1,3,5,8-tetrabromonaphthalene | 858459-26-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 1,3,5,8-tetrabromonaphthalene
• 英文别名: 1,3,5,8-Tetrabrom-naphthalin
• CAS: 858459-26-4
• 化学式: C₁₀H₄Br₄
• 分子量: 443.758
• InChiKey: QVWVCIZBGCUEGY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.9
• 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：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  1,5-二溴萘 在 四氯化碳 、 溴 、 铁粉 作用下， 生成 1,3,5,8-tetrabromonaphthalene
  参考文献：
  名称：

  Salkind; Belikowa, Chemische Berichte, 1931, vol. 64, p. 955,959

  摘要：

  DOI：

文献信息

• Lifetime prediction of laser-precracked fused silica subjected to subsequent cyclic laser pulses
  作者：Faiz Dahmani、Ansgar W. Schmid、John C. Lambropoulos、Stephen J. Burns、Semyon Papernov

  DOI：10.1557/jmr.2000.0167

  日期：2000.5

  Measurements of fatigue failure strength of laser-cracked fused silica in air at room temperature for different numbers of laser shots and laser fluences are presented. The failure-strength variability is found to be due mainly to the spectrum of crack depths. Agreement with theory suggests the incorporation of a residual term into the failure–strength equation. Due to its sign, the residual stress is of mouth-opening displacement nature at the crack. Analysis of the residual stress data shows a linear proportionality with crack depth, whereas the failure–strength is inversely proportional to the square root of the crack depth.

  本文介绍了室温下不同激光发射次数和激光通量下空气中激光裂纹熔融石英的疲劳破坏强度测量结果。结果发现，失效强度的变化主要是由裂纹深度谱造成的。与理论一致的结论表明，应在破坏强度方程中加入残余项。根据其符号，残余应力在裂缝处具有张口位移的性质。对残余应力数据的分析表明，残余应力与裂纹深度成线性比例，而破坏强度与裂纹深度的平方根成反比。
• Process for production of vinyl chloride polymer
  申请人：Shin-Etsu Chemical Co., Ltd.

  公开号：EP0172427A2

  公开（公告）日：1986-02-26

  This process is a process for production of a vinyl chloride polymer by suspension polymerization or emulsion polymerization of vinyl chloride monomer or a mixture of vinyl chloride monomer with a vinyl monomer copolymerizable with said vinyl chloride monomer in an aqueous medium, characterized in that the polymerization is carried out in a polymerizer, the inner wall surface and portions of the auxiliary equipment thereof which may come into contact with the monomer during polymerization being previously coated with a scaling preventive comprising at least one selected from dyes, pigments and aromatic or heterocyclic compounds having at least 5 conjugated π bonds, while controlling the chloride ion concentration in the reaction mixture to not higher than 100 ppm. According to said process, scaling onto the inner wall surface of a polymerizer, etc. during polymerization can be prevented effectively and surely.

  该工艺是通过氯乙烯单体或氯乙烯单体与可与所述氯乙烯单体共聚的乙烯基单体混合物在水介质中进行悬浮聚合或乳液聚合来生产氯乙烯聚合物的工艺，其特征在于聚合是在聚合器中进行的、内壁表面及其辅助设备中可能在聚合过程中与单体接触的部分事先涂上一层防垢剂，该防垢剂至少包括一种选自染料、颜料和至少有 5 个共轭 π 键的芳香族或杂环化合物的防垢剂，同时控制反应混合物中的氯离子浓度不高于 100 ppm。根据上述工艺，可有效、可靠地防止聚合过程中聚合器等内壁表面结垢。
• 10.1021/acs.joc.4c00507
  作者：Iwai, Kento、Nishiwaki, Nagatoshi

  DOI：10.1021/acs.joc.4c00507

  日期：——

  affording 1,7-dibromonaphthalene upon treatment with trifluoromethanesulfonic acid (halogen dance reaction). For 1,4,5,8-tetrabromonaphthalene, stepwise 1,2-rearrangements proceeded successively to furnish 1,3,5,7-tetrabromonaphthalene. Density functional theory calculations suggest that this reaction is initiated by ipso-protonation, with a subsequent 1,2-rearrangement occurring via the bromonium

  开发了一种简单而强大的工具，用于通过萘环的不对称化来制备罕见的溴代芳烃。 1,8-二溴萘的邻溴基团之间的空间排斥使萘环变形，从而允许非电子激活。环畸变促进溴基团的 1,2-重排，用三氟甲磺酸处理后得到 1,7-二溴萘（卤素舞反应）。对于1,4,5,8-四溴萘，连续进行逐步1,2-重排以提供1,3,5,7-四溴萘。密度泛函理论计算表明，该反应是由原质子化引发的，随后通过溴过渡态发生 1,2-重排。利用1,7-二溴萘的特征是两个以60°角排列的C-Br键，合成了包含52元环网络的独特金属有机骨架。
• Salkind; Belikowa, Chemische Berichte, 1931, vol. 64, p. 955,959
  作者：Salkind、Belikowa

  DOI：——

  日期：——
• US4757124A
  申请人：——

  公开号：US4757124A

  公开（公告）日：1988-07-12