Methyl (2Z,4R)-4-benzyloxy-2-pentenoate | 160797-54-6

• 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: Methyl (2Z,4R)-4-benzyloxy-2-pentenoate
• 英文别名: methyl (R,Z)-4-benzyloxypent-2-enoate；methyl (Z,4R)-4-phenylmethoxypent-2-enoate
• CAS: 160797-54-6
• 化学式: C₁₃H₁₆O₃
• 分子量: 220.268
• InChiKey: HQXFTCDXKMAFJW-TYBABMIJSA-N

物化性质

• 沸点：
  311.8±30.0 °C(Predicted)
• 密度：
  1.055±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  Methyl (2Z,4R)-4-benzyloxy-2-pentenoate 在 重铬酸吡啶 、 氢氟酸 、 对苯二酚 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 生成 (1R,6R)-6-((R)-1-Benzyloxy-ethyl)-2-oxo-cyclohex-3-enecarboxylic acid methyl ester
  参考文献：
  名称：

  Total Synthesis of (-)-Grayanotoxin III

  摘要：

  Total synthesis of(-)-grayanotoxin III (3), a unique tetracyclic diterpene isolated from the leaves of various plants of the family Ericaceae, has been successfully accomplished featuring the highly stereoselective cyclization reactions induced by SmI2.

  DOI：

  10.1021/jo00098a009
• 作为产物：
  描述：

  (R)-(2-(benzyloxy)propyl)(phenyl)sulfane 在 吡啶 、 sodium periodate 、 三氟乙酸酐 作用下， 以 甲醇 、 二氯甲烷 、 水 为溶剂， 生成 Methyl (2Z,4R)-4-benzyloxy-2-pentenoate
  参考文献：
  名称：

  Total Synthesis of (-)-Grayanotoxin III

  摘要：

  Total synthesis of(-)-grayanotoxin III (3), a unique tetracyclic diterpene isolated from the leaves of various plants of the family Ericaceae, has been successfully accomplished featuring the highly stereoselective cyclization reactions induced by SmI2.

  DOI：

  10.1021/jo00098a009

文献信息

• Selectivity Guidelines and a Reductive Elimination-Based Model for Predicting the Stereochemical Course of Conjugate Addition Reactions of Organocuprates to γ-Alkoxy-α,β-enoates
  作者：Artem S. Kireev、Madhuri Manpadi、Alexander Kornienko

  DOI：10.1021/jo052383v

  日期：2006.3.31

  steric and stereoelectronic factors involved in the transition state of the reductive elimination step is proposed and then used to interpret the results of systematic studies of arylcuprate conjugate addition reactions with cis and trans γ-alkoxy-α,β-enoates. The results give rise to the following selectivity guidelines for this process. To achieve high anti-addition diastereoselectivities the use of trans

  当前用于预测有机铜偶联物加成过程的立体化学结果的模型侧重于亲核加成步骤，即立体化学确定。最近的动力学，NMR，动力学同位素效应和理论密度泛函研究强烈支持以下提议：在这些过程中，立体化学偏好是由还原性消除步骤决定的，该过程将Cu III转化为Cu I中间体。提出了一种新的模型，该模型考虑了参与还原消除步骤过渡态的各种空间和立体电子因素，然后用于解释系统研究顺式和反式γ-烷氧基-α，β-烯酸酯的芳基铜酸酯共轭加成反应的结果。 。结果产生了针对该过程的以下选择性指南。为了获得高的抗加成非对映选择性，建议使用在γ位带有庞大的非烷氧基取代基的反式酯。虽然不利于stereoelectronics顺式此外，适当大小的γ-取代基的明智选择可以导致主要形成的顺式产物，尤其是与顺enoates。然而，通过使用γ-氨基-α，β-烯酸酯可以实现高的共选择性。
• Alkylation and aldol reactions of acyl derivatives of N-1-(1′-naphthyl)ethyl-O-tert-butylhydroxylamine: asymmetric synthesis of α-alkoxy-, α-substituted-β-alkoxy- and α,β-dialkoxyaldehydes
  作者：Alexander N. Chernega、Stephen G. Davies、Ai M. Fletcher、Christopher J. Goodwin、David Hepworth、R. Shyam Prasad、Paul M. Roberts、Edward D. Savory、Andrew D. Smith、James E. Thomson

  DOI：10.1016/j.tet.2010.03.105

  日期：2010.6

  Treatment of a range of O-protected glycolate derivatives of the chiral auxiliary N-1-(1'-naphthyl)ethyl-O-tert-butylhydroxylamine with KHMDS in the presence of 18-crown-6 followed by addition of an alkyl halide generates alpha-substituted derivatives with very high levels of diastereoselectivity. Alternatively, reaction of the potassium enolate of a propanoate or O-protected glycolate derivative of N-1-(1'-naphthyl)ethyl-O-tert-butylhydroxylamine with a range of aldehydes gives syn-aldol products with high levels of diastereoselectivity. These adducts may be reductively cleaved with LiAlH(4) to give enantiopure alpha-alkoxy-, alpha-substituted-beta-alkoxy- and alpha,beta-dialkoxyaldehydes in good yield. (C) 2010 Elsevier Ltd. All rights reserved.
• Total Synthesis of (-)-Grayanotoxin III
  作者：Toshiyuki Kan、Seijiro Hosokawa、Shinji Nara、Masato Oikawa、Shinya Ito、Fuyuhiko Matsuda、Haruhisa Shirahama

  DOI：10.1021/jo00098a009

  日期：1994.9

  Total synthesis of(-)-grayanotoxin III (3), a unique tetracyclic diterpene isolated from the leaves of various plants of the family Ericaceae, has been successfully accomplished featuring the highly stereoselective cyclization reactions induced by SmI2.