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syn-2,3-dimethyl-4-pentenoic acid

中文名称
——
中文别名
——
英文名称
syn-2,3-dimethyl-4-pentenoic acid
英文别名
(2S*,3R*)-2,3-Dimethylpent-4-enoic acid;syn-2,3-dimethylpent-4-enoic acid;2,3-dimethylpent-4-enoic acid;(2R*,3S*)-2,3-dimethylpent-4-enoic acid;(2S,3R)-2,3-dimethylpent-4-enoic acid
syn-2,3-dimethyl-4-pentenoic acid化学式
CAS
——
化学式
C7H12O2
mdl
——
分子量
128.171
InChiKey
NYXARVSETVGSTO-RITPCOANSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.7
  • 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:
    37.3
  • 氢给体数:
    1
  • 氢受体数:
    2

反应信息

点击查看最新优质反应信息

文献信息

  • Synthesis of γ,δ-Unsaturated Esters and Amides via Au(I)-Catalyzed Reactions of Aryl Ynol Ethers or Ynamides with Allylic Alcohols
    作者:Souta Misawa、Asaki Miyairi、Yoshihiro Oonishi、Yoshihiro Sato、Steven P. Nolan
    DOI:10.1055/a-1559-3020
    日期:2021.12
    to their inherent unique reactivity. Herein, we report Au(I)-catalyzed hydroalkoxylation/Claisen rearrangement cascade reactions of aryl ynol ethers and ynamides with allylic alcohols. At the first stage (hydroalkoxylation) of this cascade reaction, attack of allylic alcohols to aryl ynol ethers or ynamides occurs at the α-position of the polarized alkynes in a completely regioselective manner. Claisen
    炔醇醚和炔酰胺等极化炔烃因其固有的独特反应性而备受关注。在此,我们报告了 Au(I) 催化的芳基炔醇醚和炔酰胺与烯丙醇的加氢烷氧基化/克莱森重排级联反应。在该级联反应的第一阶段(加氢烷氧基化),烯丙醇对芳基炔醇醚或炔酰胺的攻击以完全区域选择性的方式发生在极化炔烃的 α 位。随后发生所得加合物的克莱森重排,分别得到 γ,δ-不饱和酯或酰胺。[Au(IPr)NTf2]催化剂对该反应最有效,反应在温和条件下进行(芳基炔醇醚:在THF中,60°C;在炔酰胺的情况下:在甲苯中,80° C) 以原子经济的方式。
  • An Examination of the Scope and Stereochemistry of the Ireland-Claisen Rearrangement of Boron Ketene Acetals
    作者:Curtis A. Seizert、Eric M. Ferreira
    DOI:10.1002/chem.201304384
    日期:2014.4.7
    The Ireland–Claisen rearrangement of boron ketene acetals is described. The boron ketene acetal intermediates are formed through a soft enolization that obviates the use of strong bases and the intermediacy of alkali metal enolates. Yields and diastereoselectivities of these rearrangements are very sensitive to the choice of boron reagent, even among those that have been shown to effect quantitative
    描述了爱尔兰-克莱森硼乙烯酮缩醛的重排。硼乙烯酮乙缩醛中间体是通过软化烯醇化而形成的,这种方法消除了强碱的使用和碱金属烯醇化物的中间性。这些重排的收率和非对映选择性对硼试剂的选择非常敏感,即使在那些已证明可从酯中定量形成硼乙烯酮缩醛的试剂中也是如此。对于所有具有高立体选择性的底物,重排均在室温下发生。与以前使用三氟甲磺酸硼的报告相比,使用市售的碘化硼试剂可提供更大的底物范围,可扩展至丙酸酯和芳基乙酸酯,以及先前描述的α-氧化酯。
  • An efficient method for hydrolysis of N-monosubstituted amides utilization of intramolecular NO acyl migration in hydroxypivalimides
    作者:Tetsuto Tsunoda、Osamu Sasaki、Osamu Takeuchi、Shô Itô
    DOI:10.1016/s0040-4020(01)86433-4
    日期:1991.1
    carboxamides has been developed. The method consists of two steps: the conversion to acetoxypivalimides (≥90% yield) and their mild alkaline hydrolysis (70∼90% yield). No epimerization at the α-position of the acyl group took place in the process. The amine part of the original amides can be recovered in good yield.
    已经开发了一种有效且通用的水解N-单取代羧酰胺的方法。该方法包括两个步骤:转化为乙酰氧基新戊酰亚胺(≥90%产率)和温和的碱水解(70-90%产率)。在该过程中在酰基的α-位没有发生差向异构。可以以高收率回收原始酰胺的胺部分。
  • Why do thioureas and squaramides slow down the Ireland–Claisen rearrangement?
    作者:Dominika Krištofíková、Juraj Filo、Mária Mečiarová、Radovan Šebesta
    DOI:10.3762/bjoc.15.290
    日期:——
    A range of chiral hydrogen-bond-donating organocatalysts was tested in the Ireland-Claisen rearrangement of silyl ketene acetals. None of these organocatalysts was able to impart any enantioselectivity on the rearrangements. Furthermore, these organocatalysts slowed down the Ireland-Claisen rearrangement in comparison to an uncatalyzed reaction. The catalyst-free reaction proceeded well in green solvents
    在甲硅烷基乙烯酮缩醛的爱尔兰-克莱森重排中测试了一系列手性给氢键的有机催化剂。这些有机催化剂均不能在重排上赋予任何对映选择性。此外,与未催化反应相比,这些有机催化剂减缓了爱尔兰-克莱森重排。在绿色溶剂中或没有任何溶剂的情况下,无催化剂的反应进展顺利。DFT计算表明,涉及供氢有机催化剂的反应的活化能垒较高,动力学实验表明,催化剂与起始甲硅烷基乙烯酮缩醛的结合力强于过渡结构,从而导致重排反应效率低下。
  • Lewis acid-catalyzed claisen rearrangement in the preparation of chiral products
    申请人:The Regents of the University of California
    公开号:US06359174B1
    公开(公告)日:2002-03-19
    A novel Claisen rearrangement reaction is provided. An allylic reactant such as an allylic amine, an allylic ether or an allylic thioether is reacted with an acid chloride in the presence of a Lewis acid catalyst composition composed of a Lewis acid and a base selected from the group consisting of tertiary amines and non-nitrogenous bases. The stereochemistry of the reaction product is readily controlled by the positioning and size of substituents on the allylic reactant. The reaction may be carried out on a solid support, i.e., on the surface of a substrate suitable for conducting solid phase chemical reactions.
    提供了一种新的Claisen重排反应。像烯丙胺、烯丙醚或烯丙硫醚等烯丙基反应物与酸氯化物在存在由Lewis酸和从三级胺和非氮碱组成的碱所选的Lewis酸催化剂组合的情况下发生反应。反应产物的立体化学可通过烯丙基反应物上取代基的位置和大小轻松控制。该反应可以在固体支持物上进行,即在适用于进行固相化学反应的基质表面上进行。
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