2-(1-hydroxy-1-methylethyl)-3-methoxypyrazine | 38346-80-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 2-(1-hydroxy-1-methylethyl)-3-methoxypyrazine
• 英文别名: 2-(3-methoxy-pyrazinyl)-propan-2-ol；2-(1-Hydroxy-1-methylethyl)-3-methoxypyrazine；2-(3-methoxypyrazin-2-yl)propan-2-ol
• CAS: 38346-80-4
• 化学式: C₈H₁₂N₂O₂
• 分子量: 168.195
• InChiKey: YBXACVMNCAABPZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  55.2
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  2-甲氧基吡嗪 、 丙酮 在 正丁基锂 作用下， 以 乙醚 、 正己烷 为溶剂， 以23%的产率得到2-(1-hydroxy-1-methylethyl)-3-methoxypyrazine
  参考文献：
  名称：

  鉴定和合成由粘多糖的Chondromyces crocatus释放的挥发物

  摘要：

  通过闭环汽提分析或固相微萃取对琼脂平板上的粘液细菌Chondroyces crocatus进行分析。气味分布主要由吡嗪，倍半萜类化合物和一些芳香族化合物组成，总共有50多种成分。几种新的吡嗪类化合物，如2-（1-羟基-1-甲基乙基）-3-甲氧基吡嗪（9），2-（1-羟基-1-甲基丙基）-3-甲氧基吡嗪（10）和2-（1-羟基-除了几种已知的吡嗪以外，还鉴定出2-甲基丙基）-3-甲氧基吡嗪（11）。大多数样品中出现的主要吡嗪是2,5-双-（1-甲基乙基）吡嗪（3）。而众所周知的倍半萜类土臭素（1）含量低，大多数样品中都鉴定出相关化合物（1（10）E，5 E）-germacradien-11-ol（21）。以前从未从微生物中报道过的其他重要倍半萜类化合物是（6 S，10 S）-6,10-二甲基双环[4.4.0] dec-1-en-3-one（16），并伴有少量的几种衍生物。这些化合物的生物合成

  DOI：

  10.1016/j.tet.2004.03.005

文献信息

• TiO2 photocatalysis of 2-isopropyl-3-methoxy pyrazine taste and odor compound in aqueous phase: Kinetics, degradation pathways and toxicity evaluation
  作者：M. Antonopoulou、I. Konstantinou

  DOI：10.1016/j.cattod.2014.03.027

  日期：2015.2

  In recognition of the growing demand regarding the control of undesired taste and odor (T&O) problems in natural water resources, the photocatalytic degradation of 2-isopropyl-3 methoxy pyrazine (IPMP), a common metabolite of soil actinomycetes which contributes a rotten vegetable odor to water, was investigated under simulated solar irradiation. Under the studied conditions (C = 10 mg L-1, C-TiO2 = 100 mg L-1 and I = 600 W m(-2)), 95% of IPMP was removed within 20 min of irradiation. The reaction intermediates were completely mineralized to CO2 and the nitrogen was predominantly released as NH4+ ions after 240 min irradiation. The major transformation products of TiO2 photocatalysis of IPMP have been determined by the use of high resolution accurate liquid chromatography-orbitrap mass spectrometry as well as gas chromatography-mass spectrometry (GC-MS) techniques. Hydroxylation of the isopropyl and methoxy groups has been identified as the main reaction pathway. Scavenging experiments indicated the important role of HO center dot, h(+) and O-2(center dot-) in the photocatalytic process. Toxicity assessment revealed the efficiency of the photocatalytic treatment to achieve almost complete detoxification of the irradiated solution. (C) 2014 Elsevier B.V. All rights reserved.