(3S)-nonan-3-yl (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoate | 139199-71-6

• 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: (3S)-nonan-3-yl (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoate
• 英文别名: (3R,2R)-nonan-3-yl 3,3,3-trifluoro-2-methoxy-2-phenylpropanoate
• CAS: 139199-71-6
• 化学式: C₁₉H₂₇F₃O₃
• 分子量: 360.417
• InChiKey: SFRLQFFIRWMPQB-SJLPKXTDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.38
• 重原子数：
  25.0
• 可旋转键数：
  10.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.63
• 拓扑面积：
  35.53
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  己基溴化镁 在 12-冠醚-4 三异丙氧基氯化钛 、 4-二甲氨基吡啶 、 Ti-TADDOLate 作用下， 以 氯仿 为溶剂， 反应 0.5h， 生成 (3S)-nonan-3-yl (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoate
  参考文献：
  名称：

  Ti-TADDOLate-catalyzed, highly enantioselective addition of alkyl- and aryl-titanum derivatives to aldehydes

  摘要：

  Toluene-ether or toluene-hexane solutions of aryl and alkyl triisopropoxy titanium reagents (free of Li, Mg, or Zn salts) are prepared from the corresponding Li or Grignard reagents and ClTi((OPr)-Pr-i)(3), with careful removal of salts (centrifugation of LiCl or of dioxane.MgX(2), and addition of 12-crown-4). The solutions of the organotitanium compounds are combined with one equiv. of an aldehyde and 0.2 equiv. of (R,R)-diisopropoxy-(alpha,alpha,alpha',alpha'-tetraphenyl-2,2-dimethyl-1,3-dioxolane-4,5-dimethanolato) titanium (Ti-TADDOLate 3) at dry-ice temperature. Warming up to room temperature leads to nucleophilic addition to the (Si)-face of the aldehydes with enantioselectivities as high as 99.5 : 0.5 (products 4 - 33 in Scheme 4). Functional groups or protecting groups and branching in the Ti-R group and in the aldehyde must be remote from the reacting centers. Aryl groups can be added to aldehydes by this method. - In contrast to all the enantioselective R(2)Zn additions to aldehydes, in which only one R-group is actually transferred, a twice as economic use is made of the originally employed R-metal reagent in the method described here. - A procedure for multigram preparation of the spiro-Ti-TADDOLate (2) employed for the in situ generation of the catalyst (3) is described, and details of the determination of enantiomer ratios (er) by GC and NMR methods are given (Tab. 2, 3). The mechanistic interpretation of Ti-TADDOLate-mediated nucleophilic additions as derived previously (ref.(4e)) is also compatible with this monometallic variant of the method.

  DOI：

  10.1016/s0040-4020(01)90475-2

文献信息

• Synthesis of Chiral Pyridylphenols for the Enantioselective Addition of Diethylzinc to Aldehydes
  作者：Pei-Shan Wu、Chinpiao Chen

  DOI：10.1002/jccs.201100474

  日期：2012.6

  Chiral 8‐substituted 2‐(8,10,10‐trimethyl‐6‐aza‐tricyclo[7.1.1.02,7]undeca‐2(7),3,5‐trien‐5‐yl)‐phenols were prepared from a high enantiopurity (>97% ee) of (1R)‐(+)‐α‐pinene, and assessed in the enantioselective addition of diethylzinc to substituted benzaldehydes, giving the (S)‐alcohols with enantiomeric excess ranging from 33% to 89%. Interestingly, in all cases, except for those of ortho‐chlorobenzaldehyde

  制备了手性8取代的2-（8,10,10-三甲基-6-氮杂-三环[7.1.1.0 2,7 ] undeca -2（7），3,5-三烯-5-基）酚（1 R）-（+）-α-pine烯的高对映体纯度（> 97％ee），并通过将二乙基锌对映体选择性添加到取代的苯甲醛中进行评估，得到的（S）-对映体过量度为33％至89％。有趣的是，在所有情况下，除邻氯苯甲醛，邻甲氧基和对甲氧基苯甲醛外，ee均> 71％。Hammett取代常数与二乙基锌添加到邻或对位的对映体过量的关系图预取代的苯甲醛呈线性关系。
• Novel C2-symmetric chiral O,N,N,O-tetradentate 2,2-bipyridyldiolpropane ligands: synthesis and application in asymmetric diethylzinc addition to aldehydes
  作者：Yi-Shan Shih、Ramalingam Boobalan、Chinpiao Chen、Gene-Hsian Lee

  DOI：10.1016/j.tetasy.2013.12.020

  日期：2014.2

  C2-symmetric chiral O,N,N,O-tetradentate 2,2-bipyridyldiolpropane ligands is described. The Mukaiyama–Michael reaction was applied as an important reaction for the synthesis of 2,2-bipyridylpropane 9. Among the ligands synthesized, ligand 11 exhibits excellent chiral induction (up to 97% ee) in diethylzinc addition to various aldehydes. The use of additional Lewis acid such as Ti(OiPr)4 in diethylzinc addition

  描述了C 2对称的手性O，N，N，O-四齿2,2-联吡啶二醇二醇丙烷配体的合成。Mukaiyama–Michael反应被用作合成2，2-联吡啶丙烷9的重要反应。在合成的配体中，配体11在二乙基锌和各种醛类化合物中均表现出出色的手性诱导（至多97％ee）。对于本催化体系，不需要在二乙基锌加成反应中使用额外的路易斯酸，例如Ti（O i Pr）4。