(2R)-2-methyl-N,3-diphenylpropanamide | 586965-33-5

• 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: (2R)-2-methyl-N,3-diphenylpropanamide
• CAS: 586965-33-5
• 化学式: C₁₆H₁₇NO
• 分子量: 239.317
• InChiKey: NNJGVGOWGZPDBL-CYBMUJFWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (2R)-2-methyl-N,3-diphenylpropanamide 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 以100%的产率得到
  参考文献：
  名称：

  酰胺的α-手性中心的高对映建设通过α的铱催化加氢，β -不饱和酰胺

  摘要：

  Abstractmagnified imageThe chiral center at the α‐position of amides is installed in excellent enantioselectivity via the iridium‐catalyzed asymmetric hydrogenation of α,β‐unsaturated amides under mild conditions. Even aliphatic amides are suitable substrates. The presence of a hydrogen atom on the nitrogen of the amide is important for the enantioselectivity of the reaction.

  DOI：

  10.1002/adsc.200900080
• 作为产物：
  描述：

  2-苄基丙烯酸 在 4-二甲氨基吡啶 、 C₃₂H₁₂BF₂₄^(1-)*C₅₄H₇₁IrNP⁽¹⁺⁾ 、 氢气 、 caesium carbonate 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 为溶剂， 反应 4.0h， 生成 (2R)-2-methyl-N,3-diphenylpropanamide
  参考文献：
  名称：

  α取代丙烯酸的催化的对映选择性氢化由铱配合物的手性螺胺膦配体

  摘要：

  高活性：与手性螺环氨基膦配体的铱络合物的合成和作为催化剂用于α-取代的丙烯酸的不对称氢化（参见方案）施用。该复合物具有高活性的催化剂，显示出6000 h最多的周转频率-1，并且催化剂载量可减少到0.01％（摩尔）。

  DOI：

  10.1002/anie.201204363

文献信息

• SYNTHESIS AND USE OF OXA-SPIRODIPHOSPHINE LIGAND
  申请人：SHENZHEN CATALYS SCIENCE AND TECHNOLOGY CO., LTD.

  公开号：US20200308206A1

  公开（公告）日：2020-10-01

  The present invention relates to the technical field of chiral synthesis, and specifically provides a new type of oxa-spirodiphosphine ligands. The bisphosphine ligand is prepared with oxa-spirobisphenol as a starting material after triflation, palladium catalyzed coupling with diaryl phosphine oxide, reduction of trichlorosilane, further palladium catalyzed coupling with diaryl phosphine oxide, and further reduction of trichlorosilane. The oxa-spiro compound has central chirality, and thus includes L-oxa-spirodiphosphine ligand and R-oxa-spirodiphosphine ligand. The racemic spirodiphosphine ligand is capable of being synthesized from racemic oxa-spirobisphenol as a raw material. The present invention can be used as a chiral ligand in the asymmetric hydrogenation of unsaturated carboxylic adds. The complex of the ligand with ruthenium can achieve an enantioselectivity of greater than 99% in the asymmetric hydrogenation of methyl-cinnamic acid.

  本发明涉及手性合成技术领域，具体提供了一种新型的氧杂环螺环二膦配体。该双膦配体是通过氧杂环螺双苯酚作为起始材料，经过三氟甲磺酰化、钯催化偶联二芳基氧膦、三氯硅烷还原、进一步的钯催化偶联二芳基氧膦和进一步的三氯硅烷还原制备而成。氧杂环螺化合物具有中心手性，因此包括L-氧杂环螺环二膦配体和R-氧杂环螺环二膦配体。外消旋螺环二膦配体可从外消旋氧杂环螺双苯酚作为原料合成。本发明可用作不饱和羧酸不对称氢化的手性配体。该配体与钌的配合物在对甲基肉桂酸的不对称氢化中可实现大于99%的对映选择性。
• Enantioselective Hydrogenation of α-Substituted Acrylic Acids Catalyzed by Iridium Complexes with Chiral Spiro Aminophosphine Ligands
  作者：Shou-Fei Zhu、Yan-Bo Yu、Shen Li、Li-Xin Wang、Qi-Lin Zhou

  DOI：10.1002/anie.201204363

  日期：2012.8.27

  Highly active: Iridium complexes with chiral spiro aminophosphine ligands were synthesized and applied as catalysts for the asymmetric hydrogenation of α‐substituted acrylic acids (see scheme). The complexes were highly active catalysts, showing turnover frequencies of up to 6000 h−1, and catalyst loadings could be reduced to 0.01 mol %.

  高活性：与手性螺环氨基膦配体的铱络合物的合成和作为催化剂用于α-取代的丙烯酸的不对称氢化（参见方案）施用。该复合物具有高活性的催化剂，显示出6000 h最多的周转频率-1，并且催化剂载量可减少到0.01％（摩尔）。
• Highly Enantioselective Construction of the α-Chiral Center of Amides<i>via</i>Iridium-Catalyzed Hydrogenation of α,β-Unsaturated Amides
  作者：Wei-Jing Lu、Xue-Long Hou

  DOI：10.1002/adsc.200900080

  日期：2009.6

  Abstractmagnified imageThe chiral center at the α‐position of amides is installed in excellent enantioselectivity via the iridium‐catalyzed asymmetric hydrogenation of α,β‐unsaturated amides under mild conditions. Even aliphatic amides are suitable substrates. The presence of a hydrogen atom on the nitrogen of the amide is important for the enantioselectivity of the reaction.