2-benzyl-4-pentenoic acid | 6540-96-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 苯丙酸
• 英文名称: 2-benzyl-4-pentenoic acid
• 英文别名: 2-allyl-3-benzenepropanoic acid；2-allyl-3-phenylpropanoic acid；2-allyl-3-phenylpropionic acid；2-benzylpent-4-enoic acid
• CAS: 6540-96-1
• 化学式: C₁₂H₁₄O₂
• 分子量: 190.242
• InChiKey: VDJGCNARLOCVIY-UHFFFAOYSA-N

物化性质

• 沸点：
  144-146 °C(Press: 1.7 Torr)
• 密度：
  1.066±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-benzyl-4-pentenoic acid 在 palladium on activated charcoal sodium chlorite 、 正丁基锂 、 disodium hydrogenphosphate 、 2-甲基-2-丁烯 、 草酰氯 、 氢气 、 臭氧 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 、 二氯甲烷 、 叔丁醇 为溶剂， 反应 7.42h， 生成 R-2-苄基琥珀酸
  参考文献：
  名称：

  Stereochemistry in enzyme inhibition: synthesis and evaluation of enantiomerically pure 2-benzyl-3-formylpropanoic acids as inhibitors of carboxypeptidase A

  摘要：

  Both enantiomers of 2-benzyl-3-formylpropanoic acid were synthesized in five steps starting with hydrocinnamic acid and each enantiomer assayed for inhibitory activity against carboxypeptidase A to find that the (R)-form is 674-fold more potent than its enantiomer. The finding that the (R)-form which belongs to the L-series is mostly responsible for the inhibitory activity accords with the explanation that the present inhibitor is a transition state analog inhibitor because, as such, its stereochemistry should belong to the same series as that of the substrate, i.e., the L-series. The gem-diol form of the inhibitor generated in situ mimics the transition state in the catalytic process.

  DOI：

  10.1016/s0957-4166(99)00421-8
• 作为产物：
  描述：

  N-(2-iodo-4-trifluoromethylphenyl)-3-phenylpropanamide 在 氢氧化钾 、 偶氮二异丁腈 作用下， 以 水 、 二甲基亚砜 、 苯 为溶剂， 反应 102.5h， 生成 2-benzyl-4-pentenoic acid
  参考文献：
  名称：

  Amide-based protecting/radical translocating (PRT) groups. Generation of radicals adjacent to carbonyls by 1,5-hydrogen transfer reactions of o-iodoanilides

  摘要：

  The o-iodoanilide group is shown to be broadly useful for the generation and subsequent reactions of radicals adjacent to carboxyl groups. The results indicate that this group is one of the best ''protecting/radical translocating'' (PRT) groups introduced to date. Beyond its good performance in radical translocation reactions, it is easy to introduce, serves as a reasonable protecting group both before and after the translocation, and (with appropriate modifications) is easy to remove.

  DOI：

  10.1016/s0040-4020(01)90466-1

文献信息

• Heterocyclic group transfer reactions with I(<scp>iii</scp>) <i>N</i>-HVI reagents: access to <i>N</i>-alkyl(heteroaryl)onium salts <i>via</i> olefin aminolactonization
  作者：Anthony F. Tierno、Jennifer C. Walters、Andres Vazquez-Lopez、Xiao Xiao、Sarah E. Wengryniuk

  DOI：10.1039/d1sc00187f

  日期：——

  Pyridinium and related N-alkyl(heteroaryl)onium salts are versatile synthetic intermediates in organic chemistry, with applications ranging from ring functionalizations to provide diverse piperidine scaffolds to their recent emergence as radical precursors in deaminative cross couplings. Despite their ever-expanding applications, methods for their synthesis have seen little innovation, continuing to

  吡啶鎓和相关的N-烷基（杂芳基）鎓盐是有机化学中的多功能合成中间体，其应用范围从环官能化以提供多种哌啶支架到最近作为脱氨基交叉偶联中的自由基前体出现。尽管它们的应用不断扩大，但其合成方法几乎没有创新，仍然依赖于有限的数十年历史的转化和有限的偶联伙伴子集。在此，我们利用（双）阳离子氮连接的 I( III ) 高价碘试剂或N -HVI 作为“杂环基团转移试剂”，通过氨基内酯化提供广泛的N -烷基（杂芳基）鎓盐链烯酸的合成，这是与烯烃直接生成这些盐的第一个例子。该反应在温和的条件下以优异的产率进行，并且能够掺入广泛的空间和电子多样化的芳香杂环。 N -HVI 试剂可以原位生成，通过简单的研磨分离产物，随后的衍生化证明了该平台用于以多样性为导向的六元氮杂环合成的能力。
• Study on the total synthesis of velbanamine: Chemoselective dioxygenation of alkenes with PIFA via a stop-and-flow strategy
  作者：Huili Liu、Kuan Zheng、Xiang Lu、Xiaoxia Wang、Ran Hong

  DOI：10.3762/bjoc.9.113

  日期：——

  5-hydroxymethyl-gamma-lactones were constructed after hydrolysis. This strategy also differentiates terminally substituted alkenes and constitutes a potentially novel synthetic approach for the efficient synthesis toward velbanamine.

  开发了一种“停止流动”策略，用于通过 PIFA 引发的环化对烯烃进行化学选择性双氧化。该方法针对仲二烯的去对称化反应，水解后构建了一系列取代的5-羟甲基-γ-内酯。该策略还区分了末端取代的烯烃，并构成了一种潜在的新颖合成方法，用于有效合成维巴纳胺。
• Intramolecular formal [4+2] cycloaddition of 3-ethoxycyclobutanones and alkenes
  作者：Jun-ichi Matsuo、Shun Sasaki、Takaya Hoshikawa、Hiroyuki Ishibashi

  DOI：10.1039/b919332d

  日期：——

  Intramolecular formal [4+2] cycloaddition between 3-ethoxycyclobutanones and a carbon-carbon double bond to the corresponding bicyclo[4.n.0]alkan-2-one derivatives proceeded effectively by using ethylaluminium dichloride.

  3-乙氧基环丁酮和碳-碳双键与相应的双环[4.n.0] alkan-2-one衍生物之间的分子内形式[4 + 2]环加成反应通过使用二氯化乙基铝有效地进行。
• Copper(II)-Catalyzed Alkene Aminosulfonylation with Sodium Sulfinates For the Synthesis of Sulfonylated Pyrrolidones
  作者：Wei-Hao Rao、Li-Li Jiang、Xiao-Meng Liu、Mei-Jun Chen、Fang-Yuan Chen、Xin Jiang、Jin-Xiao Zhao、Guo-Dong Zou、Yu-Qiang Zhou、Lin Tang

  DOI：10.1021/acs.orglett.9b00907

  日期：2019.4.19

  A copper-catalyzed direct aminosulfonylation of unactivated alkenes with sodium sulfinates for the efficient synthesis of sulfonylated pyrrolidones is described. This reaction features good functional group tolerance and wide substrate scope, providing an efficient and straightforward protocol to access this kind of pyrrolidones. Moreover, preliminary mechanistic investigations disclosed that a free-radical

  描述了铜的未活化烯烃与亚磺酸钠的铜催化的直接氨基磺酰化，用于有效合成磺酰化的吡咯烷酮。该反应具有良好的官能团耐受性和广泛的底物范围，提供了访问此类吡咯烷酮的有效而直接的方法。此外，初步的机械研究表明，在此过程中可能涉及自由基途径。
• NHC-Catalyzed Ring Expansion of Oxacycloalkane-2-carboxaldehydes: A Versatile Synthesis of Lactones
  作者：Li Wang、Karen Thai、Michel Gravel

  DOI：10.1021/ol8029005

  日期：2009.2.19

  Imidazolinium-derived carbenes catalyze the ring-expansion lactonization of oxacycloalkane-2-carboxaldehydes. A variety of functionalized five-, six-, and seven-membered lactones can be formed efficiently under mild reaction conditions. The success of this new method for the construction of lactones is highly influenced by the electronic nature of the carbene catalyst.

  咪唑啉鎓衍生的卡宾催化氧杂环烷-2-甲醛的扩环内酯化反应。在温和的反应条件下，可以有效地形成各种功能化的五元，六元和七元内酯。卡宾催化剂的电子性质极大地影响了这种构建内酯的新方法的成功。