,5-dimethylpyrrolidin-1-yl)ethyl]phosphinite
  参考文献：
  名称：

  Influence of Steric Symmetry and Electronic Dissymmetry on the Enantioselectivity in Palladium-Catalyzed Allylic Substitutions

  摘要：

  Chiral P,N-ligands with pseudo-C-2 and pseudo-C-s symmetry based on chiral pyrrolidine and phospholane rings or on dinaphthatodihydroazepino and dinaphthatodihydrophosphepino moieties were prepared and assessed in the palladium-catalyzed allylic substitutions of allylic acetates. Higher selectivity was achieved with pseudo-C-2-symmetric ligands based on the binaphthyl skeleton than with the analogous C-2-symmetric P,P- and N,N-analogues. Pseudo-C-2-type ligands had properties superior to those of pseudo-meso-type ligands when 1,3-diphenyl-2-propenyl acetate was used as a substrate, whereas the reverse situation was found for 3-cyclohexenyl acetate. Chirally flexible ligands, prepared by substitution of one of the rigid binaphthyl skeletons for a flexible biphenyl system, were found to induce chirality to the same extent as a 1:1 mixture of the rigid ligands.

  DOI：

  10.1021/jo026889e

文献信息

• Influence of Steric Symmetry and Electronic Dissymmetry on the Enantioselectivity in Palladium-Catalyzed Allylic Substitutions
  作者：Jean-Luc Vasse、Robert Stranne、Raivis Zalubovskis、Carole Gayet、Christina Moberg

  DOI：10.1021/jo026889e

  日期：2003.4.1

  Chiral P,N-ligands with pseudo-C-2 and pseudo-C-s symmetry based on chiral pyrrolidine and phospholane rings or on dinaphthatodihydroazepino and dinaphthatodihydrophosphepino moieties were prepared and assessed in the palladium-catalyzed allylic substitutions of allylic acetates. Higher selectivity was achieved with pseudo-C-2-symmetric ligands based on the binaphthyl skeleton than with the analogous C-2-symmetric P,P- and N,N-analogues. Pseudo-C-2-type ligands had properties superior to those of pseudo-meso-type ligands when 1,3-diphenyl-2-propenyl acetate was used as a substrate, whereas the reverse situation was found for 3-cyclohexenyl acetate. Chirally flexible ligands, prepared by substitution of one of the rigid binaphthyl skeletons for a flexible biphenyl system, were found to induce chirality to the same extent as a 1:1 mixture of the rigid ligands.