(-)-(S,E)-3-Penten-2-yl acetate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (-)-(S,E)-3-Penten-2-yl acetate
• 英文别名: [(E,2S)-pent-3-en-2-yl] acetate
• 化学式: C₇H₁₂O₂
• 分子量: 128.171
• InChiKey: ICPQNSSICXBOIU-OVCGOVNKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (-)-(S,E)-3-Penten-2-yl acetate 、 叔丁基二甲基氯硅烷 在 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 生成 [tert-butyl(dimethyl)silyl] (E,3S)-3-methylhex-4-enoate
  参考文献：
  名称：

  Iterative enolate Claisen rearrangements: versatile route to optically pure 2,7-nonadiene-5-carboxylic acids

  摘要：

  A short, versatile, and diastereoselective method of preparing 2,7-nonadiene-5-carboxylic acids by an iterative enolate Claisen rearrangement procedure has been developed. Homochiral (E)- and (Z) secondary allylic alcohols 1-4, prepared from (S)-(-)-ethyl lactate, were esterified with acetic acid and enolized, and the resulting silyl ketene acetals were warmed to room temperature to effect [3,3]-sigmatropic rearrangement to 4-hexenoic acids 5-8. Esterification of these acids with alcohols 1-4 followed by a second enolate Claisen rearrangement delivered the targeted 2,7-nonadiene-5-carboxylic acids with high diastereoselectivity. This second [3,3]-sigmatropic rearrangement provides well-placed and potentially synthetically useful functionality and stereochemistry.

  DOI：

  10.1021/jo00069a019
• 作为产物：
  描述：

  (S)-2-(tert-Butyl-dimethyl-silanyloxy)-4-(diphenyl-phosphinoyl)-pentan-3-one 在 吡啶 、 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 四丁基氟化铵 、 sodium hydride 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 23.0h， 生成 (-)-(S,E)-3-Penten-2-yl acetate
  参考文献：
  名称：

  Pure enantiomers from retro-diels-alder processes

  摘要：

  DOI：

  10.1016/s0957-4166(00)86325-9

文献信息

• Highly Enantioselective Synthesis of 3-Substituted Furanones by Palladium-Catalyzed Kinetic Resolution of Unsymmetrical Allyl Acetates
  作者：Bin Mao、Yining Ji、Martín Fañanás-Mastral、Giuseppe Caroli、Auke Meetsma、Ben L. Feringa

  DOI：10.1002/anie.201109075

  日期：2012.3.26

  near‐perfect Pd‐catalyzed kinetic resolution of 1,3‐disubstituted unsymmetrical allylic acetates uses silyl enol ethers as nucleophiles to access the important 3‐substituted‐furanone scaffold (see scheme; DACH=diaminocyclohexyl, dba=dibenzylideneacetone). The reaction proceeds under mild conditions and provides the desired products with excellent chemo‐, regio‐, and enantioselectivity.

  解决问题：1,3-二取代的不对称烯丙基乙酸酯的Pd催化动力学拆分接近完美，使用甲硅烷基烯醇醚作为亲核试剂来访问重要的3-取代的呋喃酮骨架（请参见方案; DACH =二氨基环己基，dba =二苄叉基丙酮） 。反应在温和的条件下进行，可提供具有优异的化学，区域和对映选择性的所需产物。
• Palladium-Catalyzed Enantioselective Allylic Alkylation of Thiocarboxylate Ions:  Asymmetric Synthesis of Allylic Thioesters and Memory Effect/Dynamic Kinetic Resolution of Allylic Esters
  作者：Bernhard J. Lüssem、Hans-Joachim Gais

  DOI：10.1021/jo049756x

  日期：2004.6.1

  matched acetate of ≥99% ee and the mismatched acetate of ≥99% ee with KSAc. The acetates not only reacted with different enantioselectivities and rates but also suffered an unexpected and concomitant palladium-catalyzed racemization in the presence of the chiral ligand. This led in the case of the mismatched acetate to a temporary dynamic kinetic resolution (DKR) that featured a racemization of the

  以N，N '-（（1 R，2 R）-1,2-环己二基双[2-（二苯基膦基）-苯甲酰胺]为配体，用外消旋的环状和无环烯丙基酯进行钯催化的KSAc和KSBz的烯丙基烷基化反应相应的具有高ee值和高收率的烯丙基硫代酯。在H 2存在下环状烯丙基碳酸酯与KSAc的反应O伴随底物的部分钯催化对映选择性“水解”，并形成相应的对映体富集的烯丙醇。“水解”的程度在很大程度上取决于溶剂和硫代羧酸根离子。在外消旋的环己烯基乙酸酯和环庚烯基乙酸酯与KSAc的钯催化反应中观察到高选择性动力学拆分（KRs）。乙酸环己烯基酯的KR以选择性因子S = 72±19为特征，而乙酸环庚烯基酯的KR可提供ee≥99％ee的（R）-环庚烯基乙酸酯，收率48％和（See）的98％ee）-环庚烯基硫代乙酸酯，收率50％。外消旋环戊烯基乙酸酯与KSAc的钯催化反应显示出很强的“记忆效应”（ME），即两种对映异构体均以不同的对映选择性反应
• Pure enantiomers from retro-diels-alder processes
  作者：Marion Beckmann、Hinrich Hildebrandt、Ekkehard Winterfeldt

  DOI：10.1016/s0957-4166(00)86325-9

  日期：1990.1
• Iterative enolate Claisen rearrangements: versatile route to optically pure 2,7-nonadiene-5-carboxylic acids
  作者：John C. McKew、Mark J. Kurth

  DOI：10.1021/jo00069a019

  日期：1993.8

  A short, versatile, and diastereoselective method of preparing 2,7-nonadiene-5-carboxylic acids by an iterative enolate Claisen rearrangement procedure has been developed. Homochiral (E)- and (Z) secondary allylic alcohols 1-4, prepared from (S)-(-)-ethyl lactate, were esterified with acetic acid and enolized, and the resulting silyl ketene acetals were warmed to room temperature to effect [3,3]-sigmatropic rearrangement to 4-hexenoic acids 5-8. Esterification of these acids with alcohols 1-4 followed by a second enolate Claisen rearrangement delivered the targeted 2,7-nonadiene-5-carboxylic acids with high diastereoselectivity. This second [3,3]-sigmatropic rearrangement provides well-placed and potentially synthetically useful functionality and stereochemistry.