2-乙基-4-甲基咪唑-5-二硫代羧酸 | 84255-42-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 2-乙基-4-甲基咪唑-5-二硫代羧酸
• 英文名称: 2-ethyl-4-methylimidazole-5-dithiocarboxylic acid
• 英文别名: 2-Ethyl-5-methyl-1H-imidazole-4-carbodithioic acid
• CAS: 84255-42-5
• 化学式: C₇H₁₀N₂S₂
• mdl: MFCD00233371
• 分子量: 186.302
• InChiKey: WQKQGRXNHYXVAH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.428
• 拓扑面积：
  61.8
• 氢给体数：
  2
• 氢受体数：
  3

安全信息

• 海关编码：
  2933290090

反应信息

• 作为反应物：
  描述：

  2-乙基-4-甲基咪唑-5-二硫代羧酸 在 氢溴酸 作用下， 反应 0.33h， 以69%的产率得到
  参考文献：
  名称：

  A Synthesis and Structural Confirmation of 3,5-Bis(2-alkylimidazol-4-yl)-1,2,4-trithiolanes

  摘要：

  The structures of the 4-formylimidazole equivalents which were prepared by heating 2-alkyl-4-dithiocarboxylimidazoles with 47% HBr or conc. H2SO4 have been revised to be 3,5-bis(2-alkylimidazol-4-yl)-1,2,4-trithiolanes by X-ray crystallographic analyses.

  DOI：

  10.3987/com-93-6576
• 作为产物：
  描述：

  2-乙基-4-甲基咪唑 在 二硫化碳 、 sodium hydroxide 作用下， 以 二甲基亚砜 为溶剂， 以83%的产率得到2-乙基-4-甲基咪唑-5-二硫代羧酸
  参考文献：
  名称：

  Imidazole 4(5)-dithiocarboxylic acids or salts

  摘要：

  揭示了一种由以下通用式表示的咪唑-4(5)-二硫代羧酸化合物：##STR1## 其中R.sub.2代表氢原子或具有多达20个碳原子的一价碳氢基团，R.sub.4代表氢原子或具有多达4个碳原子的烷基基团，X代表氢原子或碱金属原子。这种化合物对银具有出色的防锈作用。该化合物是通过以下过程制备的：在溶剂存在下，将由以下通用式表示的咪唑化合物：##STR2## 其中R.sub.2和R.sub.4如上定义，与二硫代碳酸酯和碱金属氢氧化物反应，并在必要时使得得到的咪唑化合物酸化。

  公开号：

  US04394511A1

文献信息

• Imidazoles, their production and their use in preventing corrosion of silver
  申请人：SHIKOKU CHEMICALS CORPORATION

  公开号：EP0069443A1

  公开（公告）日：1983-01-12

  Imidazole-4(5)-dithiocarboxylic acid compounds represented by the following general formula: wherein R2 represents a hydrogen atom or a monovalent hydrocarbon group having up to 20 carbon atoms, R4 represents a hydrogen atom or an alkyl group having up to 4 carbon atoms, and X represents a hydrogen atom or an alkali metal atom; are useful for preventing corrosion of metallic silver.

  由以下通式表示的咪唑-4(5)-二硫代羧酸化合物：其中 R2 代表氢原子或最多具有 20 个碳原子的一价烃基，R4 代表氢原子或最多具有 4 个碳原子的烷基，X 代表氢原子或碱金属原子；这些化合物可用于防止金属银的腐蚀。
• Liquid crystalline polyester and method for producing the same
  申请人：Sumitomo Chemical Company, Limited

  公开号：EP1184401A1

  公开（公告）日：2002-03-06

  A method for producing a liquid crystalline polyester is provided which comprises the steps of acylating phenolic hydroxyl groups of an aromatic diol, an aromatic hydroxycarboxylic acid, or an aromatic diol and an aromatic hydroxycarboxylic acid with a fatty anhydride to obtain an acylated substance, and trans-esterifying said acylated substance with an aromatic dicarboxylic acid, an aromatic hydroxycarboxylic acid, or an aromatic dicarboxylic acid and an aromatic hydroxycarboxylic acid, wherein the acylation, the trans-esterification, or the acylation and trans-esterification is conducted in the presence of a heterocyclic organic base compound containing two or more nitrogen atoms.

  提供了一种生产液晶聚酯的方法，该方法包括以下步骤 将芳香族二元醇、芳香族羟基羧酸或芳香族二元醇和芳香族羟基羧酸的酚羟基与脂肪酸酐酰化，得到酰化物，以及 将所述酰化物质与芳香族二羧酸、芳香族羟基羧酸或芳香族二羧酸和芳香族羟基羧酸进行酯化反应、 其中酰化、反酯化或酰化和反酯化是在含有两个或两个以上氮原子的杂环有机碱化合物存在下进行的。
• Liquid crystalline polyester resin composition for a connector
  申请人：SUMITOMO CHEMICAL COMPANY, LIMITED

  公开号：US20030168634A1

  公开（公告）日：2003-09-11

  The object of the present invention is to provide a liquid crystalline polyester resin composition for connectors that is excellent in fluidity at the time of molding and is therefore capable of producing connectors with further suppressed degree of warpage. The object is achieved by providing a liquid crystalline polyester resin composition for connectors comprising a liquid crystalline polyester resin mixture which comprises a liquid crystalline polyester (A) having a specific flow beginning temperature and a liquid crystalline polyester resin (B) having a specific flow beginning temperature and the flow beginning temperature between the liquid crystalline polyester resin (A) and the liquid crystalline polyester resin (B) is from 20° C. to 60° C., and from 15 to 180 parts by weight of a fibrous and/or plate-shaped inorganic filler; wherein both of the liquid crystalline polyester resin (A) and the liquid crystalline polyester resin (B) are produced by the specific method.

  本发明的目的是提供一种用于连接器的液晶聚酯树脂组合物，该组合物在成型时具有极佳的流动性，因此能够生产出翘曲程度进一步降低的连接器。本发明的目的是通过提供一种用于连接器的液态结晶聚酯树脂组合物来实现的，该组合物由液态结晶聚酯树脂混合物组成，其中液态结晶聚酯（A）具有特定的起始流动温度，液态结晶聚酯树脂（B）具有特定的起始流动温度，液态结晶聚酯树脂（A）和液态结晶聚酯树脂（B）之间的起始流动温度为 20°C 至 60°C、以及 15 至 180 份（按重量计）的纤维状和/或板状无机填料；其中液态结晶聚酯树脂 (A) 和液态结晶聚酯树脂 (B) 均通过特定方法生产。
• Aromatic liquid-crystalline polyester film and metal laminated article
  申请人：SUMITOMO METAL MINING CO., LTD.

  公开号：US20040058137A1

  公开（公告）日：2004-03-25

  An aromatic liquid-crystalline polyester film having a low water absorbing property, and additionally, showing small linear expansion coefficient is provided by an aromatic liquid-crystalline polyester film comprising an aromatic liquid-crystalline polyester with a weight average molecular weight of 5000 to 100000, which comprises a structural unit of the following formula (I) derived from p-hydrozybenzoic acid: 1 a structural unit of the following formula (II) derived from hydroquinone, dihydroxybiphenyl: 2 (wherein, n represents 0 or 1), and a structural unit of the following formula (III) derived from naphthalenecarboxylic acid: 3 wherein each structural unit combines through ester-bonding.

  一种芳香族液晶聚酯薄膜具有较低的吸水性，而且线膨胀系数较小，该薄膜由芳香族液晶聚酯组成，芳香族液晶聚酯的重量平均分子量为 5000 至 100000，其结构单元如下式 (I)，由对氢苯甲酸衍生而来： 1 由对苯二酚、二羟基联苯衍生的下式（II）结构单元： 2 2 (其中，n 代表 0 或 1），以及由萘甲酸衍生的下式（III）结构单元： 3 其中，每个结构单元通过酯键结合。
• Aromatic polyester
  申请人：SUMITOMO CHEMICAL COMPANY, LIMITED

  公开号：US20030199627A1

  公开（公告）日：2003-10-23

  The present invention provides an aromatic polyester which is obtained by condensation polymerization reaction of terephthalic acid, 2,6-naphthalenedicarboxylic acid and acylated product obtained by acylation of parahydroxybenzoic acid and hydroquinone with fatty acid anhydride, wherein said aromatic polyester satisfy the following conditions (A) to (D), and the acylation and/or the condensation polymerization reaction are conducted in the presence of heterocyclic organic compound containing at least two nitrogen atoms: (A): Number of moles of a monomer unit derived from parahydroxybenzoic acid (UNIT (1)) is 54-62 moles per 100 moles of UNIT (1), a monomer unit derived from hydroquinone (UNIT (2)), a monomer unit derived from terephthalic acid (UNIT (3)) and a monomer unit derived from 2,6-naphthalenedicarboxylic acid (UNIT (4)) in total; (B): Number of moles of UNIT (2) is 19-23 moles per 100 moles of UNIT (1), UNIT (2), UNIT (3) and UNIT (4) in total; (C): The molar ratio of UNIT (3) and UNIT (4), which is represented by the following formula (I) is 0.23-0.35: [(3)]/{[(3)]+[(4)]}  (I) wherein [(3)] and [(4)] represent number of moles of respective UNIT (3) and UNIT (4); (D): Total number of moles of UNIT (3) and UNIT (4) is 0.95-1.05 moles per one mole of UNIT (2).