4-ethyl-1,1’:4',1"-terphenyl | 17800-48-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-ethyl-1,1’:4',1"-terphenyl
• 英文别名: 4-ethyl-1,1':4',1''-terphenyl；4-Aethyl-p-terphenyl；4-ethyl-[1,1';4',1"]terphenyl；4-Ethyl-1,1':4',1''-terphenyl；1-ethyl-4-(4-phenylphenyl)benzene
• CAS: 17800-48-5
• 化学式: C₂₀H₁₈
• 分子量: 258.363
• InChiKey: KVFMOENGKRIRDD-UHFFFAOYSA-N

物化性质

• 沸点：
  420.3±25.0 °C(Predicted)
• 密度：
  1.021±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.4
• 重原子数：
  20
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  4-ethyl-1,1’:4',1"-terphenyl 在 ruthenium trichloride 、 TEA 、 水 作用下， 以 甲醇 为溶剂， 反应 6.0h， 生成 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Photocatalysis of oligo(p-phenylenes): photoreductive production of hydrogen and ethanol in aqueous triethylamine

  摘要：

  Oligo(p-phenylenes) (OPP-n), p-terphenyl (OPP-3) to p-sexiphenyl (OPP-6), catalyze water-reductive H2 formation and reduction of concomitantly formed acetaldehyde to ethanol upon irradiation of heterogeneous suspensions in aqueous organic solution in the presence of triethylamine (TEA) and RuCl3. Colloidal Ru0 is photoformed in situ to work as an electron relay. The activity of OPP-n increases with the number of phenylene units except for the cases of OPP-3 and of the alkylated derivatives, where the net photocatalytic activities are higher, mainly due to the effective homogeneous catalysis, since their solubilities in the solvents employed are significantly larger. The homogeneous photocatalysis of OPP-3 leads not only to H2 evolution but also to effective formation of ethanol in the absence of colloidal Ru0, being accompanied by photo-Birch reduction of OPP-3. Dynamics studies of OPP-3 reveal that photocatalysis should be initiated by formation of the excited singlet state of OPP-3 (1OPP-3*), which is reductively quenched by TEA at a rate controlled by diffusion to produce the OPP-3 radical anion (OPP-3.-) and the TEA radical cation (TEA.+). From laser flash photolysis and pulse radiolysis experiments, it is concluded that electron transfer from OPP-3.- leads to effective reduction of water to H2 catalyzed by Ru0 colloid. Furthermore, it is confirmed that OPP-3.- gives electrons directly to acetaldehyde without any electron relays like colloidal metals, resulting in the formation of ethanol. During photocatalysis, OPP-3 itself undergoes photo-Birch reduction to some extent.

  DOI：

  10.1021/j100168a018
• 作为产物：
  描述：

  4-acetyl-p-terphenyl 在 一水合肼 、 potassium hydroxide 作用下， 以 乙二醇二甲醚 为溶剂， 以91 %的产率得到4-ethyl-1,1’:4',1"-terphenyl
  参考文献：
  名称：

  对三联苯支架的结构定制：迈向先进的塑料闪烁体

  摘要：

  使用简便的合成方法（Suzuki-Miyaura 和 Friedel-Crafts 反应）设计并制备了一系列全面的十五种对三联苯衍生物。各种烷基、烷氧基或三氟甲基已连接到对三联苯上以获得对称和不对称衍生物。对称性破缺可以提高单取代衍生物的溶解度。热分析揭示了几种晶相的可逆形成和非常高的热稳定性。通过循环伏安法记录受取代基的电子和空间效应影响的母体对三联苯π-系统的还原和氧化。与父p相比-三联苯，已对大多数制备的衍生物测量/计算了狭窄的 HOMO-LUMO 能隙。吸收和发射最大值范围分别为 286 至 293 和 341-360 nm。后者受取代的影响更为显着，荧光量子产率在0.52~0.75范围内。测量到高达 6400 cm -1 的斯托克斯位移，表明激发时发生大的结构重排（平面化）。PTP衍生物进一步用作闪烁的初级和次级发光体。4-甲基-p事实证明，-三联苯是一种合成简单、分离容易、溶解

  DOI：

  10.1016/j.dyepig.2023.111593

文献信息

• Agro-Waste Generated Pd/CAP-Ash Catalyzed Ligand-Free Approach for Suzuki–Miyaura Coupling Reaction
  作者：Rupesh C. Patil、Ashutosh A. Jagdale、Uttam P. Patil、Jeevan S. Ghodake、Sawanta S. Mali、Chang K. Hong、Suresh S. Patil

  DOI：10.1007/s10562-021-03597-6

  日期：2021.12

  Peels (CAP) to ash via thermal treatment, on which Pd(OAc)2 was immobilized easily that produced a low-cost, highly efficient Pd/CAP-ash catalyst. The prepared catalyst was fully characterized by using FT-IR, SEM, EDX, XRF, DSC-TGA, BET, HR-TEM, and XPS techniques. The Pd/CAP-ash catalyst was conveniently applied for the Suzuki–Miyaura coupling reaction under external base free and ligand-free conditions

  摘要 我们通过热处理将农业废弃物奶油苹果皮 (CAP) 转化为灰分，在其上轻松固定 Pd(OAc)2，从而生产出低成本、高效的 Pd/CAP 灰分催化剂。通过使用 FT-IR、SEM、EDX、XRF、DSC-TGA、BET、HR-TEM 和 XPS 技术对制备的催化剂进行了全面表征。Pd/CAP-ash 催化剂可方便地应用于 Suzuki-Miyaura 偶联反应，在无外部碱和无配体的条件下，在水-有机溶剂中以良好到优异的产率生产联苯。我们协议的主要吸引力是钯支持的农业废物材料的应用，该材料易于回收和回收，可在较短的反应时间内提供单和双偶联衍生物。 图形摘要
• Catalytic π–π Interactions Triggered Photoinduced Synthesis of Biaryls
  作者：Vishal Jyoti Roy、Janardan Chakraborty、Sudipta Raha Roy

  DOI：10.1021/acs.orglett.3c03806

  日期：——

  A highly regioselective photocatalytic method to access a variety of biaryl motifs under metal-free conditions has been developed. The organophotocatalyst is involved in π–π stacking interactions with the alkyne species, which promotes this photocatalytic process with thiophene. Mechanistic studies have shed light on these interactions and the overall process. Along with a broad functional-group tolerance

  已经开发出一种在无金属条件下获取各种联芳基图案的高度区域选择性光催化方法。有机光催化剂参与与炔烃的π-π堆积相互作用，从而促进了与噻吩的光催化过程。机理研究揭示了这些相互作用和整个过程。除了广泛的官能团耐受性和出色的区域选择性外，该方案已用于药物和其他天然产物的后期功能化。
• Colonge,J. et al., Bulletin de la Societe Chimique de France, 1967, p. 4370 - 4374
  作者：Colonge,J. et al.

  DOI：——

  日期：——
• Polymerisation Initiator
  申请人：Merck Patent GmbH

  公开号：EP1388538B1

  公开（公告）日：2010-09-01
• Photocatalysis of oligo(p-phenylenes): photoreductive production of hydrogen and ethanol in aqueous triethylamine
  作者：Shinjiro Matsuoka、Hiroyuki Fujii、Taisuke Yamada、Chyongjin Pac、Akito Ishida、Setsuo Takamuku、Mitsuhiro Kusaba、Nobuaki Nakashima、Shozo Yanagida

  DOI：10.1021/j100168a018

  日期：1991.7

  Oligo(p-phenylenes) (OPP-n), p-terphenyl (OPP-3) to p-sexiphenyl (OPP-6), catalyze water-reductive H2 formation and reduction of concomitantly formed acetaldehyde to ethanol upon irradiation of heterogeneous suspensions in aqueous organic solution in the presence of triethylamine (TEA) and RuCl3. Colloidal Ru0 is photoformed in situ to work as an electron relay. The activity of OPP-n increases with the number of phenylene units except for the cases of OPP-3 and of the alkylated derivatives, where the net photocatalytic activities are higher, mainly due to the effective homogeneous catalysis, since their solubilities in the solvents employed are significantly larger. The homogeneous photocatalysis of OPP-3 leads not only to H2 evolution but also to effective formation of ethanol in the absence of colloidal Ru0, being accompanied by photo-Birch reduction of OPP-3. Dynamics studies of OPP-3 reveal that photocatalysis should be initiated by formation of the excited singlet state of OPP-3 (1OPP-3*), which is reductively quenched by TEA at a rate controlled by diffusion to produce the OPP-3 radical anion (OPP-3.-) and the TEA radical cation (TEA.+). From laser flash photolysis and pulse radiolysis experiments, it is concluded that electron transfer from OPP-3.- leads to effective reduction of water to H2 catalyzed by Ru0 colloid. Furthermore, it is confirmed that OPP-3.- gives electrons directly to acetaldehyde without any electron relays like colloidal metals, resulting in the formation of ethanol. During photocatalysis, OPP-3 itself undergoes photo-Birch reduction to some extent.