6-methoxy-2-phenylbenzo[d]oxazole | 77791-12-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 6-methoxy-2-phenylbenzo[d]oxazole
• 英文别名: 6-methoxy-2-phenylbenzoxazole；6-methoxy-2-phenyl-1,3-benzoxazole
• CAS: 77791-12-9
• 化学式: C₁₄H₁₁NO₂
• 分子量: 225.247
• InChiKey: NTVFSADHKUQMTM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  35.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  N-(4-甲氧基苯基)苯甲酰胺肟 在 碘 、 potassium acetate 作用下， 以 N-甲基吡咯烷酮 为溶剂， 以40%的产率得到6-methoxy-2-phenylbenzo[d]oxazole
  参考文献：
  名称：

  碘通过氧化环化和环收缩作用从氨基肟促进一锅法合成2-芳基苯并恶唑

  摘要：

  通过使用mid胺肟而不是有限的2-氨基苯酚或2-卤代酰胺作为底物，开发了I 2促进的顺序氧化环化和环收缩反应来合成2-芳基苯并恶唑。该方法提供了在2-芳基苯并恶唑支架的任何位置引入某些基团的潜在途径。

  DOI：

  10.1002/ejoc.201901468

文献信息

• Studies on Uricosuric Diuretics. II. Substituted 7,8-Dihydrofuro(2,3-g)-1,2-benzisoxazole-7-carboxylic acids and 7,8-Dihydrofuro(2,3-g)benzoxazole-7-carboxylic acids.
  作者：Haruhiko SATO、Takashi DAN、Etsuro ONUMA、Haruko TANAKA、Bunya AOKI、Hiroshi KOGA

  DOI：10.1248/cpb.39.1760

  日期：——

  A series of substituted 7, 8-dihydrofuro[2, 3-g]-1, 2-benzisoxazole-7-carboxylic acids 9 and 7, 8-dihydrofuro[2, 3-g]benzoxazole-7-carboxylic acids 12 were synthesized and evaluated for uricosuric and diuretic activities in rats. Many of the benzisoxazole derivatives 9 showed uricosuric and only weak diuretic activities, whereas the benzoxazoles 12 exhibited potent diuretic activities with little affecting urate excretion. Among these compounds, 5-chloro-7, 8-dihydro-3-phenylfuro[2, 3-g]-1, 2-benzisoxazole 7-carboxylic acid (9b, AA-193) was found to be a potent uricosuric agent without diuretic activity and was selected for further development.

  一系列取代的7,8-二氢呋喃并[2,3-g]-1,2-苯并异恶唑-7-羧酸9和7,8-二氢呋喃并[2,3-g]苯并恶唑-7-羧酸12被合成并在大鼠中评估了其促尿酸排泄和利尿活性。许多苯并异恶唑衍生物9显示出促尿酸排泄活性，而仅有微弱的利尿活性，而苯并恶唑12则表现出强有力的利尿活性，对尿酸排泄影响甚微。在这些化合物中，5-氯-7,8-二氢-3-苯基呋喃并[2,3-g]-1,2-苯并异恶唑-7-羧酸（9b，AA-193）被发现是一种强效的促尿酸排泄剂，没有利尿活性，并被选中进行进一步开发。
• A Divergent and Selective Synthesis of Isomeric Benzoxazoles from a Single N–Cl Imine
  作者：Cheng-yi Chen、Teresa Andreani、Hongmei Li

  DOI：10.1021/ol202844c

  日期：2011.12.2

  divergent and regioselective synthesis of either 3-substituted benzisoxazoles or 2-substituted benzoxazoles from readily accessible ortho-hydroxyaryl N–H ketimines is described. The reaction proceeds in two distinct pathways through a common N–Cl imine intermediate: (a) N–O bond formation to form benzisoxazole under anhydrous conditions and (b) NaOCl mediated Beckmann-type rearrangement to form benzoxazole

  描述了从容易获得的邻羟基芳基NH酮亚胺中发散和区域​​选择性合成3-取代的苯并异恶唑或2-取代的苯并恶唑的方法。反应通过共同的N–Cl亚胺中间体以两种不同的途径进行：（a）在无水条件下形成N–O键形成苯并异恶唑；（b）分别由NaOCl介导的贝克曼型重排形成苯并恶唑。反应路径还取决于芳环的电子性质，富电子的芳环有利于重排，缺电子的环有利于N–O键的形成。提出了通过[1,2]-芳基净迁移的贝克曼型重排机制，用于形成2-取代的苯并恶唑。
• Hypervalent iodine-mediated synthesis of benzoxazoles and benzimidazoles via an oxidative rearrangement
  作者：Xiaohui Zhang、Ruofeng Huang、Jérôme Marrot、Vincent Coeffard、Yan Xiong

  DOI：10.1016/j.tet.2014.11.066

  日期：2015.1

  was found to act as an efficient oxidant to trigger the [1,2]-aryl migration towards the formation of the desired heterocycles. Depending on the substitution pattern, the results revealed another mechanistic pathway through which benzisoxazoles or 1H-indazoles could be formed. The Beckmann-type rearrangement strategy was applied to the synthesis of benzimidazole-containing biorelevant targets such as

  已经开发出贝克曼型重排邻羟基和邻氨基芳基NH酮亚胺，分别制备苯并恶唑和N- Ts苯并咪唑。通过使氨与相应的酮缩合，可以容易地制备酮亚胺衍生物，并且发现（二乙酰氧基碘）苯可作为有效的氧化剂来触发[1,2]-芳基向形成所需杂环的迁移。根据取代模式，结果揭示了另一种可能形成苯并异恶唑或1 H-吲唑的机理。Beckmann型重排策略用于合成含苯并咪唑的生物相关靶标，如氯咪唑和克立咪唑。
• Catalytic Staudinger/Aza-Wittig Sequence by in situ Phosphane Oxide Reduction
  作者：Henri A. van Kalkeren、Colet te Grotenhuis、Frank S. Haasjes、C. Rianne A. Hommersom、Floris P. J. T. Rutjes、Floris L. van Delft

  DOI：10.1002/ejoc.201300585

  日期：2013.11

  A Staudinger/aza-Wittig reaction sequence is described that is catalytic in phosphorus. Towards this end, the phosphane oxide is reduced in situ by diphenylsilane, which allows for substoichiometric amounts of the catalyst 5-phenyldibenzophosphole to be used. The substrate scope is investigated and benzoxazoles, benzodiazepine imidates and a 2-methoxypyrrole were successfully synthesized. These investigations

  描述了在磷中具有催化作用的 Staudinger/aza-Wittig 反应序列。为此，氧化膦被二苯基硅烷原位还原，这允许使用亚化学计量量的催化剂5-苯基二苯并磷。研究了底物范围并成功合成了苯并恶唑、苯并二氮杂亚胺酯和2-甲氧基吡咯。这些研究表明，需要快速的 aza-Wittig 反应才能获得高产率。
• Base-Free Selective <i>O</i> -Arylation and Sequential [3,3]-Rearrangement of Amidoximes with Diaryliodonium Salts: Synthesis of 2-Substituted Benzoxazoles
  作者：Wei-Min Shi、Xiao-Hua Li、Cui Liang、Dong-Liang Mo

  DOI：10.1002/adsc.201700906

  日期：2017.12.11

  of functionalized 2‐substituted benzoxazoles can be prepared in good yields from amidoximes and diaryliodonium salts by selective O‐arylation and sequential [3,3]‐rearrangement under metal‐free conditions. O‐arylation of amidoximes was promoted by 3 Å molecule sieves in the absence of a base and a sequential TFA‐mediated [3,3]‐rearrangement was used to synthesize 2‐substituted benzoxazoles. Both of

  在无金属条件下，可以通过选择性O芳基化和顺序[3,3]重排，从ox胺肟和二芳基碘鎓盐中以高收率制备各种功能化的2-取代苯并恶唑。ø偕胺肟的-arylation用3埃分子筛在不存在碱的和促进连续TFA介导的，使用[3,3] -rearrangement以合成2-取代的苯并恶唑。两者的ø -芳基产品和重排产物用宽范围敏感的官能团，如酯，醛，硝基，乙烯基，胺和酰胺基团除了卤化物的兼容。分两步以克规模制备了带有双苯并恶唑的双齿N-配体。