2-(3-fluorophenyl)-5-methyloxazol-4(5H)-one | 1432618-83-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-(3-fluorophenyl)-5-methyloxazol-4(5H)-one
• CAS: 1432618-83-1
• 化学式: C₁₀H₈FNO₂
• 分子量: 193.177
• InChiKey: OGWAOJZQTKBKTP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.52
• 重原子数：
  14.0
• 可旋转键数：
  1.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  38.66
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  β-硝基苯乙烯 、 2-(3-fluorophenyl)-5-methyloxazol-4(5H)-one 在 (S)-1-(3,5-bis(trifluoromethyl)phenyl)-3-(3,3-dimethyl-1-(piperidin-1-yl)butan-2-yl)thiourea 作用下， 以 甲基叔丁基醚 为溶剂， 反应 40.5h， 以90%的产率得到(S)-2-(3-fluorophenyl)-5-methyl-5-((S)-2-nitro-1-phenylethyl)oxazol-4(5H)-one
  参考文献：
  名称：

  Organocatalytic Asymmetric Michael Addition of 5H-Oxazol-4-ones to Nitroolefins

  摘要：

  The first organocatalytic asymmetric Michael addition of 5H-oxazol-4-ones to nitroolefins has been developed. In the presence of easily prepared L-tert-leucine-derived tertiary amine/thiourea catalyst, the Michael addition of 5H-oxazol-4-ones to nitroolefins proceeded in an excellent diastereo- and enantioselective manner (up to 99% ee and >19:1 dr). The Michael adducts obtained are valuable precursors for the synthesis of chiral alpha-alkyl-alpha-hydroxy carboxylic acid derivatives, which represent a series of versatile building blocks in many biologically active compounds.

  DOI：

  10.1021/ol401062z

文献信息

• Enantioselective Synthesis of Dialkylated α-Hydroxy Carboxylic Acids through Asymmetric Phase-Transfer Catalysis
  作者：Shaobo Duan、Sanliang Li、Xinyi Ye、Nuan-Nuan Du、Choon-Hong Tan、Zhiyong Jiang

  DOI：10.1021/acs.joc.5b01081

  日期：2015.8.7

  the presence of an L-tert-leucine-derived urea–ammonium salt as phase-transfer catalyst, a highly enantioselective alkylation of 5H-oxazol-4-ones with various benzyl bromides and allylic bromides has been developed to furnish catalytic asymmetric synthesis of biologically important dialkylated α-hydroxy carboxylic acids with a broad scope. This is the first example of an L-amino acid-derived urea–ammonium

  在一个存在大号-叔-亮氨酸衍生的脲-铵盐作为相转移催化剂，为5的高度对映选择性烷基化ħ -恶唑-4-酮与各种苄基溴化物和烯丙基溴化物已经发展到配料催化不对称合成具有重要生物学意义的二烷基化的α-羟基羧酸具有广泛的应用范围。这是将L-氨基酸衍生的尿素-铵盐用作具有出色催化效率的相转移催化剂的第一个例子。
• Highly Enantio- and Diastereoselective [4 + 2] Cycloaddition of 5<i>H</i>-oxazol-4-ones with <i>N</i>-Maleimides
  作者：Shuai Qiu、Richmond Lee、Bo Zhu、Michelle L. Coote、Xiaowei Zhao、Zhiyong Jiang

  DOI：10.1021/acs.joc.6b01451

  日期：2016.9.2

  An organocatalytic asymmetric reaction between 5H-oxazol-4-ones and N-substituted maleimides is disclosed. Employing Takemoto's chiral tertiary amine-thiourea as the catalyst, [4 + 2] annulation reactions were performed with high chemoselectivity, leading to a series of biologically important chiral oxo-bridged piperidone-fused succinimides in good to excellent enantioselectivities (up to >99% ee) and >19:1 dr.
• Highly enantioselective α-sulfenylation of 5H-oxazol-4-ones to N-(sulfanyl)succinimides
  作者：Mei Xu、Baokun Qiao、Shaobo Duan、Hongjun Liu、Zhiyong Jiang

  DOI：10.1016/j.tet.2014.09.037

  日期：2014.11

  An unprecedented asymmetric alpha-sulfenylation of 5H-oxazol-4-ones to N-(sulfanyl)succinimides has been established, to access various alpha-sulfenylated adducts with good to excellent enantioselectivities (86-95% ee) by utilizing a cinchona alkaloid-derived squaramide as catalyst. The conditions of this alpha-sulfenylation protocol simultaneously satisfy N-(arylthio)succinimides, N-(benzylthio)succinimides, and N-(alkylthio)succinimides by tuning the substituted groups of 5H-oxazol-4-ones on the 2-position as well as additives. (C) 2014 Elsevier Ltd. All rights reserved.