5-羟基-5-苯基戊酸甲酯 | 37464-83-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 5-羟基-5-苯基戊酸甲酯
• 英文名称: methyl 5-hydroxy-5-phenylpentanoate
• 英文别名: methyl 5-hydroxy-5-phenyl-butyrate；Methyl-5-hydroxy-5-phenylpentanoat
• CAS: 37464-83-8
• 化学式: C₁₂H₁₆O₃
• 分子量: 208.257
• InChiKey: HOGIOKMCGZJACN-UHFFFAOYSA-N

物化性质

• 沸点：
  319.7±35.0 °C(Predicted)
• 密度：
  1.095±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  5-羟基-5-苯基戊酸甲酯 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 8.0h， 以89%的产率得到6-phenyltetrahydropyran-2-one
  参考文献：
  名称：

  Enzyme mediated kinetic resolution of δ-hydroxy-α,β-unsaturated esters as a route to optically active δ-lactones

  摘要：

  A novel synthetic route to optically active saturated and unsaturated delta-lactones based on enzymatic kinetic resolution and ring-closing metathesis reactions has been proposed. The influence of temperature, co-solvent, organic additives and the substrate structure on the catalytic behavior of selected hydrolases was studied. The substantial impact of the organic co-solvent and surfactant type on the enzymatic activity and enantioselectivity was observed providing enantiomerically pure delta-hydroxy-alpha,beta-unsaturated esters. The established protocol combining enzymatic kinetic resolution with ring closing metathesis was successfully applied in the synthesis of the enantiomerically pure (6R)-phenyl-5,6-dihydro-2H-pyran-2-one which plays crucial role in the synthesis of the number of bioactive compounds. (C) 2017 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2017.05.003
• 作为产物：
  描述：

  4-苯甲酰基丁酸甲酯 在 Cp₂TiCl₂*Zn 、 水 、 2,4,6-collidine hydrochloride 作用下， 反应 24.0h， 生成 5-羟基-5-苯基戊酸甲酯
  参考文献：
  名称：

  钛茂催化，选择性还原水性介质中的酮。通过自由基化学合成仲醇的安全，温和，廉价的方法

  摘要：

  我们在这里报告了一种新方法，用于使用催化量的市售Cp 2 TiCl 2，廉价的Zn粉尘和水作为质子源，将酮还原为仲醇。从机理上讲，反应大概是通过钛氧基进行的。在实践中，这种还原过程具有显着的优势：它显示出令人感兴趣的选择性模式，可在温和条件下使用安全，廉价的试剂进行，并且不需要无水溶剂。在这些条件下，水的质子供体活性避免了通常需要用来减少自由基的常见有毒氢原子供体。该方法对于使用相对便宜的D 2合成氘标记的醇也是非常方便的O作为氘源。

  DOI：

  10.1016/s0040-4039(02)02703-x

文献信息

• Reduction of aromatic and aliphatic keto esters using sodium borohydride/MeOH at room temperature: a thorough investigation
  作者：Juryoung Kim、Kathlia A. De Castro、Minkyung Lim、Hakjune Rhee

  DOI：10.1016/j.tet.2010.04.062

  日期：2010.6

  Reduction of keto esters is a valuable alternative to produce diols. Sodium borohydride/MeOH system at room temperature and short reaction time efficiently reduced α, β, γ, and δ-keto esters having α-keto esters as the most reactive. The ester functionality was reduced effectively due to the presence of oxo group that somehow facilitates the formation of ring intermediate. As expected, the chemoselective

  还原酮酯是生产二醇的有价值的替代方法。在室温和短的反应时间下，硼氢化钠/ MeOH系统有效地还原了以α-酮酸酯为最具反应性的α，β，γ和δ-酮酸酯。由于存在以某种方式促进环中间体形成的氧代基团，有效地降低了酯的官能度。如预期的那样，化学选择性实验表明，使用该系统不会降低酯的官能度。这项研究提出了各种酮酯向其相应的二醇的简单，简便且良性的还原过程。
• An efficient method for the synthesis of hydrocyclopenta[1,2-b]furan with various side chains at 3a-position
  作者：Weihui Zhong、Jun Xie、Xian Peng、Tomoyuki Kawamura、Hisao Nemoto

  DOI：10.1016/j.tetlet.2005.07.164

  日期：2005.10

  (3aS∗,1aR∗)-1a-Methoxy-3a-methoxycarbonyl-2,3,4,5,6,3a-hexahydrocyclopenta[1,2-b]furan was prepared in 96% overall yield from 2-methoxycarbonylated cyclopenta-1-one in two steps. This furan derivative is used as a divergent intermediate in the synthesis of our originally designed chiral resolving agents having various substitutions. During the preliminary evaluation of divergent synthetic products

  （3 -a S ∗，1a R ∗）-1a-Methoxy-3a-methoxymethoxy-2,3,4,5,6,3a-hexahydrocyclopenta [1,2- b ]呋喃以2-甲氧基羰基化反应的总收率为96％制备两个步骤中的cyclopenta-1-one。该呋喃衍生物在我们最初设计的具有各种取代基的手性拆分剂的合成中用作发散中间体。在对各种合成产物进行初步评估时，发现3a-（芴-9-亚甲基）-2,3,4,5,3a-五氢环戊[1,2- b ]呋喃是一种显着改进的手性拆分剂。用于仲醇。
• Masked β-, γ- and δ-lithium ester enolates: useful reagents in organic synthesis
  作者：Isidro M Pastor、Miguel Yus

  DOI：10.1016/s0040-4039(00)02172-9

  日期：2001.2

  acid-catalysed methanolysis, to functionalised methyl esters 2. In the case of chlorotrimethylsilane, hydroxyethyl esters 2′ are isolated. The reaction is also applied to bicyclic orthoesters 3: whereas β-chloro derivatives and carbonyl compounds gives directly γ-lactones 4 after hydrolysis, the corresponding γ-chloro derivative affords the expected methyl esters after methanolysis.

  ω氯原酸酯的反应1与锂和4,4'-二-催化量叔在不同亲电[卜的存在-butylbiphenyl（DTBB，5％摩尔）吨CHO，苯甲醛，（CH 2）5在−78°C下的THF中，CO，Et 2 CO，PhCOMe，PhCHNPh，Me 3 SiCl]在水解和酸催化的甲醇分解后，会生成官能化的甲酯2。在氯代三甲基硅烷的情况下，分离出羟乙基酯2'。该反应也适用于双环原酸酯3：而β-氯衍生物和羰基化合物直接生成γ-内酯4 水解后，相应的γ-氯衍生物在甲醇分解后可提供预期的甲酯。
• Masked ω-Lithio Ester Enolates: Synthetic Applications
  作者：Miguel Yus、Rosario Torregrosa、Isidro Pastor

  DOI：10.3390/90500330

  日期：——

  The protocol of lithiation by means of lithium and a catalytic (5% molar) amount of DTBB (4,4’-di-tert-butylbiphenyl), applied to ω-chloro ortho ester 6 under Barbier-type conditions gives, after final acid-catalyzed methanolysis, the corresponding functionalized esters 8 or 9 (for chlorotrimethylsilane as electrophile) or, after ortho ester deprotection and acid catalyzed treatment, the δ-lactones 11. The procedure is also practical for bicyclic ortho esters 14: the β-chloro OBO ester derivate generates the γ- lactones 15 and the γ-chloro OBO ester gives corresponding esters 8.

  通过锂和催化量（5%摩尔）的DTBB（4,4'-二叔丁基联苯）进行锂化反应的协议，应用于ω-氯代原酸酯6在Barbier型条件下，经最终酸催化的甲醇分解反应，得到相应的功能化酯8或9（以氯三甲基硅烷为亲电试剂），或经过原酸酯脱保护和酸催化处理，得到δ-内酯11。该方法也适用于双环原酸酯14：β-氯代OBO酯衍生物产生γ-内酯15，而γ-氯代OBO酯则得到相应的酯8。
• Warnhoff, E. W.; Wong, Margaret Y. H.; Raman, P. Sundara, Canadian Journal of Chemistry, 1981, vol. 59, p. 688 - 696
  作者：Warnhoff, E. W.、Wong, Margaret Y. H.、Raman, P. Sundara

  DOI：——

  日期：——