6-methyl-2-(phenylethynyl)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: 6-methyl-2-(phenylethynyl)benzoxazole
• 英文别名: 6-Methyl-2-(2-phenylethynyl)-1,3-benzoxazole；6-methyl-2-(2-phenylethynyl)-1,3-benzoxazole
• 化学式: C₁₆H₁₁NO
• 分子量: 233.269
• InChiKey: NVXPKFXABRWHDT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  26
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  6-甲基苯并恶唑 、 苯乙炔 在 Pd(II)(N-(3-(1-hydroxy-3-phenylpropan-2-yl carbamoyl)benzylidene)-2-methylpropan-2-amineoxide(-2H)) 、 caesium carbonate 、 silver(l) oxide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 以72%的产率得到6-methyl-2-(phenylethynyl)benzoxazole
  参考文献：
  名称：

  Dehydrogenative and decarboxylative C–H alkynylation of heteroarenes catalyzed by Pd(II)–carbene complex

  摘要：

  The direct alkynylation of heteroarenes was accomplished with easily prepared Pd(II) carbene complex (Pd Cat.) by two complementary strategies. Pd Cat. catalysed cross-dehydrogenative coupling of terminal alkynes with heteroarenes was achieved in the first method and decarboxylative coupling of aryl propiolic acids with heteroarenes was investigated in the second method. Both the methodologies tolerate a broad variety of heteroarenes that include benzoxazoles, benzothiazoles, imidazole and benzimidazoles. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2015.02.020

文献信息

• 벤즈옥사졸 유도체의 제조방법
  申请人：KNU-Industry Cooperation Foundation 강원대학교산학협력단(220040088571) BRN ▼221-82-10213

  公开号：KR20150014210A

  公开（公告）日：2015-02-06

  본 발명은 하기 화학식 1로 표시되는 알키닐레이션(alkynylation) 된 벤즈옥사졸(benzoxazole) 유도체의 제조방법에 관한 것으로, 보다 상세하게는, 팔라듐 촉매, 포스핀계 리간드로 1,3-bis(diphenylphosphino)propane 존재 하에서 은염(silver salt), 프로피올릭 산(propiolic acid) 및 벤즈옥사졸 화합물을 반응시켜 알키닐레이션(alkynylation) 된 벤즈옥사졸 유도체의 제조방법에 관한 것이다.

  这项发明涉及一种制备烷基化（alkynylation）苯并噁唑（benzoxazole）衍生物的方法，具体而言，涉及钯催化剂，磷配体1,3-双(二苯基膦基)丙烷存在下，通过银盐（silver salt）、丙炔酸（propiolic acid）和苯并噁唑化合物的反应制备烷基化（alkynylation）苯并噁唑衍生物的方法。
• Palladium-Catalyzed Decarboxylative C-H Alkynylation of Benzoxazoles with α,β-Ynoic Acids
  作者：Jinsik Kim、Dongjin Kang、Eun Jeong Yoo、Phil Ho Lee

  DOI：10.1002/ejoc.201301441

  日期：2013.12

  Palladium-catalyzed decarboxylative C–H alkynylation of benzoxazoles with α,β-ynoic acids was achieved for the first time. This straightforward method was found to be synthetically effective without strong base under air.

  首次实现了钯催化的苯并恶唑与 α,β-炔诺酸的脱羧 C-H 炔化反应。发现这种简单的方法在空气中没有强碱的情况下具有综合效果。