naphthalene-1,2,4,8-tetraol | 93674-92-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: naphthalene-1,2,4,8-tetraol
• 英文别名: Naphthalin-1,2,4,8-tetraol；1.2.4.8-Tetrahydroxy-naphthalin；Naphthalintetrol-(1.2.4.8)；Naphthalene-1,2,4,8-tetrol
• CAS: 93674-92-1
• 化学式: C₁₀H₈O₄
• 分子量: 192.171
• InChiKey: JNLWKNHLUVQHPV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  80.9
• 氢给体数：
  4
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  氯仿 、 naphthalene-1,2,4,8-tetraol 生成 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Wheeler; Carson, Journal of the American Chemical Society, 1927, vol. 49, p. 2828

  摘要：

  DOI：
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 sodium hydroxide 、 锌 作用下， 生成 naphthalene-1,2,4,8-tetraol
  参考文献：
  名称：

  Wheeler; Andrews, Journal of the American Chemical Society, 1921, vol. 43, p. 2585

  摘要：

  DOI：

文献信息

• NAPHTHOBISCHALCOGENADIAZOLE DERIVATIVE AND PRODUCTION METHOD THEREFOR
  申请人：OSAKA UNIVERSITY

  公开号：US20190337966A1

  公开（公告）日：2019-11-07

  In order to provide a naphthobischalcogenadiazole derivative that can be used as an intermediate for producing a naphthobischalcogenadiazole compound into which a fluorine atom has been introduced, the naphthobischalcogenadiazole derivative in accordance with an aspect of the present invention is represented by a formula (I): where each of A 1 and A 2 is independently an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; and each of X 1 and X 2 is independently a hydrogen atom, a halogen atom, a boronic acid group, a boronic acid ester group, a boronic acid diaminonaphthalene amide group, an N-methyliminodiacetic acid boronate group, a trifluoroborate salt group, or a triolborate salt group.

  为了提供一种可用作生产引入氟原子的萘基双硫/硒/碲-二唑化合物的中间体的萘基双硫/硒/碲-二唑衍生物，本发明的一个方面提供的萘基双硫/硒/碲-二唑衍生物由式(I)表示：其中，A1和A2分别独立地为氧原子、硫原子、硒原子或碲原子；X1和X2分别独立地为氢原子、卤素原子、硼酸基、硼酸酯基、硼酸二氨基萘酰胺基、N-甲基亚乙二酸硼酸酯基、三氟硼酸盐基或三羟基硼酸盐基。
• SCALE DEPOSIT INHIBITOR, PROCESS FOR ITS PRODUCTION, POLYMERIZER WHOSE INSIDE WALL IS COVERED WITH THE INHIBITOR, AND PROCESS FOR PRODUCTION OF VINYLIC POLYMERS BY THE USE OF THE POLYMERIZER
  申请人：Tokuyama Corporation

  公开号：EP1454919A1

  公开（公告）日：2004-09-08

  A scale adhesion preventing agent for use in a polymerization reactor, consisting essentially of a condensate of a phenol represented by the following formula (1), a 1-naphthol and an aldehyde, which is soluble in an alkaline aqueous solution: wherein R1 and R2 are the same or different and each a hydroxyl group, alkyl group having 1 to 8 carbon atoms, halogen atom, hydrogen atom, alkoxycarbonyl group whose alkyl moiety has 1 to 8 carbon atoms or phenyl group, with the proviso that a hydrogen atom is existent at at least two of ortho-positions and para-positions with respect to the hydroxyl group. When a vinyl-based monomer is to be polymerized using a polymerization reactor having a film of this scale adhesion preventing agent on the inner wall, the vinyl-based polymer can be produced by preventing the adhesion of a scale.

  一种用于聚合反应器的阻垢剂，主要由下式(1)代表的苯酚、1-萘酚和醛的缩合物组成，可溶于碱性水溶液： 其中 R1 和 R2 相同或不同，各自为羟基、具有 1 至 8 个碳原子的烷基、卤素原子、氢原子、烷基具有 1 至 8 个碳原子的烷氧羰基或苯基，但氢原子至少存在于羟基的正位和对位中的两个位置。 当乙烯基单体要使用聚合反应器进行聚合时，该反应器的内壁上有一层防止鳞片附着的薄膜，通过防止鳞片附着，可以生产出乙烯基聚合物。
• Scale deposit inhibitor, process for its production, polymerizer whose inside wall is covered with the inhibitor, and process for production of vinylic polymers by the use of the polymerizer
  申请人：——

  公开号：US20040077804A1

  公开（公告）日：2004-04-22

  A scale adhesion preventing agent for use in a polymerization reactor, consisting essentially of a condensate of a phenol represented by the following formula (1), a 1-naphthol and an aldehyde, which is soluble in an alkaline aqueous solution: 1 wherein R 1 and R 2 are the same or different and each a hydroxyl group, alkyl group having 1 to 8 carbon atoms, halogen atom, hydrogen atom, alkoxycarbonyl group whose alkyl moiety has 1 to 8 carbon atoms or phenyl group, with the proviso that a hydrogen atom is existent at at least two of ortho-positions and para-positions with respect to the hydroxyl group. When a vinyl-based monomer is to be polymerized using a polymerization reactor having a film of this scale adhesion preventing agent on the inner wall, the vinyl-based polymer can be produced by preventing the adhesion of a scale.

  一种用于聚合反应器的阻垢剂，主要由下式（1）代表的苯酚、1-萘酚和醛的缩合物组成，可溶于碱性水溶液： 1 其中 R 1 和 R 2 相同或不同，各自为羟基、具有 1 至 8 个碳原子的烷基、卤素原子、氢原子、其烷基具有 1 至 8 个碳原子的烷氧羰基或苯基，但氢原子至少存在于羟基的两个正位和对位上。 当乙烯基单体要使用聚合反应器进行聚合时，该反应器的内壁上有一层防止鳞片附着的薄膜，通过防止鳞片附着，可以生产出乙烯基聚合物。
• Purification and some Properties of two Isofunctional Juglone Hydroxylases from<i>Pseudomonas putida</i>J1
  作者：Hansjörg RETTENMAIER、Franz LINGENS

  DOI：10.1515/bchm3.1985.366.2.637

  日期：1985.1

  Juglone-induced cells of Pseudomonas putida J 1 were shown to contain two isofunctional juglone hydroxylases. Both enzymes were purified about 125-fold to homogeneity in polyacrylamide gel electrophoresis. The molecular masses of the native enzymes, as determined by Sephacryl S-200 gel filtration were 59 000 Da for enzyme 1 and 56 000 Da for enzyme 2. The molecular masses of the subunits were determined by dodecyl sulfate polyacrylamide gel electrophoresis as 25 000 Da (enzyme 1) and 23 500 Da (enzyme 2). Both enzymes hydroxylated juglone, naphthazarin, 1,4-naphthoquinone and 2-chloro-1,4-naphthoquinone, but they were completely inactive against naphtholes. The activity of both hydroxylases was not affected by chelating agents, thiol reagents, however, were found to be strong inhibitors. No external cofactors such as Fe2, NADH, NADPH, FAD, FMN were required for activity. Concomitant with the hydroxylation of juglone the consumption of oxygen in a molar ratio 2: 1 (juglone: oxygen) was observed but none of the enzymes incorporated 18O2 into the substrate juglone. By activity staining enzyme 1 was found to be present in induced and non-induced cells of P. putida J 1, enzyme 2, however, only in juglone-induced cells.
• US6894125B2
  申请人：——

  公开号：US6894125B2

  公开（公告）日：2005-05-17