3-hydroxy-2-pyridyl n-octyl sulfide | 1062541-47-2

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 3-hydroxy-2-pyridyl n-octyl sulfide
• 英文别名: 2-Octylsulfanylpyridin-3-ol
• CAS: 1062541-47-2
• 化学式: C₁₃H₂₁NOS
• 分子量: 239.382
• InChiKey: JVMNDWNOAUEALE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  16
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  58.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-溴-3-羟基吡啶 、 二正辛基二硫 在 叔丁基锂 、 碳酸氢钠 作用下， 以 四氢呋喃 、 正戊烷 、 水 为溶剂， 反应 3.5h， 以77%的产率得到3-hydroxy-2-pyridyl n-octyl sulfide
  参考文献：
  名称：

  Catalytic Chain-Breaking Pyridinol Antioxidants

  摘要：

  The synthesis of 3-pyridinols carrying alkyltelluro, alkylseleno, and alkylthio groups is described together with a detailed kinetic, thermodynamic, and mechanistic Study of their antioxidant activity. When assayed for their capacity to inhibit azo-initiated peroxidation of linoleic acid in a water/chlorobenzene two-phase system, tellurium-containing 3-pyridinols were readily regenerable by N-acetylcysteine contained in the aqueous phase. The best inhibitors quenched peroxyl radicals more efficiently than alpha-tocopherol, and the duration of inhibition was limited only by the availability of the thiol reducing agent. fn homogeneous phase, inhibition of styrene autoxidation absolute rate constants k(inh) for quenching of peroxyl radical were as large as 1 x 10(7) M-1 s(-1), thus Outperforming the best phenolic antioxidants including alpha-tocopherol. Tellurium-containing 3-pyridinols could be quantitatively regenerated in homogeneous phase by N-tert-butoxycarbonyl cysteine methyl ester, a lipid-soluble analogue of N-acetylcysteine. In the presence of an excess of the thiol, a catalytic mode of action was observed, similar to the one in the two-phase system. Overall, compounds bearing the alkyltelluro moiety ortho to the OH group were much more effective antioxidants than the corresponding para isomers. The origin of the high reactivity of these compounds was explored using pulse-radiolysis thermodynamic measurements, and a mechanism for their unusual antioxidant activity was proposed. The tellurium-containing 3-pyridinols were also found to catalyze reduction of hydrogen peroxide in the presence of thiol reducing agents, thereby acting as multifunctional (preventive and chain-breaking) catalytic antioxidants.

  DOI：

  10.1021/jo902226t