(2R,3R)-4-(4-methoxyphenyl)-3-methylbutan-2-ol

• 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,3R)-4-(4-methoxyphenyl)-3-methylbutan-2-ol
• 化学式: C₁₂H₁₈O₂
• 分子量: 194.274
• InChiKey: BCPWQCRAQGOZHO-NXEZZACHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (E)-N-methoxy-N-methyl-3-(4-methoxyphenyl)-2-methyl-acrylamide 在 氢气 、 苯甲酰胺 、 C₃₈H₄₅IrN₂P⁽¹⁺⁾*C₃₂H₁₂BF₂₄^(1-) 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 20.0 ℃ 、5.0 MPa 条件下， 反应 17.0h， 生成 (2R,3R)-4-(4-methoxyphenyl)-3-methylbutan-2-ol
  参考文献：
  名称：

  立体选择性铱-N,P催化共轭烯酮双加氢制饱和醇

  摘要：

  前手性底物（如酮和烯烃）的不对称氢化是构建立体中心的重要工具，并且为此目的开发了多种催化体系。然而，由于π体系的性质不同，烯烃和酮的加氢反应通常由不同的金属配合物催化。本文介绍了添加剂对 Ir-N,P 催化的烯酮加氢影响的研究。苯甲酰胺的结合和活性催化剂的开发开启了 Crabtree 型配合物对 C=O 键加氢的新型反应模式。建议苯甲酰胺的作用是延长二氢化铱中间体的寿命，该中间体易于发生不可逆的三聚化，使催化剂失活。ee , 99/1 dr) 导致烯酮的高度立体选择性还原。

  DOI：

  10.1021/jacs.2c02422

文献信息

• Toward Ideality: The Synthesis of (+)-Kalkitoxin and (+)-Hydroxyphthioceranic Acid by Assembly-Line Synthesis
  作者：Sebastien Balieu、Gayle E. Hallett、Matthew Burns、Teerawut Bootwicha、John Studley、Varinder K. Aggarwal

  DOI：10.1021/ja512875g

  日期：2015.4.8

  The iterative homologation of boronic esters using chiral lithiated benzoate esters and chloromethyllithium has been applied to the highly efficient syntheses of two natural products, (+)-kalkitoxin and (+)-hydroxyphthioceranic acid. The chiral lithiated benzoate esters (>99% ee) were generated from the corresponding stannanes, which themselves were prepared by HoppeBeak deprotonation of ethyl 2,4,6-triisopropyl-benzoate with s-BuLi in the presence of (+)- or (-)-sparteine and trapping with Me3SnCl followed by recrystallization. In addition, it was found that purification between several homologations could be avoided, substantially increasing both chemical and manpower efficiency. In the case of (+)-kalkitoxin, six iterative homologations were conducted on commercially available p-MeOC(6)H(4)CH(2)Bpin to build up the core of the molecule before the C-B bond was converted into the desired CN bond, without purification of intermediates. In the case of (+)-hydroxyphthioceranic acid, 16 iterative homologations were conducted on p-MeOC(6)H(4)Bpin with only four intermediate purifications before oxidation of the C-B bond to the desired alcohol. The stereocontrolled and efficient syntheses of these complex molecules highlight the power of iterative chemical synthesis using boronic esters.
• Stereoselective Iridium-N,P-Catalyzed Double Hydrogenation of Conjugated Enones to Saturated Alcohols
  作者：Bram B. C. Peters、Jia Zheng、Suppachai Krajangsri、Pher G. Andersson

  DOI：10.1021/jacs.2c02422

  日期：2022.5.18

  multitude of catalytic systems have been developed for this purpose. However, due to the different nature of the π-system, the hydrogenation of olefins and ketones is normally catalyzed by different metal complexes. Herein, a study on the effect of additives on the Ir-N,P-catalyzed hydrogenation of enones is described. The combination of benzamide and the development of a reactive catalyst unlocked a

  前手性底物（如酮和烯烃）的不对称氢化是构建立体中心的重要工具，并且为此目的开发了多种催化体系。然而，由于π体系的性质不同，烯烃和酮的加氢反应通常由不同的金属配合物催化。本文介绍了添加剂对 Ir-N,P 催化的烯酮加氢影响的研究。苯甲酰胺的结合和活性催化剂的开发开启了 Crabtree 型配合物对 C=O 键加氢的新型反应模式。建议苯甲酰胺的作用是延长二氢化铱中间体的寿命，该中间体易于发生不可逆的三聚化，使催化剂失活。ee , 99/1 dr) 导致烯酮的高度立体选择性还原。