5-(4-methoxyphenyl)-2-n-octyloxazole | 1228306-52-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-(4-methoxyphenyl)-2-n-octyloxazole
• 英文别名: 5-(4-methoxyphenyl)-2-octyloxazole
• CAS: 1228306-52-2
• 化学式: C₁₈H₂₅NO₂
• 分子量: 287.402
• InChiKey: KLFKDUJEXWSFPN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.25
• 重原子数：
  21.0
• 可旋转键数：
  9.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  35.26
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  5-(4-甲氧基苯基)噁唑 、 1-碘辛烷 在 copper(l) iodide 、 nickamine 、 lithium tert-butoxide 作用下， 以 1,4-二氧六环 为溶剂， 反应 16.0h， 以86%的产率得到5-(4-methoxyphenyl)-2-n-octyloxazole
  参考文献：
  名称：

  杂环C的镍/铜催化的直接烷基化？H债券

  摘要：

  选择性太强：已开发出一种通用且直接的方案，可将未活化的烷基卤与杂环CH键交叉偶联。该转化是化学和区域选择性的，并且两个偶联伴侣上的许多官能团都是可以容忍的。该方法使用廉价的镍/铜催化剂，并大大扩展了CH功能化的范围（参见方案）。

  DOI：

  10.1002/anie.200907040

文献信息

• Synthesis of Quinoline-Based NNN-Pincer Nickel(II) Complexes: A Robust and Improved Catalyst System for C–H Bond Alkylation of Azoles with Alkyl Halides
  作者：Ulhas N. Patel、Dilip K. Pandey、Rajesh G. Gonnade、Benudhar Punji

  DOI：10.1021/acs.organomet.6b00201

  日期：2016.6.13

  The quinoline-based pincer nickel(II) complexes kappa(N),kappa(N),kappa(N) -R2N-C6H4-(mu-N)-C9H6N}NiX (((NNNQ)-N-R2)NiCl: R = Me) 2a; R = Et, 2b) were synthesized by the reaction of the ligand precursors ((NNNQ)-N-R2)H (R = Me, 1a; R = Et, 1b) with (DME)NiCl2 in the presence of Et3N. Similarly, the pincer mickel(II) derivatives ((NNNQ)-N-R2)NiX (R = Me, X = Br, 3a; R = Et, X = Br, 3b; R = Me, X = OAc, 4a) were obtained by treatment of the ligands ((NNNQ)-N-R2)H with the nickel precursor (THF)(2)NiBr2 or Ni(QAc)(2). All of these complexes were characterized by H-1 and C-13 NMR spectroscopy as well as by elemental analysis. Further, the molecular structures of 2a and 3a,b were elucidated by X-ray crystallography. Complex 2a is found to be an efficient catalyst for the direct C-H bond alkylation of substituted benzothiazoles and oxazoles with various unactivated alkyl halides containing beta-hydrogens under mild reaction conditions. The catalyst 2a is very robust and was recycled and reused five times for the alkylation reaction without a decrease in its catalytic activity. Preliminary studies reveal that the catalyst 2a acts as an active catalyst and the alkylation reaction appears to operate via a radical pathway.