2-(furan-2-yl)-5-methyl-1,3-benzoxazole

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶唑类
• 英文名称: 2-(furan-2-yl)-5-methyl-1,3-benzoxazole
• 英文别名: 2-(furan-2-yl)-5-methylbenzo[d]oxazole；5-methyl-2-(2-furyl)benzoxazole
• 化学式: C₁₂H₉NO₂
• 分子量: 199.209
• InChiKey: MXIKTLQNGRXWBZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  39.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(furan-2-yl)-5-methyl-1,3-benzoxazole 在 N-溴代丁二酰亚胺(NBS) 、 过氧化苯甲酰 作用下， 以 四氯化碳 为溶剂， 反应 3.5h， 以70%的产率得到5-(bromomethyl)-2-(furan-2-yl)-1,3-benzoxazole
  参考文献：
  名称：

  Design, synthesis and evaluation of 2-aryl benzoxazoles as promising hit for the A_2Areceptor

  摘要：

  The development of adenosine A_2A receptor antagonists has received much interest in recent years for the treatment of neurodegenerative diseases. Based on docking studies, a new series of 2-arylbenzoxazoles has been identified as potential A_2AR antagonists. Structure-affinity relationship was investigated in position 2, 5 and 6 of the benzoxazole heterocycle leading to compounds with a micromolar affinity towards the A_2A receptor. Compound F1, with an affinity of 1 μm, presented good absorption, distribution, metabolism and excretion properties with an excellent aqueous solubility (184 μm) without being cytotoxic at 100 μm. This compound, along with low-molecular weight compound D1 (K_i = 10 μm), can be easily modulated and thus considered as relevant starting points for further hit-to-lead optimisation.

  DOI：

  10.1080/14756366.2017.1334648
• 作为产物：
  描述：

  N-(2-hydroxy-5-methylphenyl)furan-2-carboxamide 在 对甲苯磺酸 作用下， 以 甲苯 为溶剂， 反应 17.0h， 以82%的产率得到2-(furan-2-yl)-5-methyl-1,3-benzoxazole
  参考文献：
  名称：

  Design, synthesis and evaluation of 2-aryl benzoxazoles as promising hit for the A_2Areceptor

  摘要：

  The development of adenosine A_2A receptor antagonists has received much interest in recent years for the treatment of neurodegenerative diseases. Based on docking studies, a new series of 2-arylbenzoxazoles has been identified as potential A_2AR antagonists. Structure-affinity relationship was investigated in position 2, 5 and 6 of the benzoxazole heterocycle leading to compounds with a micromolar affinity towards the A_2A receptor. Compound F1, with an affinity of 1 μm, presented good absorption, distribution, metabolism and excretion properties with an excellent aqueous solubility (184 μm) without being cytotoxic at 100 μm. This compound, along with low-molecular weight compound D1 (K_i = 10 μm), can be easily modulated and thus considered as relevant starting points for further hit-to-lead optimisation.

  DOI：

  10.1080/14756366.2017.1334648

文献信息

• N-Heterocyclic Carbene (NHC)-Catalyzed One-Pot Aerobic Oxidative Synthesis of 2-Substituted Benzo[d]oxazoles, Benzo[d]thiazoles and 1,2-Disubstituted Benzo[d]imidazoles
  作者：Xiu-Feng Hou、Quan Zhou、Shu Liu、Ming Ma、He-Zhen Cui、Xi Hong、Shuang Huang、Jing-Fan Zhang

  DOI：10.1055/s-0036-1591524

  日期：2018.3

  aerobic oxidative synthesis of 2-arylbenzo[d]oxazoles, 2-substituted benzo[d]thiazoles, and 1,2-disubstituted benzo[d]imidazoles. N-Heterocyclic carbene (NHC), generated in situ from easily available N-heterocyclic imidazolium salt with air as terminal oxidant, has successfully been utilized as a cheap and efficient catalyst for one-pot aerobic oxidative synthesis of 2-arylbenzo[d]oxazoles, 2-substituted

  摘要 N-杂环卡宾（NHC）是由易获得的N-杂环咪唑盐以空气为末端氧化剂原位生成的，已成功地用作便宜且有效的一锅好氧氧化合成2-芳基苯并[ d ]恶唑的催化剂，2-取代的苯并[ d ]噻唑和1,2-二取代的苯并[ d ]咪唑。 N-杂环卡宾（NHC）是由易获得的N-杂环咪唑盐以空气为末端氧化剂原位生成的，已成功地用作便宜且有效的一锅好氧氧化合成2-芳基苯并[ d ]恶唑的催化剂，2-取代的苯并[ d ]噻唑和1,2-二取代的苯并[ d ]咪唑。
• Synthesis of <i>o</i>-Alkenylated 2-Arylbenzoxazoles via Rh-Catalyzed Oxidative Olefination of 2-Arylbenzoxazoles: Scope Investigation, Structural Features, and Mechanism Studies
  作者：Quan Zhou、Jing-Fan Zhang、Hui Cao、Rui Zhong、Xiu-Feng Hou

  DOI：10.1021/acs.joc.6b01836

  日期：2016.12.16

  protocols for direct regioselective functionalization of 2-arylbenzoxazoles are in high demand. Herein, we disclose a general method for selective ortho-olefination of 2-arylbenzo[d]oxazoles with alkenes enabled by versatile Cp*Rh(III) in high yields. This protocol features broad functional group tolerance and high regioselectivity. Intermolecular competition studies and kinetic isotope effect experiments imply

  2-芳基苯并恶唑是有前途的分子，可在医学和材料领域得到潜在应用。对2-芳基苯并恶唑的直接区域选择性官能化的有效方案有很高的要求。在本文中，我们公开了通用的Cp * Rh（III）能够以高收率实现2-芳基苯并[ d ]恶唑与烯烃的选择性邻烯化的一般方法。该协议具有广泛的功能基团耐受性和高区域选择性。分子间竞争研究和动力学同位素效应实验表明，氧化烯化过程是通过亲电的C–H活化途径发生的。m的分子结构在间位F原子或杂原子取代基存在的情况下，氟取代的烯化产物可在受阻更强的位置证实区域选择性C–H活化/烯化。在单-和双-烯烃化产物的结构中观察到明显的扭转角，这导致烯烃质子的化学位移明显不同。另外，两个克级反应和进一步的转化实验表明，该方法对于合成邻链烯基化的2-芳基苯并恶唑衍生物是实用的。
• p -Toluenesulfonic acid-catalyzed metal-free formal [4 + 1] heteroannulation via N H/O H/S H functionalization: One-pot access to 2-aryl/hetaryl/alkyl benzazole derivatives
  作者：Abhijeet Srivastava、Gaurav Shukla、Maya Shankar Singh

  DOI：10.1016/j.tet.2016.12.073

  日期：2017.2

  concise and direct one-pot [4 + 1] synthetic strategy for the construction of 2-substituted benzazoles such as benzoxazoles and benzothiazoles has been disclosed in high yields (80–98%) by cascade coupling reaction of 2-amino(thio)phenols with β-oxodithioesters. The current approach enables NH/OH/SH functionalization in one-pot under solventless condition leading to diverse benzazoles without use of any

  通过2-氨基（硫代）的级联偶联反应，已公开了一种高产率（80-98％）的简洁，直接的一锅[4 +1]合成策略，用于构建2-取代的苯并唑，如苯并恶唑和苯并噻唑酚与β-氧二硫代酯。目前的方法可以在无溶剂条件下在一锅中实现N H / O H / S H官能化，从而无需使用任何外部金属即可产生多种苯并恶唑。各种各样的2-氨基（硫代）酚和β-氧二硫代酯均具有出色的官能团耐受性，可用于该转化。此外，我们通过证明其与DNA拓扑异构酶II抑制剂的多样化多样化的相容性，抢占了这一新策略的广泛含义。
• De Meo; Pedini; Ricci, Il Farmaco, 1989, vol. 44, # 5, p. 475 - 482
  作者：De Meo、Pedini、Ricci、Bastianini、Sposini、Jacquignon

  DOI：——

  日期：——
• DE, MEO G.;PEDINI, M.;RICCI, A.;BASTIANINI, L.;SPOSINI, T.;JACQUIGNON, P., FARMACO, 44,(1989) N, C. 2
  作者：DE, MEO G.、PEDINI, M.、RICCI, A.、BASTIANINI, L.、SPOSINI, T.、JACQUIGNON, P.

  DOI：——

  日期：——