2-Cyclohexyl-3-methylpyrazin | 32184-52-4

• 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-Cyclohexyl-3-methylpyrazin
• 英文别名: 2-cyclohexyl-3-methyl-pyrazine；2-Cyclohexyl-3-methylpyrazine
• CAS: 32184-52-4
• 化学式: C₁₁H₁₆N₂
• 分子量: 176.261
• InChiKey: UAFSPRHLXUPMQN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

文献信息

• Process for preparing isocyanates
  申请人：MONSANTO COMPANY

  公开号：EP0566555A2

  公开（公告）日：1993-10-20

  A process for preparing isocyanates comprising (a) contacting carbon dioxide and a primary amine in the presence of an aprotic organic solvent and an organic, nitrogenous base to produce the corresponding ammonium carbamate salt, and (b) reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent to produce the corresponding isocyanate. A second embodiment comprises recovering the ammonium carbamate salt of step (a) prior to reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent in the presence of an aprotic organic solvent and an organic, nitrogenous base.

  一种制备异氰酸酯的工艺，包括(a)在壬烷有机溶剂和有机含氮碱存在下，使 二氧化碳和伯胺接触，生成相应的氨基甲酸铵盐；(b)使氨基甲酸铵盐与亲电或亲氧脱 水剂反应，生成相应的异氰酸酯。第二个实施方案包括在氨基甲酸铵盐与亲电或亲氧脱水剂在钝态有机溶剂和有机含氮碱存在下反应之前，回收步骤（a）的氨基甲酸铵盐。
• SEMI-AROMATIC POLYAMIDE RESIN
  申请人：KURARAY CO., LTD.

  公开号：EP1860134A1

  公开（公告）日：2007-11-28

  A semi-aromatic polyamide resin is provided which has a high level of residence stability, hot-water resistance and chemical resistance and is also excellent in adhesive properties and compatibility with other resins and the like. The semi-aromatic polyamide resin comprises: dicarboxylic acid units in which 50 to 100 mol% of the dicarboxylic acid units are aromatic dicarboxylic acid units; and diamine units in which 60 to 100 mol% of the diamine units are aliphatic diamine units having 9 to 13 carbon atoms. Furthermore, at least 10% of terminal groups of molecular chains of the polyamide resin are blocked with a terminal-blocking agent, and the amount of terminal amino groups of the molecular chains is 60 µeq/g or more and 120 µeq/g or less. In addition, [NH2] / [COOH] ≥ 6 is satisfied, where [NH2] (µeq/g) represents the amount of the terminal amino groups and [COOH] (µeq/g)represents the amount of terminal carboxyl groups.

  本发明提供了一种半芳香族聚酰胺树脂，它具有高度的居住稳定性、耐热水性和耐化学性，同时还具有优异的粘合性以及与其他树脂等的相容性。 半芳香族聚酰胺树脂包括 二羧酸单元，其中 50-100 摩尔的二羧酸单元为芳香族二羧酸单元；以及二胺单元，其中 60-100 摩尔的二胺单元为具有 9-13 个碳原子的脂肪族二胺单元。此外，聚酰胺树脂分子链中至少 10%的末端基团被末端封端剂封端，分子链中末端氨基的含量为 60 微微克/克或以上，120 微微克/克或以下。此外，[NH2]/[COOH]≥6，其中[NH2]（µeq/g）代表末端氨基的量，[COOH]（µeq/g）代表末端羧基的量。
• Verfahren zur Herstellung von aromatischen Aminen
  申请人：Bayer MaterialScience AG

  公开号：EP1935871A2

  公开（公告）日：2008-06-25

  Die Erfindung betrifft ein Verfahren zur katalytischen Hydrierung von Nitroaromaten und der destillativen Aufarbeitung der dabei anfallenden wässrigen Aminlösungen. Bei diesem Verfahren kann energieeffizient sowohl das Amin von Wasser weitgehend befreit als auch das Wasser Amin-und Leichtsieder-frei erhalten als auch die Leichtsieder gewonnen werden.

  本发明涉及一种硝基芳烃催化加氢和对所得胺水溶液进行蒸馏处理的工艺。在这一工艺中，既能以节能的方式从水中释放出大部分胺，又能获得不含胺和低沸点的水，还能回收低沸点的水。
• POLYAMIDE RESIN, PREPARATION METHOD THEREFOR, AND MOLDED PRODUCT INCLUDING SAME
  申请人：Cheil Industries Inc.

  公开号：EP2940057A1

  公开（公告）日：2015-11-04

  The polyamide resin of the present invention is a polyamide resin containing an amine group and a carboxyl group, wherein the amine group concentration is about 200 to 300 µeq/g and two to six times as high as the carboxyl group concentration. The polyamide resin has excellent long-thermal stability.

  本发明的聚酰胺树脂是一种含有胺基和羧基的聚酰胺树脂，其中胺基浓度约为 200 至 300 µeq/g，是羧基浓度的 2 至 6 倍。这种聚酰胺树脂具有优异的长热稳定性。
• MONO-ALKYLATED DIAMINES FOR EPOXY FORMULATIONS: NOVEL CURING AGENTS FOR EPOXY SYSTEMS
  申请人：Evonik Operations GmbH

  公开号：EP3680270A1

  公开（公告）日：2020-07-15

  The present invention relates to an epoxy resin system containing an epoxy resin and a mono-alkylated diamine. The epoxy resin system can further contain a second amine. The present invention also relates to a method for producing an epoxy resin system comprising combining an epoxy resin with a mono-alkylated diamine. The mono-alkylated diamines of this invention enhance desirable processing and cured properties of epoxy resin compositions without the negative impact on mechanical properties in the cured product normally seen with cycloaliphatic amine-based curing agents.

  本发明涉及一种含有环氧树脂和单烷基二胺的环氧树脂体系。环氧树脂体系可进一步含有第二胺。本发明还涉及一种生产环氧树脂体系的方法，包括将环氧树脂与单烷基化二胺混合。本发明的单烷基化二胺可提高环氧树脂组合物的理想加工和固化性能，而不会像环脂族胺类固化剂那样对固化产品的机械性能产生负面影响。