2-苄基-1,3,4-噁二唑 | 13148-63-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2-苄基-1,3,4-噁二唑
• 中文别名: 2-苄基-1,3,4-恶二唑
• 英文名称: 2-benzyl-1,3,4-oxadiazole
• 英文别名: 2-benzyl-[1,3,4]oxadiazole；2-benzyl[1,3,4]oxadiazole；2-Benzyl-<1,3,4>oxadiazol；2-Benzyl-1,3,4-oxadiazol
• CAS: 13148-63-5
• 化学式: C₉H₈N₂O
• mdl: MFCD09694522
• 分子量: 160.175
• InChiKey: QBXCAUWVKMECDN-UHFFFAOYSA-N

物化性质

• 沸点：
  286℃
• 密度：
  1.160
• 闪点：
  129℃

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.111
• 拓扑面积：
  38.9
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 海关编码：
  2934999090

反应信息

• 作为反应物：
  描述：

  2-苄基-1,3,4-噁二唑 在 sodium t-butanolate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以87%的产率得到苯乙腈
  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：

  苯乙酸甲酯 在 对甲苯磺酸 、 一水合肼 作用下， 反应 28.0h， 生成 2-苄基-1,3,4-噁二唑
  参考文献：
  名称：

  Development of Orally Active Nonpeptidic Inhibitors of Human Neutrophil Elastase

  摘要：

  5-Amino-2-phenylpyrimidin-6-ones, some of their desamino derivatives, and miscellaneous derivatives were synthesized and biologically evaluated on both in vitro activity and oral activity in an acute hemorrhagic assay. These compounds contained an alpha -keto-1,3,4-oxadiazole moiety to bind covalently to the Ser-195 hydroxy group of human neutrophil elastase (HNE). Among those tested, compounds 11a-c,e,i-1(F), 11d,e,k(H), ald,e,k(F), and ald,e(H) showed a good oral profile. RS-Mixture 3(H) was selected for clinical evaluation based on its oral potency, duration of action, enzyme selectivity, safety profile, and ease of synthesis. Structure-activity relationships (SARs) are discussed.

  DOI：

  10.1021/jm000410y

文献信息

• Greener and rapid access to bio-active heterocycles: one-pot solvent-free synthesis of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles
  作者：Vivek Polshettiwar、Rajender S. Varma

  DOI：10.1016/j.tetlet.2007.11.165

  日期：2008.1

  A novel one-pot solvent-free synthesis of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles by condensation of acid hydrazide and triethyl orthoalkanates under microwave irradiations is reported. This green protocol was catalyzed efficiently by solid supported Nafion®NR50 and phosphorus pentasulfide in alumina (P4S10/Al2O3) with excellent yields.

  报道了在微波辐射下通过酰肼与原烷基三乙基酯的缩合反应得到的一种新颖的无锅无溶剂合成1,3,4-恶二唑和1,3,4-噻二唑的方法。此绿色协议是有效地由固体负载的Nafion催化® NR50和五硫化二磷在氧化铝（P 4小号10 /的Al 2 ö 3具有优良的产率）。
• POLYCYCLIC COMPOUNDS AS LYSOPHOSPHATIDIC ACID RECEPTOR ANTAGONISTS
  申请人：CLARK Ryan

  公开号：US20110082164A1

  公开（公告）日：2011-04-07

  Described herein are compounds that are antagonists of lysophosphatidic receptor(s). Also described are pharmaceutical compositions and medicaments that include the compounds described herein, as well as methods of using such antagonists, alone and in combination with other compounds, for treating LPA-dependent or LPA-mediated conditions or diseases.

  本文描述了一些作为赖氨酸磷脂酸受体拮抗剂的化合物。还描述了包括本文描述的化合物的药物组合物和药物，以及使用这些拮抗剂的方法，单独或与其他化合物结合，用于治疗依赖或介导赖氨酸磷脂酸的疾病或病症。
• The synthesis of bis(1,3,4-oxadiazol-2-yl-phenylmethyl) sulfides and other related 1,3,4-oxadiazoles from 1,1′-diphenylthiodiacetic acid dihydrazide and triethyl orthoesters
  作者：Agnieszka Kudelko

  DOI：10.1016/j.tet.2011.09.018

  日期：2011.11

  1′-diphenylthiodiacetic acid dihydrazide and triethyl orthoesters in the presence of catalytic amount of glacial acetic acid resulted in the formation of three heterocyclic products: the appropriate bis(1,3,4-oxadiazol-2-yl-phenylmethyl) sulfides, 2-benzyl-1,3,4-oxadiazoles and 2-benzoyl-1,3,4-oxadiazoles. The presence of the latter two compounds is connected with carbon–sulfur fission in the molecule

  在催化量的冰醋酸存在下，对称的1,1'-二苯基硫代二乙酸二酰肼与三乙基原酸酯的反应导致形成三种杂环产物：适当的双（1,3,4-恶二唑-2-基-苯甲基）硫化物，2-苄基-1,3,4-恶二唑和2-苯甲酰基-1,3,4-恶二唑。后两种化合物的存在与起始酰肼分子中的碳硫裂变有关。通过由苯基乙酸酰肼和2-羟甲基-1,3,4-恶二唑衍生物并行合成模型1,3,4-恶二唑，证实了未预期的裂变产物的身份。
• Domino Carbopalladation/CH Functionalization Sequence: An Expedient Synthesis of Bis-Heteroaryls through Transient Alkyl/Vinyl-Palladium Species Capture
  作者：Upendra K. Sharma、Nandini Sharma、Yogesh Kumar、Brajendra K. Singh、Erik V. Van der Eycken

  DOI：10.1002/chem.201503708

  日期：2016.1.11

  A microwave‐assisted highly efficient intermolecular domino carbopalladation/CH functionalization sequence has been developed to access bis‐heteroaryl frameworks in a single operation. The reaction involves carbopalladation of the halogenated acrylamides or phenylpropiolamides by the Pd(0) catalysis, followed by the direct (hetero)arylation to give products with good to excellent yields. The synthetic

  微波辅助高效分子间多米诺carbopalladation / C  ħ官能序列已经发展到访问双-杂芳基的框架在单次操作。该反应涉及通过Pd（0）催化使卤化丙烯酰胺或苯基丙酰胺的碳弹法反应，然后进行直接（杂）芳基化反应，从而获得具有良好收率或优异收率的产品。该方法的综合用途也扩展到了Ugi-加合物作为起始原料的应用。
• Palladium-Catalyzed Enantioselective Domino Heck/Intermolecular C–H Bond Functionalization: Development and Application to the Synthesis of (+)-Esermethole
  作者：Wangqing Kong、Qian Wang、Jieping Zhu

  DOI：10.1021/jacs.5b11625

  日期：2015.12.30

  Intramolecular asymmetric carbopalladation of N-aryl acrylamides followed by intermolecular trapping of the resulting σ-C(sp(3))-Pd complex by azoles afforded 3,3-disubstituted oxindoles in good yields with excellent enantioselectivities. Two C-C bonds were created with concurrent formation of an all-carbon quaternary stereocenter. Oxadiazole substituted oxindoles were subsequently converted to pyrroloindolines

  N-芳基丙烯酰胺的分子内不对称碳钯化，然后用唑类分子间捕获所得的 σ-C(sp(3))-Pd 复合物，以良好的收率和出色的对映选择性提供了 3,3-二取代的羟吲哚。创建了两个 CC 键，同时形成了一个全碳四元立体中心。恶二唑取代的羟吲哚随后通过前所未有的还原环化方案转化为吡咯并二氢吲哚。(+)-esermethole 的对映选择性合成说明了这种化学的效用。