2-[4-(S)-ethyl-4,5-dihydrooxazolin-2-yl]pyridine | 108915-06-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: 2-[4-(S)-ethyl-4,5-dihydrooxazolin-2-yl]pyridine
• 英文别名: (S)-(-)-4-Ethyl-2-(2-pyridinyl)-2-oxazolin；(4S)-4-ethyl-2-pyridin-2-yl-4,5-dihydro-1,3-oxazole
• CAS: 108915-06-6
• 化学式: C₁₀H₁₂N₂O
• 分子量: 176.218
• InChiKey: FNISSJKNKDPUKD-QMMMGPOBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  34.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-[4-(S)-ethyl-4,5-dihydrooxazolin-2-yl]pyridine 、 cobalt(II) chloride 以 四氢呋喃 为溶剂， 以71%的产率得到
  参考文献：
  名称：

  Pyridine–oxazoline and quinoline–oxazoline ligated cobalt complexes: Synthesis, characterization, and 1,3-butadiene polymerization behaviors

  摘要：

  A series of cobalt complexes supported by pyridine-oxazoline (Pyox) and quinoline-oxazoline (Quox) were synthesized. Determined by single crystal X-ray crystallography, complexes 6a and 7c adopted distorted octahedron and trigonal bipyramid geometries, respectively, while complex 6b existed as an ion pair comprised of [CoL2](2+) and [CoCl4](2-), in which the cationic and anionic moieties displayed distorted octahedron and tetrahedral geometries, respectively. Upon activation with ethylaluminium sesquichloride (EASC), these cobalt complexes exhibited high catalytic activity and cis-1,4-selectivity toward 1,3-butadiene polymerization. The selectivity of the catalytic system could be switched from cis-1,4 to 1,2-fashion via the addition of PPh3. The effects of ligand environment, polymerization temperature, and [Al]/[Co] ratio on the polymerization were investigated in detail. (C) 2015 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2015.07.013
• 作为产物：
  描述：

  2-吡啶甲酰氯 在 sodium hydride 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 26.0h， 生成 2-[4-(S)-ethyl-4,5-dihydrooxazolin-2-yl]pyridine
  参考文献：
  名称：

  Pyridine–oxazoline and quinoline–oxazoline ligated cobalt complexes: Synthesis, characterization, and 1,3-butadiene polymerization behaviors

  摘要：

  A series of cobalt complexes supported by pyridine-oxazoline (Pyox) and quinoline-oxazoline (Quox) were synthesized. Determined by single crystal X-ray crystallography, complexes 6a and 7c adopted distorted octahedron and trigonal bipyramid geometries, respectively, while complex 6b existed as an ion pair comprised of [CoL2](2+) and [CoCl4](2-), in which the cationic and anionic moieties displayed distorted octahedron and tetrahedral geometries, respectively. Upon activation with ethylaluminium sesquichloride (EASC), these cobalt complexes exhibited high catalytic activity and cis-1,4-selectivity toward 1,3-butadiene polymerization. The selectivity of the catalytic system could be switched from cis-1,4 to 1,2-fashion via the addition of PPh3. The effects of ligand environment, polymerization temperature, and [Al]/[Co] ratio on the polymerization were investigated in detail. (C) 2015 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2015.07.013

文献信息

• Arene ruthenium complexes with pyridyloxazolines: synthesis and applications as asymmetric catalysts for Diels–Alder reactions †
  作者：Adam J. Davenport、David L. Davies、John Fawcett、Shaun A. Garratt、David R. Russell

  DOI：10.1039/b006530g

  日期：——

  Reaction of the dimers [RuCl2(arene)]2 with pyridyloxazolines (pymox) gave complexes [RuCl(pymox)(arene)][SbF6] 1–12 which have been fully characterised. Using chiral ligands diastereomers are formed, the diastereoselectivity depending on the substituents on the arene and on the oxazoline. The complexes [RuCl(Me2-pymox)(mes)][SbF6] 1, [RuCl(Ph-pymox)(mes)][SbF6] 3, [RuCl(iPr-pymox)(mes)][SbF6] 5 and [RuCl(indanyl-pymox)(mes)][SbF6] 12 (mes = mesitylene) have been characterised by X-ray crystallography. Treatment of these cations with AgSbF6 generates dications which in some cases can be isolated as aqua species [Ru(OH2)(pymox)(arene)]2+; these dications are enantioselective catalysts for Diels–Alder reactions of acroleins and dienes; a mechanism is proposed which accounts for the observed enantioselectivity.

  二聚体[RuCl2(arene)]2 与吡啶恶唑（hypmox）反应生成了[RuCl(hypmox)(arene)][SbF6] 1â12 复合物，对这些复合物进行了全面的表征。使用手性配体可形成非对映异构体，非对映选择性取决于炔和噁唑啉上的取代基。复合物 [RuCl(Me2-pymox)(mes)][SbF6]1、[RuCl(Ph-pymox)(mes)][SbF6]3、[RuCl(iPr-pymox)(mes)][SbF6]5 和 [RuCl(茚基-pymox)(mes)][SbF6]12（mes=mesitylene）已通过 X 射线晶体学进行了表征。用 AgSbF6 处理这些阳离子会产生二阳离子，在某些情况下，这些二阳离子可分离为水合物 [Ru(OH2)(pymox)(arene)]2+；这些二阳离子是丙烯醛和二烯的 DielsâAlder 反应的对映体选择性催化剂；提出了一种机制来解释所观察到的对映体选择性。
• Brunner, Henri; Obermann, Uwe, Chemische Berichte, 1989, vol. 122, p. 499 - 508
  作者：Brunner, Henri、Obermann, Uwe

  DOI：——

  日期：——
• BRUNNER, HENRI;OBERMANN, UWE, CHEM. BER., 122,(1989) N, C. 499-507
  作者：BRUNNER, HENRI、OBERMANN, UWE

  DOI：——

  日期：——