(4R,5R)-4-methyl-2,5-diphenyl-2-oxazoline | 168112-44-5

• 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: (4R,5R)-4-methyl-2,5-diphenyl-2-oxazoline
• 英文别名: (4R,5S)-4-methyl-2,5-diphenyl-2-oxazoline；4-methyl-2,5-diphenyl-4,5-dihydrooxazole；(4R,5R)-4-methyl-2,5-diphenyl-4,5-dihydro-1,3-oxazole
• CAS: 168112-44-5
• 化学式: C₁₆H₁₅NO
• 分子量: 237.301
• InChiKey: FBQLSYLRJWTPGK-DOMZBBRYSA-N

物化性质

• 沸点：
  377.6±31.0 °C(Predicted)
• 密度：
  1.10±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  21.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (4R,5R)-4-methyl-2,5-diphenyl-2-oxazoline 在 1,4-二氧六环 、 盐酸 作用下， 生成 benzoic acid-((1RS,2RS)-2-amino-1-phenyl-propyl ester); hydrochloride
  参考文献：
  名称：

  Kojima, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1959, vol. 79, p. 20,22

  摘要：

  DOI：
• 作为产物：
  描述：

  苯甲酰氯 在 硫酸 作用下， 生成 (4R,5R)-4-methyl-2,5-diphenyl-2-oxazoline
  参考文献：
  名称：

  Taguchi; Kojima, Pharmaceutical Bulletin, 1955, vol. 3, p. 4,5

  摘要：

  DOI：

文献信息

• Direct asymmetric synthesis of oxazolines from olefins using a chiral nitridomanganese complex: a novel three-component coupling leading to chiral oxazolines
  作者：Satoshi Minakata、Masaaki Nishimura、Toru Takahashi、Yoji Oderaotoshi、Mitsuo Komatsu

  DOI：10.1016/s0040-4039(01)01963-3

  日期：2001.12

  A new synthetic method for chiral oxazolines has been developed by N1 unit transfer to olefins using a chiral nitridomanganese complex. When trans-disubstituted styrenes were treated with chiral complex 1 in the presence of an acid chloride, oxazolines were obtained with high enantioselectivities (up to 92% ee). Furthermore, the produced oxazolines could be easily converted into β-amino alcohols, which

  通过使用手性硝基锰锰络合物将N1单元转移到烯烃中，已经开发了一种新的手性恶唑啉合成方法。当在酰氯存在下用手性配合物1处理反式-二取代的苯乙烯时，以高对映选择性（至多92％ee）获得恶唑啉。此外，所产生的恶唑啉可以容易地转化为作为麻黄碱衍生物的β-氨基醇。
• Asymmetric N1 Unit Transfer to Olefins with a Chiral Nitridomanganese Complex:  Novel Stereoselective Pathways to Aziridines or Oxazolines
  作者：Masaaki Nishimura、Satoshi Minakata、Toru Takahashi、Yoji Oderaotoshi、Mitsuo Komatsu

  DOI：10.1021/jo016146d

  日期：2002.4.1

  chiral N-unsubstituted aziridines. It was found that the reaction was applicable to the asymmetric synthesis of 2-oxazolines from olefins when acyl chlorides were employed as activators. Complex 1 provided an effective asymmetric environment for trans-disubstituted styrenes in the reaction (up to 92% ee). This is the first example of a direct asymmetric synthesis of 2-oxazolines from olefins. Additional

  已发现手性硝基锰锰配合物1是从烯烃（例如苯乙烯及其衍生物）不对称合成氮丙啶和2-恶唑啉的高度潜在的N1单元来源。当在吡啶，吡啶N-氧化物和银盐存在下使用磺酰氯作为配合物的活化剂时，烯烃与配合物1的反应顺利进行，得到N-磺酰化氮丙啶。使用2-三甲基甲硅烷基乙烷磺酰氯（SESC1）将苯乙烯衍生物与配合物1进行叠氮化，得到N-SES-氮丙啶，其易于转化为手性N-未取代的氮丙啶。已经发现，当使用酰氯作为活化剂时，该反应适用于由烯烃的不对称合成2-恶唑啉。配合物1为反应中的反式二取代苯乙烯提供了有效的不对称环境（ee高达92％）。这是从烯烃直接不对称合成2-恶唑啉的第一个例子。在该研究过程中进行的另外的实验表明，该反应涉及N-酰基氮丙啶中间体的异构化。
• Visible light bromide catalysis for oxazoline, pyrrolidine, and dihydrooxazine syntheses <i>via</i> C_sp³–H functionalizations
  作者：Navdeep Kaur、Elizabeth C. Ziegelmeyer、Olutayo N. Farinde、Jonathon T. Truong、Michelle M. Huynh、Wei Li

  DOI：10.1039/d1cc04588a

  日期：——

  (N)-centered radical for a site-selective hydrogen atom transfer (HAT) process. This strategy enabled the unconventional syntheses of a number of N-heterocycles dependent on the amide identity. We also discovered a nucleophilicity-dependent kinetic resolution for stereochemical differentiation of Csp3–H bonds that enabled the stereoselective synthesis of cis- and trans-oxazolines.

  此处描述了催化苄基 C sp 3 –H 功能化协议。这种可见光介导的过程集中在利用溴化物催化剂和氧化剂来生成以氮 (N) 为中心的自由基，用于位点选择性氢原子转移 (HAT) 过程。这种策略使依赖酰胺身份的许多 N-杂环的非常规合成成为可能。我们还发现了 C sp 3 -H 键立体化学分化的亲核依赖性动力学分辨率，这使得顺式和反式恶唑啉的立体选择性合成成为可能。
• [EN] SYNTHESIS OF OXAZOLINE COMPOUNDS<br/>[FR] SYNTHÈSE DE COMPOSÉS D'OXAZOLINE
  申请人：UNIV HONG KONG POLYTECHNIC

  公开号：WO2010015211A1

  公开（公告）日：2010-02-11

  The present invention provides an improved process for preparing an oxazoline compound of the formula: (I) wherein R1 and R2 are independently hydrogen, sulfide, sulfoxide, sulfonyl, optionally substituted lower alkyl, optionally substituted aralkyl, optionally substituted aryl or optionally substituted polycyclic arylyl; or R1 and R2 combined together with the carbon atoms to which they are attached form an optionally substituted fused 6-member aromatic ring provided that R1 and R2 are attached to carbon atoms adjacent to each other; and R3 is hydrogen, sulfide, sulfoxide, sulfonyl, optionally substituted lower alkyl, optionally substituted aralkyl, optionally substituted aryl or optionally substituted polycyclic arylyl; or an enantiomer therof; or an enantiomeric mixture therof; comprising the step of contacting an acylamino alcohol compound to a suitable amount of fluoroalkanesulfonyl fluoride compound and organic basic reagent. By using a fluoroalkanesulfonyl fluoride compound with an organic basic reagent, the present invention efficiently converts acylamino alcohol compounds into highly chemoselective oxazoline compounds with a remarkable variety of substrates, mild conditions and relatively short reaction time.

  本发明提供了一种改进的制备氧杂环丙烯酮化合物的方法，其化学式为：(I)，其中R1和R2分别为氢、硫化物、亚氧化物、磺酰基、可选择取代的较低烷基、可选择取代的芳基烷基、可选择取代的芳基或可选择取代的多环芳基；或者R1和R2与它们附着的碳原子结合在一起形成可选择取代的融合6-环芳香环，前提是R1和R2附着在彼此相邻的碳原子上；而R3为氢、硫化物、亚氧化物、磺酰基、可选择取代的较低烷基、可选择取代的芳基烷基、可选择取代的芳基或可选择取代的多环芳基；或其对映体；或其对映体混合物；包括将酰胺醇化合物与适量的氟代烷磺酰氟化合物和有机碱性试剂接触的步骤。通过使用氟代烷磺酰氟化合物和有机碱性试剂，本发明能够高效地将酰胺醇化合物转化为高度化学选择性的氧杂环丙烯酮化合物，适用于多种底物，反应条件温和，反应时间相对较短。
• Chiral Hypervalent Iodine Catalysis Enables an Unusual Regiodivergent Intermolecular Olefin Aminooxygenation
  作者：Fan Wu、Navdeep Kaur、Nur-E Alom、Wei Li

  DOI：10.1021/jacsau.1c00103

  日期：2021.6.28

  strategy is described here. Amide is used as the O- and N- source to probe for regiocontrol strategies. Notably, simple additives can be selectively introduced to achieve regiodivergent oxyamination processes for electronically activated alkenes while being regio-complementary for unactivated alkenes. Our preliminary data demonstrates that this regiocontrol strategy based on nucleophile can also be applied

  本文描述了一种新型碘化物催化分子间氨氧化策略。酰胺用作 O 源和 N 源来探测区域控制策略。值得注意的是，可以选择性地引入简单的添加剂，以实现电子活化烯烃的区域发散的氧胺化过程，同时对未活化的烯烃进行区域互补。我们的初步数据表明，这种基于亲核试剂的区域控制策略也可以应用于使用手性高价碘催化的不对称过程。