2-methyl-5-(3′-methylphenyl)oxazole | 31699-02-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-methyl-5-(3′-methylphenyl)oxazole
• 英文别名: 2-methyl-5-(4'-nitrophenyl)oxazole；2-methyl-5-(4-nitrophenyl)oxazole；2-methyl-5-(4-nitro-phenyl)-oxazole；2-Methyl-5-(4-nitro-phenyl)-oxazol；2-Methyl-5-(4-nitrophenyl)-1,3-oxazole
• CAS: 31699-02-2
• 化学式: C₁₀H₈N₂O₃
• mdl: MFCD00022431
• 分子量: 204.185
• InChiKey: KGVYXYUOGFKYDQ-UHFFFAOYSA-N

物化性质

• 熔点：
  161-162 °C
• 沸点：
  350.3±17.0 °C(Predicted)
• 密度：
  1.285±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  71.8
• 氢给体数：
  0
• 氢受体数：
  4

安全信息

• 储存条件：
  室温

反应信息

• 作为产物：
  描述：

  2-甲基-5-苯基-噁唑 生成 2-methyl-5-(3′-methylphenyl)oxazole
  参考文献：
  名称：

  Gustak, Arhiv za Kemiju, 1952, vol. 24, p. 15; engl. Ref. S. 18

  摘要：

  DOI：

文献信息

• Synthesis of Highly Substituted Oxazoles through Iodine(III)-Mediated Reactions of Ketones with Nitriles
  作者：Akio Saito、Nao Hyodo、Yuji Hanzawa

  DOI：10.3390/molecules170911046

  日期：——

  trifluoromethanesulfonic acid (TfOH) or bis(trifluoromethane-sulfonyl)imide (Tf2NH), iodosobenzene (PhI=O) efficiently promoted the reactions of dicarbonyl compounds as well as monocarbonyl compounds with nitriles to give 2,4-disubstituted and 2,4,5-trisubstituted oxazole in a single step under the mild conditions.

  在三氟甲磺酸 (TfOH) 或双（三氟甲磺酰基）酰亚胺 (Tf2NH) 存在下，碘代苯 (PhI=O) 有效地促进了二羰基化合物以及单羰基化合物与腈的反应，生成 2,4-二取代和 2 ,4,5-三取代恶唑在温和条件下一步完成。
• Formation of Acyl-Substituted Nitrile Ylides by Rh₂(OAc)₄-Catalyzed Decomposition of<i>α</i>-Diazocarbonyl Compounds in Nitriles
  作者：Kazuaki Fukushima、Toshikazu Ibata

  DOI：10.1246/bcsj.68.3469

  日期：1995.12

  The Rh2(OAc)4-catalyzed reactions of α-diazocarbonyl compounds in nitrile in the presence of dimethyl acetylenedicarboxylate (DMAD) gave oxazole and pyrrole derivatives. The formation of the oxazole derivatives is explained in terms of the 1,5-cyclization of an acyl-substituted nitrile ylide intermediate, and the formation of the pyrrole derivatives is explained by the 1,3-dipolar cycloaddition of

  在乙炔二羧酸二甲酯 (DMAD) 存在下，α-重氮羰基化合物在腈中的 Rh2(OAc)4 催化反应得到恶唑和吡咯衍生物。恶唑衍生物的形成通过酰基取代的腈叶立德中间体的 1,5-环化来解释，吡咯衍生物的形成通过相同中间体与 DMAD 的 1,3-偶极环加成来解释。酰基取代的腈叶立德与丙炔酸甲酯的环加成反应的区域化学表明，丙炔基型共振结构的贡献在酰基取代的腈叶立德反应中起重要作用。
• One-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from aromatic ketones with molecular iodine, oxone, and trifluoromethanesulfonic acid in nitriles
  作者：Sho Imai、Hiroki Kikui、Katsuhiko Moriyama、Hideo Togo

  DOI：10.1016/j.tet.2015.06.022

  日期：2015.8

  Alkyl aryl ketones were successfully converted into the corresponding 2,5-disubstituted and 2,4,5-trisubstituted oxazoles in good to moderate yields in a one-pot manner, utilizing iodine, Oxone®, and trifluoromethanesulfonic acid in nitriles under transition-metal-free conditions. The present method could be used for the preparation of Oxaprozin from benzyl phenyl ketone and succinonitrile. A possible

  烷基芳基酮成功地转化成相应的2,5-二取代的和2,4,5-三取代的恶唑以优良至适中的产率在一锅方式，利用碘，过硫酸氢钾®，和在腈三氟甲磺酸下过渡金属无条件。本方法可用于由苄基苯基酮和琥珀腈制备氧杂丙嗪。提出了一种可能的反应机理，其中关键的中间体是α-碘烷基烷基芳基酮和α-碘烷基烷基芳基酮。
• Iodoarene-Mediated One-Pot Preparation of 2,4,5-Trisubstituted Oxazoles from Ketones
  作者：Hideo Togo、Yuhta Kawano

  DOI：10.1055/s-2007-1000871

  日期：2008.1

  2-Methyl-5-aryloxazole and 2-ethyl-5-aryloxazole derivatives were smoothly and efficiently obtained in one-pot manner from alkyl aryl ketones with iodoarene, m-chloroperbenzoic acid, and trifluoromethanesulfonic acid in acetonitrile and propionitrile, respectively. In these reactions, iodoarene works as a catalyst.

  2-甲基-5-芳基恶唑和2-乙基-5-芳基恶唑衍生物分别在乙腈和丙腈中以烷基芳基酮与碘芳烃、间氯过苯甲酸和三氟甲磺酸为原料，通过一锅法顺利高效地获得。在这些反应中，碘芳烃起到催化剂的作用。
• Iodoarene-catalyzed one-pot preparation of 2,4,5-trisubstituted oxazoles from alkyl aryl ketones with mCPBA in nitriles
  作者：Yuhta Kawano、Hideo Togo

  DOI：10.1016/j.tet.2009.05.003

  日期：2009.8

  aryliodonium I(III) species reacts with alkyl aryl ketone to form β-keto aryliodonium species. This in turn, reacts with nitrile to form the corresponding oxazole. Iodoarene works as a catalyst. However, one equivalent of iodoarene is required because one equivalent of reactive aryliodonium I(III) species must be formed prior to the reaction with alkyl aryl ketone. Then, by introducing an ionic liquid

  2,4,5-三取代的恶唑类可以在中等的收率由烷基芳基酮，iodoarene的反应容易地制备，中号氯过苯甲酸，并在乙腈，丙腈，丁腈三氟甲磺酸，和异丁腈，分别。在这里，反应性芳基碘鎓I（III）物种是通过碘芳烃与m的反应原位形成的CPBA和三氟甲磺酸与形成的芳基碘鎓I（III）物种与烷基芳基酮反应形成β-酮基芳基碘鎓物种。这又与腈反应形成相应的恶唑。碘芳烃起催化剂的作用。然而，需要一当量的碘芳烃，因为必须在与烷基芳基酮反应之前形成一当量的反应性芳基碘鎓I（III）。然后，通过将离子液体基团引入碘代芳烃中，形成离子液体负载的碘代芳烃，可简化恶唑的分离过程。向反应混合物中加入乙酸乙酯，用NaHCO 3水溶液洗涤反应混合物。，除去乙酸乙酯并用醚萃取残留物可提供中等纯度的恶唑，残留的离子液体负载的碘芳烃可在同一反应中重复使用。