(Z)-1,3-diphenylprop-2-yn-1-one O-methyl oxime | 870127-38-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: (Z)-1,3-diphenylprop-2-yn-1-one O-methyl oxime
• 英文别名: (Z)-1,3-diphenylprop-2-yn-1-one O-methyloxime；1,3-diphenylprop-2-yn-1-one O-methyloxime；(Z)-N-methoxy-1,3-diphenylprop-2-yn-1-imine
• CAS: 870127-38-1
• 化学式: C₁₆H₁₃NO
• 分子量: 235.285
• InChiKey: CSFOQCFJJWFFQQ-WUKNDPDISA-N

物化性质

• 熔点：
  40-42 °C
• 沸点：
  350.1±25.0 °C(Predicted)
• 密度：
  0.96±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  21.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (Z)-1,3-diphenylprop-2-yn-1-one O-methyl oxime 在 iron(III) chloride 、 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 1.66h， 生成 (3,5-diphenylisoxazol-4-yl)diphenylmethanol
  参考文献：
  名称：

  Iron(III) Chloride/Diorganyl Diselenides: A Tool for Intramolecular Cyclization of Alkynone O-Methyloximes

  摘要：

  This report describes the synthesis of 4-organoselenylisoxazoles via FeCl3/RSeSeR-mediated intramolecular cyclization of allcynone O-methyloximes. The optimized conditions allowed the cyclization to proceed at room temperature under ambient atmosphere, and the reaction requires a short time to be completed. The reaction conditions tolerated neutral, electron-donating and electron-withdrawing groups present in both substrates, alkynone O-methyloximes and diorganyl diselenides. Treatment of 4-organoselenylisoxazoles with n-butyllithium, followed by trapping with electrophiles, furnished the functionalized isoxazoles in good yields. The obtained products also proved to be suitable substrates for the preparation of 4-bromoisoxazoles via Br/Se exchange reaction.

  DOI：

  10.1021/jo302770g
• 作为产物：
  描述：

  N-甲氧基苯甲酰胺 在 双(乙腈)氯化钯(II) 、 sodium hydride 、 三乙胺 、 三苯基膦 、 sodium iodide 作用下， 以 环丁砜 、 N,N-二甲基乙酰胺 、 mineral oil 为溶剂， 反应 29.5h， 生成 (Z)-1,3-diphenylprop-2-yn-1-one O-methyl oxime
  参考文献：
  名称：

  N-烷氧基亚氨基碘化物和溴化物的立体特异性铃木，Sonogashira和Negishi偶联反应

  摘要：

  描述了通过N-烷氧基酰亚胺基碘化物的Suzuki偶联合成二芳基肟醚的单一几何异构体的高产立体定向途径。该反应在完全保留酰亚胺基卤化物几何形状的情况下发生，从而给出二芳基肟醚的单一E-或Z-异构体。还已经开发了N-烷氧基酰亚胺基碘化物和溴化物与各种各样的末端炔烃的Sonogashira偶联，以提供芳基炔基肟肟醚的单一几何异构体。其中一些反应是在无铜条件下进行的。介绍了N-烷氧基亚氨基卤化物的Negishi偶联。该Ë和ž X射线晶体学证实了九种铃木偶联产物和两种Sonogashira偶联产物的构型。

  DOI：

  10.1021/jo400179u

文献信息

• Synthesis of Trisubstituted Isoxazoles by Palladium(II)-Catalyzed Cascade Cyclization–Alkenylation of 2-Alkyn-1-one <i>O</i>-Methyl Oximes
  作者：Zhigang She、Dongyue Niu、Lei Chen、Maria A. Gunawan、Xhesika Shanja、William H. Hersh、Yu Chen

  DOI：10.1021/jo300090k

  日期：2012.4.6

  palladium-catalyzed, cascade 5-endo-dig cyclization–alkenylation synthesis of isoxazoles has been developed. The addition of 1 equiv of n-Bu4NBr significantly increases the yield of the desired 4-alkenyl-3,4,5-trisubstituted isoxazoles. A variety of trisubstituted isoxazoles are prepared in moderate to excellent yields. One example of the synthesis of a naphthoisoxazole is reported by a cascade cyclization–alkenylation-Heck

  已经开发了钯催化的异恶唑的级联5-内挖式环化-烯基化合成。加入1当量的n -Bu 4 NBr显着增加了所需的4-烯基-3,4,5-三取代异恶唑的产率。以中等至优异的产率制备了多种三取代的异恶唑。通过级联环化-烯基化-Heck反应报道了萘异恶唑合成的一个例子。
• Palladium-Catalyzed Cascade Annulation/Allylation of Alkynyl Oxime Ethers with Allyl Halides: Rapid Access to Fully Substituted Isoxazoles
  作者：Can Li、Jianxiao Li、Fei Zhou、Chaosheng Li、Wanqing Wu

  DOI：10.1021/acs.joc.9b01593

  日期：2019.9.20

  A novel and efficient approach for the synthesis of functionalized isoxazoles via palladium-catalyzed cascade annulation/allylation of alkynyl oxime ethers with allyl halides has been established. The present protocol exhibits mild reaction conditions, good functional group compatibility, and convenient operation. Moreover, scalability was performed and further decoration of the isoxazole product was

  已经建立了通过钯催化的炔肟肟醚与烯丙基卤化物的级联环化/烯丙基化反应合成功能化异恶唑的新颖有效方法。本协议显示温和的反应条件，良好的官能团兼容性和方便的操作。此外，进行了可扩展性并且实现了对异恶唑产物的进一步装饰。
• The Synthesis of Highly Substituted Isoxazoles by Electrophilic Cyclization:  An Efficient Synthesis of Valdecoxib
  作者：Jesse P. Waldo、Richard C. Larock

  DOI：10.1021/jo701942e

  日期：2007.12.1

  A large number of functionally substituted 2-alkyn-1-one O-methyl oximes have been cyclized under mild reaction conditions in the presence of ICl to give the corresponding 4-iodoisoxazoles in moderate to excellent yields. The resulting 4-iodoisoxazoles undergo various palladium-catalyzed reactions to yield 3,4,5-trisubstituted isoxazoles, including valdecoxib.

  大量官能取代的 2-alkyn-1-one O-甲基肟在温和的反应条件下在 ICl 存在下环化，以中等至极好的收率得到相应的 4-碘异恶唑。所得的 4-碘异恶唑经过各种钯催化反应生成 3,4,5-三取代的异恶唑，包括伐地考昔。
• Multi-Step Synthesis by Using Modular Flow Reactors: The Preparation of YneOnes and Their Use in Heterocycle Synthesis
  作者：Ian R. Baxendale、Søren C. Schou、Jörg Sedelmeier、Steven V. Ley

  DOI：10.1002/chem.200902906

  日期：2010.1.4

  Multi‐step in flow: The palladium‐catalysed acylation of terminal alkynes for the synthesis of yneones as well as their further transformation to various heterocycles in a continuous‐flow mode is presented. Furthermore, an extension of the simple flow configuration that allows for easy batch splitting and the generation of a heterocyclic library is described (see scheme).

  多步骤中流动：末端炔烃的为炔的合成中钯催化酰化那些以及它们进一步转化为各种杂环在连续流动模式被呈现。此外，描述了简单流配置的扩展，该扩展允许简单的批拆分和杂环库的生成（请参阅方案）。
• Complementary regioselective synthesis of 3,5-disubstituted isoxazoles from ynones
  作者：Xiaochen Liu、Dongsub Hong、Zhigang She、William H. Hersh、Barney Yoo、Yu Chen

  DOI：10.1016/j.tet.2018.09.043

  日期：2018.11

  dehydration. The two routes are not only both highly regioselective, but also complementary to each other as a pair of regioisomeric 3,5-disubstituted isoxazoles are readily prepared from one single ynone substrate. The efficiency of the two routes are further evaluated and demonstrated in the synthesis of three representative 3,5-disubstituted isoxazoles.

  报道了从炔酮向3，5-二取代异恶唑的两种区域选择性合成路线。一种途径是通过首先将炔酮转化为炔酮O-甲基肟，然后进行钯催化的分子内环化而发生的。另一个涉及通过炔酮和羟胺之间的环缩合形成5-羟基-4,5-二氢异恶唑，然后进行酸介导的脱水。这两种途径不仅具有高度的区域选择性，而且彼此互补，因为可以很容易地从一个单一的炔酮底物制备一对区域异构的3,5-二取代的异恶唑。进一步评估了这两种途径的效率，并在三种代表性的3,5-二取代的异恶唑的合成中得到了证明。