5-(naphthalen-2-yl)hex-5-enoic acid | 1258204-02-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 5-(naphthalen-2-yl)hex-5-enoic acid
• 英文别名: 5-Naphthalen-2-ylhex-5-enoic acid；5-naphthalen-2-ylhex-5-enoic acid
• CAS: 1258204-02-2
• 化学式: C₁₆H₁₆O₂
• 分子量: 240.302
• InChiKey: UJOOHLVVZJIOIX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.19
• 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：

  5-(naphthalen-2-yl)hex-5-enoic acid 在 N-溴酞亚胺 、 S-[(R)-[(2S)-1-methylpyrrolidin-2-yl]-naphthalen-1-ylmethyl] N-(4-ethoxyphenyl)carbamothioate 作用下， 以 间二甲苯 、 甲苯 为溶剂， 以97%的产率得到(S)-6-(bromomethyl)-6-phenyltetrahydro-2H-pyran-2-one
  参考文献：
  名称：

  使用S-烷基硫代氨基甲酸酯催化剂的对映选择性溴化反应

  摘要：

  苹果永远不会离树太远：通过涉及相应的O-烷基硫代氨基甲酸酯的Newman-Kwart重排的合成序列，以高收率制备了S-烷基硫代氨基甲酸酯1（参见方案，NBP = N-溴邻苯二甲酰亚胺）。化合物1用于催化溴化内酯化，从而以优异的收率和对映选择性提供了对映体富集的δ-内酯。

  DOI：

  10.1002/anie.201202079
• 作为产物：
  描述：

  5-(2-萘基)-5-氧代戊酸 在 lithium hydroxide monohydrate 、 水 、 乙酰氯 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 生成 5-(naphthalen-2-yl)hex-5-enoic acid
  参考文献：
  名称：

  Asymmetric Iodolactonization Utilizing Chiral Squaramides

  摘要：

  Asymmetric iodolactonization of gamma- and delta-unsaturated carboxylic acids has been explored in the presence of six different chiral organocatalysts 5-8. The catalyst 6b was found to facilitate the cyclization of 5-arylhex-5-enoic acids 1 to the corresponding iodolactones 2 with up to 96% ee. By this protocol, unsaturated carboxylic acids are converted enantioselectively to synthetically useful delta-lactones in high yields using commercially available NIS. Apparently, both hydrogen bonding and aryl/aryl interactions are important for efficient stereodifferentiation.

  DOI：

  10.1021/ol302798g

文献信息

• Enantioselective Organocatalyzed Bromolactonizations: Applications in Natural Product Synthesis
  作者：Marius Aursnes、Jørn E. Tungen、Trond V. Hansen

  DOI：10.1021/acs.joc.6b01375

  日期：2016.9.16

  The best catalyst enabled the cyclization of several 5-arylhex-5-enoic acids into the corresponding bromolactones with up to 96% ee and in high to excellent chemical yields. The reported catalysts are prepared in a straightforward manner in two steps from dimethyl squarate. The utility of the developed protocol was demonstrated in highly enantioselective syntheses of the sesquiterpenoids (−)-gossoronol

  在10种手性方酰胺氢键键合有机催化剂的存在下，对δ-不饱和羧酸的不对称溴化反应进行了研究。最好的催化剂可以使几种5-芳基己基-5-烯酸环化成相应的溴内酯，其ee最高可达96％，化学产率高至优异。所报道的催化剂是由直方的，由二甲基二甲酸酯分两步制备的。倍半萜类（-）-棉酚和（-）-boivinianin B的高度对映体选择性合成证明了开发方案的实用性。两种天然产物均以≥99％的对映体过量获得。
• Asymmetric Bromolactonization Catalyzed by a C3-Symmetric Chiral Trisimidazoline
  作者：Kenichi Murai、Tomoyo Matsushita、Akira Nakamura、Shunsuke Fukushima、Masato Shimura、Hiromichi Fujioka

  DOI：10.1002/anie.201005409

  日期：2010.11.22

  A productive alliance: In an enantioselective organocatalytic bromolactonization of 5‐substituted hex‐5‐enoic acids (see scheme), it appears that the formation of an ion pair through interaction of the trisimidazoline catalyst 1 with the substrate both creates a chiral environment and promotes the cyclization by activating the carboxylic acid. DBDMH=1,3‐dibromo‐5,5‐dimethylhydantoin.

  一个有效的联盟：在5个取代的6-5个烯酸的对映选择性有机催化溴化内酰胺中（参见方案），似乎通过三咪唑啉催化剂1与底物的相互作用形成离子对，既创造了手性环境，又促进了通过活化羧酸环化。DBDMH = 1,3-二溴-5,5-二甲基乙内酰脲。
• Achiral Counterion Control of Enantioselectivity in a Brønsted Acid-Catalyzed Iodolactonization
  作者：Mark C. Dobish、Jeffrey N. Johnston

  DOI：10.1021/ja301858r

  日期：2012.4.11

  Highly enantioselective halolactonizations have been developed that employ a chiral proton catalyst-N-iodosuccinimide (NIS) reagent system in which the Brønsted acid is used at catalyst loadings as low as 1 mol %. An approach that modulates the achiral counterion (equimolar to the neutral chiral ligand-proton complex present at low catalyst loadings) to optimize the enantioselection is documented for

  已经开发出高度对映选择性卤内酯化反应，它采用手性质子催化剂-N-碘代琥珀酰亚胺 (NIS) 试剂系统，其中布朗斯台德酸以低至 1 mol% 的催化剂负载量使用。在该转化中首次记录了一种调节非手性抗衡离子（与低催化剂负载下存在的中性手性配体-质子复合物等摩尔）以优化对映体选择的方法。通过这种方式，使用市售 NIS 将不饱和羧酸以高产率（高达 98% ee）转化为 γ-内酯。
• Organoselenium Accelerated Bromolactonization Reaction
  作者：Jørn E. Tungen、Renate Kristianslund、Anders Vik、Trond V. Hansen

  DOI：10.1021/acs.joc.9b01294

  日期：2019.9.20

  A highly efficient and regioselective bromolactonization protocol is reported. The quantitative formation of synthetically versatile bromolactones occurs in the presence of only 0.1 mol % of an organoselenium compound, coined DECAD herein, within 90 min. DECAD is conveniently prepared on multigram scale from cheap racemic camphor. The presented protocol was easy to scale up and performed equally well

  据报道，一种高效且区域选择性的溴化内酯化方案。合成通用的溴内酯的定量形成是在90分钟内，仅存在0.1 mol％的有机硒化合物（在本文中称为DECAD）的情况下发生的。DECAD是从便宜的外消旋樟脑以克为单位方便地制备的。所提出的协议易于扩展，并且在克规模上表现同样出色。对该机理的研究表明，DECAD原位形成了硒烯。
• Tertiary Aminourea-Catalyzed Enantioselective Iodolactonization
  作者：Gemma E. Veitch、Eric N. Jacobsen

  DOI：10.1002/anie.201003681

  日期：——

  Binding the anion: A highly enantioselective iodolactonization of 5‐hexenoic acids has been achieved using a tertiary aminourea‐catalyst (see scheme). The use of catalytic iodine in this process is critical to enhancing both the reactivity and enantioselectivity of the stoichiometric I+ source. The mechanism is proposed to involve binding of an iodonium imidate intermediate by the H‐bond donor catalyst

  结合阴离子：使用叔氨基脲催化剂实现了 5-己烯酸的高度对映选择性碘内酯化（参见方案）。在该过程中使用催化碘对于提高化学计量 I +源的反应性和对映选择性至关重要。该机制被认为涉及通过氢键供体催化剂结合亚胺酸碘鎓中间体。