2-(naphthalen-2-yl)-1,3,4-oxadiazole | 1236115-17-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 2-(naphthalen-2-yl)-1,3,4-oxadiazole
• 英文别名: 2-(2-Naphthyl)-1,3,4-oxadiazole；2-naphthalen-2-yl-1,3,4-oxadiazole
• CAS: 1236115-17-5
• 化学式: C₁₂H₈N₂O
• 分子量: 196.208
• InChiKey: CCAIIZWGSQYMEJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  38.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(naphthalen-2-yl)-1,3,4-oxadiazole 在 sodium t-butanolate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 以84%的产率得到2-萘甲腈
  参考文献：
  名称：

  A Base-Induced Ring-Opening Process of 2-Substituted-1,3,4-Oxadiazoles for the Generation of Nitriles at Room Temperature

  摘要：

  A novel base-catalysed 1,3,4-oxadiazole fragmentation for the synthesis of nitriles at room temperature has been developed. This reaction is performed under transition-metal-free conditions, and provides a new ring cleavage reaction of 1,3,4-oxadiazoles in organic synthesis.

  DOI：

  10.3184/174751914x14007780679741
• 作为产物：
  描述：

  (异氰亚氨基)三苯基膦 、 2-萘甲酸 以 二氯甲烷 为溶剂， 反应 0.27h， 以83%的产率得到2-(naphthalen-2-yl)-1,3,4-oxadiazole
  参考文献：
  名称：

  Novel, fast and efficient one-pot sonochemical synthesis of 2-aryl-1,3,4-oxadiazoles

  摘要：

  Ultrasound promoted synthesis of 2-aryl-1,3,4-oxadiazoles at ambient temperature is reported. The remarkable features of the new procedure are shorter reaction time, excellent yields, cleaner reaction profile and simple experimental and workup procedure. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ultsonch.2013.06.009

文献信息

• Iodine-Mediated Domino Oxidative Cyclization: One-Pot Synthesis of 1,3,4-Oxadiazoles via Oxidative Cleavage of C(sp²)–H or C(sp)–H Bond
  作者：Yuxing Fan、Yongqin He、Xingxing Liu、Ting Hu、Haojie Ma、Xiaodong Yang、Xinliang Luo、Guosheng Huang

  DOI：10.1021/acs.joc.6b01135

  日期：2016.8.5

  An I2-promoted, metal-free domino protocol for one-pot synthesis of 1,3,4-oxadiazoles has been developed via oxidative cleavage of C(sp2)–H or C(sp)–H bonds, followed by cyclization and deacylation. In this reaction, the use of K2CO3 as a base is found to be an essential factor in the cyclization and the C–C bond cleavage. This procedure proceeded smoothly in moderate to high yields with good functional

  通过氧化裂解C（sp 2）–H或C（sp）–H键，然后环化，已开发出I 2促进的无金属多米诺协议，用于一锅合成1,3,4-恶二唑。和脱酰作用。在该反应中，发现使用K 2 CO 3作为碱是环化和C–C键断裂的必要因素。该过程以中等至高收率顺利进行，并具有良好的官能团相容性。
• Direct Annulation of Hydrazides to 1,3,4-Oxadiazoles via Oxidative C(CO)–C(Methyl) Bond Cleavage of Methyl Ketones
  作者：Qinghe Gao、Shan Liu、Xia Wu、Jingjing Zhang、Anxin Wu

  DOI：10.1021/acs.orglett.5b01241

  日期：2015.6.19

  strategy for the synthesis of 1,3,4-oxadiazoles was established through direct annulation of hydrazides with methyl ketones. It was found that the use of K2CO3 as a base achieves an unexpected and highly efficient C–C bond cleavage. This reaction is proposed to go through oxidative cleavage of Csp3–H bonds, followed by cyclization and deacylation.

  通过将酰肼与甲基酮直接环合，建立了一种合成1,3,4-恶二唑的新策略。发现使用K 2 CO 3作为碱可以实现意想不到且高效的C–C键裂解。建议该反应通过C sp 3 -H键的氧化裂解，然后环化和脱酰基。
• DMF as Methine Source: Copper‐Catalyzed Direct Annulation of Hydrazides to 1,3,4‐Oxadiazoles
  作者：Shoucai Wang、Kai Wang、Xiangfei Kong、Shuhua Zhang、Guangbin Jiang、Fanghua Ji

  DOI：10.1002/adsc.201900395

  日期：2019.9.3

  unprecedented Cu‐catalyzed direct annulation of hydrazides with N,N‐dimethylformamide (DMF) was developed, providing an efficient synthesis of valuable 1,3,4‐oxadiazoles. This process features the short reaction time and can be safely conducted on gram scale. The reaction also facilitated the convenient synthesis of 1,3,4‐oxadiazole‐2(3H)‐ones. Moreover, the mechanistic studies suggest that the source of CH is

  开发了前所未有的Cu催化的N，N-二甲基甲酰胺（DMF）酰肼直接环化反应，可有效合成有价值的1,3,4-恶二唑。该过程的反应时间短，可以安全地以克为单位进行。该反应还促进了1,3,4-恶二唑-2（3 H）-one的便捷合成。此外，机理研究表明，CH的来源是DMF的N-甲基。
• Pd- and Cu-Catalyzed Stereo- and Regiocontrolled Decarboxylative/CH Fluoroalkenylation of Heteroarenes
  作者：Kevin Rousée、Cédric Schneider、Samuel Couve-Bonnaire、Xavier Pannecoucke、Vincent Levacher、Christophe Hoarau

  DOI：10.1002/chem.201405119

  日期：2014.11.10

  Pd/Cu‐catalyzed decarboxylative/direct CH alkenylations of heteroarenes with α‐fluoroacrylic acid is reported. This method offers step‐economical and stereocontrolled access to valuable heteroarylated monofluoroalkenes as both Z and E isomers, which are known to be useful in the synthesis of fluorinated biomolecules.

  报道了杂芳烃与α-氟丙烯酸的Pd / Cu催化的脱羧/直接CH烯基化反应。该方法可经济，立体地控制宝贵的杂芳基单氟烯烃（Z和E异构体），已知可用于合成氟化生物分子。
• Palladium-Catalyzed Domino Allenamide Carbopalladation/Direct C–H Allylation of Heteroarenes: Synthesis of Primprinine and Papaverine Analogues
  作者：Jonathan Hédouin、Cédric Schneider、Isabelle Gillaizeau、Christophe Hoarau

  DOI：10.1021/acs.orglett.8b02365

  日期：2018.10.5

  Palladium-catalyzed intramolecular carbopalladation onto allenamides completed by direct C–H allylation of heterocycles is studied. The domino construction/heteroarylation of isoquinolone process is first achieved. A general three-step one-pot strategy, involving in situ generation of allenamide, π-allyl-Pd complex generation, and interception with heteroarenes, has been subsequently set up. This methodology

  研究了通过杂环的直接C–H烯丙基化反应完成的钯催化的分子内碳钯共沉淀到烯丙基酰胺上的过程。首先实现异喹诺酮过程的多米诺骨结构/杂芳基化。随后建立了一种通用的三步一锅策略，包括原位生成烯丙酰胺，生成π-烯丙基-Pd复合物以及用杂芳烃拦截。该方法已扩展到吲哚，二氢喹啉，异喹啉（on）es和中等大小的氮杂环的构建/杂芳基化，已知它们是具有药学意义的关键挑战性结构基序。