3-phenylpropanoic acid methyl-(S)-mandelate ester | 85805-96-5

• 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: 3-phenylpropanoic acid methyl-(S)-mandelate ester
• 英文别名: [(1S)-2-methoxy-2-oxo-1-phenylethyl] 3-phenylpropanoate
• CAS: 85805-96-5
• 化学式: C₁₈H₁₈O₄
• 分子量: 298.339
• InChiKey: QYURCFHSNAVCDA-KRWDZBQOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  22
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  L-扁桃酸甲酯 、 3-苯基丙酸 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 生成 3-phenylpropanoic acid methyl-(S)-mandelate ester
  参考文献：
  名称：

  1 H和2 H核磁共振测定α-氘代伯羧酸，醇和胺的对映体纯度和绝对构型

  摘要：

  α-氘代伯羧酸的对映体组成和绝对构型可以通过对（S）-2-羟基-2-苯基甲基乙酸甲酯（2）的相应酯进行1 H和2 H核磁共振分析来准确确定。用（S）-2-乙酰氧基-2-苯基乙酸（3）和（-）-樟脑酰氯（1）作为手性试剂的类似方法使得能够测定α-氘代伯醇和伯胺的对映体纯度。这些手性试剂还可用于确定手性仲酸，醇和胺的对映体组成。

  DOI：

  10.1039/p29830000083

文献信息

• ¹H and²H nuclear magnetic resonance determination of the enantiomeric purity and absolute configuration of α-deuteriated primary carboxylic acids, alcohols, and amines
  作者：David Parker

  DOI：10.1039/p29830000083

  日期：——

  The enantiomeric composition and absolute configuration of α-deuteriated primary carboxylic acids may be accurately determined by 1H and 2H nuclear magnetic resonance analysis of the corresponding esters of (S)-methyl 2-hydroxy-2-phenylethanoate (2). Similar methods with (S)-2-acetoxy-2-phenylethanoic acid (3) and (–)-camphanoyl chloride (1) as chiral reagents have enabled the enantiomeric purity of

  α-氘代伯羧酸的对映体组成和绝对构型可以通过对（S）-2-羟基-2-苯基甲基乙酸甲酯（2）的相应酯进行1 H和2 H核磁共振分析来准确确定。用（S）-2-乙酰氧基-2-苯基乙酸（3）和（-）-樟脑酰氯（1）作为手性试剂的类似方法使得能够测定α-氘代伯醇和伯胺的对映体纯度。这些手性试剂还可用于确定手性仲酸，醇和胺的对映体组成。
• Reversal of Enantioselectivity in the Hydroformylation of Styrene with [2<i>S,</i>4<i>S</i>-BDPP]Pt(SnCl₃)Cl at High Temperature Arises from a Change in the Enantioselective-Determining Step
  作者：Charles P. Casey、Susie C. Martins、Maureen A. Fagan

  DOI：10.1021/ja0318479

  日期：2004.5.1

  Deuterioformylation of styrene catalyzed by [(2S,4S)-BDPP]Pt(SnCl3)Cl at 39 degreesC gave 3-phenylpropanal (3) and 2-phenylpropanal (2) (n:i = 1.8, 71% ee (S)-2) with deuterium only beta to the aldehyde carbonyl and in the formyl group. Small amounts of deuterium were also found in the internal (2.8%), cis terminal (1.4%), and trans terminal (1.3%) vinyl positions of the recovered styrene. Deuterioformylation of styrene at 98 degreesC gave 3- (3) and 2-phenylpropanal (2) (n:i = 2.3, 10% ee (R)-2) with deuterium both alpha and beta to the aldehyde carbonyl and in the formyl group. Deuterium was also found in the internal (20%), cis terminal (12%), and trans terminal (12%) vinyl positions of the recovered styrene. These deuterioformylation results establish that platinum hydride addition to styrene is largely irreversible at 39 degreesC but reversible at 98 degreesC. Hydroformylation of (E)- and (Z)-beta-deuteriostyrene at 40 degreesC, followed by oxidation of the aldehydes to acids, and subsequent derivitization to the (S)-mandelate esters confirmed that 84% of 2-phenylpropanal (2) arises from platinum hydride addition to the si-face of styrene, while 73% of 3-phenylpropanal (3) arises from platinum hydride addition to the re-face of styrene. At 100 degreesC, the effect of variable H-2 and CO pressure on n:i, % ee, and TOF of hydroformylation of styrene was investigated. The results are consistent with enantioselectivity not being fully determined until the final hydrogenolysis of a platinum acyl intermediate.