4-(5-辛基嘧啶-2-基)苯酚 | 58415-63-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 中文名称: 4-(5-辛基嘧啶-2-基)苯酚
• 英文名称: 4-(5-octylpyrimidin-2-yl)phenol
• 英文别名: 5-octyl-2-(4-hydroxyphenyl)pyrimidine；4-(5-octylpyrimid-2-yl)phenol；2-(4'-hydroxyphenyl)-5-n-octyl-pyrimidine；2-(4-Hydroxyphenyl)-5-octylpyrimidine
• CAS: 58415-63-7
• 化学式: C₁₈H₂₄N₂O
• 分子量: 284.401
• InChiKey: QKHJFAHFTKYIEP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.6
• 重原子数：
  21
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  46
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-(5-辛基嘧啶-2-基)苯酚 在 potassium hydroxide 作用下， 以 二甲基亚砜 、 乙腈 为溶剂， 反应 132.17h， 生成 3-butyl-1-{8-[4-(5-octylpyrimidin-2-yl)phenoxy]octyl}imidazolium bromide
  参考文献：
  名称：

  Towards room temperature ionic liquid crystals: linear versus bent imidazolium phenylpyrimidines

  摘要：

  本文报道了具有介晶2-苯基嘧啶或2-烷基嘧啶羧酸中心核的新型咪唑鎓盐的合成及其介晶性质。介晶单元通过烷氧基间隔基与咪唑鎓头部基团相连。为了调节介晶性质，变化了烷氧基间隔基和末端烷基基团的长度、反离子、咪唑鎓头部基团的取代模式和分子几何形状（线性 vs. 弯曲），并使用差示扫描量热法（DSC）、偏光光学显微镜（POM）和 X 射线散射（WAXS，SAXS）详细研究了相应的化合物。对于含有短 N-取代基（R = CH3，C4H9）的咪唑鎓盐，观察到具有单层取向的 SmA 相，而含有较长 N-取代基（R = C12H25，C12H25OC6H4）的相应衍生物显示出双层取向的 SmA 相，无论其几何形状为线性或弯曲。对于两种衍生物 p-5(10,8) 和 p-5(12,8)，观察到 SmC 相。事实上，介晶核的弯曲导致介相向较低温度偏移。多个间位-2-苯基嘧啶衍生物以及 2-嘧啶羧酸盐显示出低于 50 °C 的熔点。对于 2-嘧啶羧酸盐，用三氟甲磺酸盐替换溴化物离子进一步降低了接近室温的熔融转变温度。

  DOI：

  10.1039/c2jm34595a
• 作为产物：
  描述：

  1,1-二甲氧基癸烷 在 sodium methylate 、 三氯氧磷 作用下， 以 甲醇 为溶剂， 反应 16.0h， 生成 4-(5-辛基嘧啶-2-基)苯酚
  参考文献：
  名称：

  Towards room temperature ionic liquid crystals: linear versus bent imidazolium phenylpyrimidines

  摘要：

  本文报道了具有介晶2-苯基嘧啶或2-烷基嘧啶羧酸中心核的新型咪唑鎓盐的合成及其介晶性质。介晶单元通过烷氧基间隔基与咪唑鎓头部基团相连。为了调节介晶性质，变化了烷氧基间隔基和末端烷基基团的长度、反离子、咪唑鎓头部基团的取代模式和分子几何形状（线性 vs. 弯曲），并使用差示扫描量热法（DSC）、偏光光学显微镜（POM）和 X 射线散射（WAXS，SAXS）详细研究了相应的化合物。对于含有短 N-取代基（R = CH3，C4H9）的咪唑鎓盐，观察到具有单层取向的 SmA 相，而含有较长 N-取代基（R = C12H25，C12H25OC6H4）的相应衍生物显示出双层取向的 SmA 相，无论其几何形状为线性或弯曲。对于两种衍生物 p-5(10,8) 和 p-5(12,8)，观察到 SmC 相。事实上，介晶核的弯曲导致介相向较低温度偏移。多个间位-2-苯基嘧啶衍生物以及 2-嘧啶羧酸盐显示出低于 50 °C 的熔点。对于 2-嘧啶羧酸盐，用三氟甲磺酸盐替换溴化物离子进一步降低了接近室温的熔融转变温度。

  DOI：

  10.1039/c2jm34595a

文献信息

• A synthetic strategy toward branched oligomesogenic phosphonic acids: comparison of alternative pathways
  作者：Maksym F. Prodanov、Olga V. Vashchenko、Valerii V. Vashchenko

  DOI：10.1016/j.tetlet.2013.11.022

  日期：2014.1

  This work is devoted to the elaboration of a practical scheme for the synthesis of dendritic derivatives of gallic acid containing a carboxylate-ω-alkylphosphonic acid group and three terminal promesogenic substituents. Two synthetic strategies toward the target compounds were examined that differ in the sequence of the introduction of the promesogenic units and ω-alkylphosphonic group.

  这项工作致力于阐述一种实用的方案，用于合成含有羧酸盐-ω-烷基膦酸基团和三个末端产前取代基的没食子酸的树枝状衍生物。研究了针对目标化合物的两种合成策略，它们在促生型单元和ω-烷基膦酸基团的引入顺序上有所不同。
• Unusual smectic phases organized by novel λ-shaped mesogenic molecules
  作者：Akihisa Yamaguchi、Isa Nishiyama、Jun Yamamoto、Hiroshi Yokoyama、Atsushi Yoshizawa

  DOI：10.1039/b406716a

  日期：——

  A homologous series of novel λ-shaped mesogenic compounds in which three mesogenic groups are connected to 3, 4-dihydroxybenzoic acid has been prepared and their physical properties investigated by means of optical microscopy, differential scanning calorimetry and X-ray diffraction measurements. The λ-shaped compounds studied showed unusual smectic phases. 4-Cyanobiphenyl-4′-yl 3,4-bis6-[4-(5-octylpyrimidin-2-yl)phenyloxy]hexyloxy}benzoate was found to realize an incommensurate SmA (SmAinc) phase. A “uniform planarly” aligned sample of 2-(4-octylphenyl)pyrimidin-5-yl 3,4-bis6-[4-(5-octylpyrimidin-2-yl)phenyloxy]hexyloxy} benzoate showed a Schlieren-like texture in the smectic phase. We discuss structural effects of the λ-shaped compounds on molecular organization in liquid-crystalline phases.

  已经制备了一组新型的λ形介晶化合物，其中三个介晶基团连接到3,4-二羟基苯甲酸，并通过光学显微镜、差示扫描量热法和X射线衍射测量研究了它们的物理性质。所研究的λ形化合物显示出异常的向列相。发现4-氰基联苯-4'-基-3,4-双6-[4-(5-辛基嘧啶-2-基)苯氧基]己氧基}苯甲酸酯实现了非公度SmA（SmAinc）相。2-(4-辛基苯基)嘧啶-5-基-3,4-双6-[4-(5-辛基嘧啶-2-基)苯氧基]己氧基}苯甲酸酯的“均匀平面”排列样品在向列相中显示出类似条纹的纹理。我们讨论了λ形化合物对液晶相中分子组织结构的结构效应。
• Formation of smectic and columnar liquid crystalline phases by cyclotriveratrylene (CTV) and cyclotetraveratrylene (CTTV) derivatives incorporating calamitic structural units
  作者：Ralph Lunkwitz、Carsten Tschierske、Siegmar Diele

  DOI：10.1039/a702034a

  日期：——

  Novel liquid crystalline oligomesogens, which consist of five, six or eight calamitic 4-cyanobiphenyl, 2-alkyl-5-phenyl-1,3,4-thiadiazole or 5-octyl-2-phenylpyrimidine units covalently linked by spacers of different length with a cyclotribenzylene central core (CTV derivatives, 2,3,7,8,12,13-hexa-substituted 10,15-dihydro-5H-tribenzo[a,d,g]cyclononenes) or a cyclotetrabenzylene central core (CTTV derivatives, 2,3,6,7,10,11,14,15-octa-substituted 5,10,15,20-tetrahydrotetrabenzo[a,d,g,j]cyclododecenes) have been synthesized. These compounds were investigated by polarizing microscopy, differential scanning calorimetry and some of them were also studied by X-ray diffraction. Many of the CTV derivatives show liquid crystalline properties. The cyanobiphenyl derivatives incorporating long spacer units have enantiotropic SA phases which can easily be supercooled. The thiadiazole derivatives and the pyrimidine derivatives have liquid crystalline phases only if the spacer units are rather short. Thiadiazole derivatives with an odd number of connecting atoms between the CTV core and the calamitic mesogens form SA phases, whereas those with even-numbered spacers display columnar mesophases. We propose that the columnar mesophases observed for these oligomesogens do not result from their ability to adopt a nearly disc-like shape. Instead, they represent ribbon phases which result from a steric frustration caused by the different space filling of the central cone-like core and the rod-like mesogenic groups. A chevron-like (banana-like) average shape of the molecules with even-numbered spacers is assumed to be responsible for the formation of the ribbon phases.Also a CTTV derivative with eight appended phenylthiadiazole mesogens displays a columnar mesophase. A nematic phase was found for the corresponding cyanobiphenyl derivative, whereas the pyrimidine derivative is not liquid crystalline.

  新型的液晶寡聚介质，由五个、六个或八个 calamitic 4-氰基联苯、2-烷基-5-苯基-1,3,4-噻二唑或5-辛基-2-苯基嘧啶单元通过不同长度的间隔基与一个环三苯基中心核(CTV衍生物,2,3,7,8,12,13-六取代的10,15-二氢-5H-三苯并[a,d,g]环壬烯)或一个环四苯基中心核(CTTV衍生物,2,3,6,7,10,11,14,15-八取代的5,10,15,20-四氢四苯并[a,d,g,j]环十二碳四烯)共价连接而成，已被合成。这些化合物通过偏光显微镜、差示扫描量热法进行研究，其中一些还通过X射线衍射进行了研究。许多CTV衍生物显示出液晶性质。含长间隔基单元的氰基联苯衍生物具有固-液同质相(SA相)，可以很容易地过冷。噻二唑衍生物和嘧啶衍生物只有在间隔基单元相当短时才具有液晶相。噻二唑衍生物在CTV核与calamitic介质之间具有奇数连接原子时形成SA相，而具有偶数间隔基的噻二唑衍生物则显示柱状液晶相。我们提出，这些寡聚介质观察到的柱状液晶相并非因其能形成近似圆盘状的形态，而是代表带状相，这是由中心锥状核和棒状介质基团的不同空间填充引起的立体障碍造成的。假定具有偶数间隔基的分子呈现类似曲折(香蕉状)的平均形状，是形成带状相的原因。此外，一个具有八个附加苯基噻二唑介质的CTTV衍生物显示柱状液晶相。相应的氰基联苯衍生物发现有向列相，而嘧啶衍生物则不具有液晶性。
• Nickel- and Palladium-Catalyzed Cross-Coupling Reactions at the Bridgehead of Bicyclo[1.1.1]pentane Derivatives - A Convenient Access to Liquid Crystalline Compounds Containing Bicyclo[1.1.1]pentane Moieties
  作者：Matthias Messner、Sergei I. Kozhushkov、Armin de Meijere

  DOI：10.1002/1099-0690(200004)2000:7<1137::aid-ejoc1137>3.0.co;2-2

  日期：2000.4

  Pd(PPh3)4, or PdCl2(dppf) catalysis to give a number of 1,3-disubstituted bicyclo[1.1.1]pentyl derivatives 17, 20, and 23, several of which exhibit liquid crystalline properties, in moderate to very good yields. The coupling products 20ca, 23ab, 23ae, 23ff, and 23fg have been further transformed to yield bicyclo[1.1.1]pentyl derivatives 32, 24ab, 24ae, 27ff, and 27fg, respectively, bearing alkynyl, cyano

  有机碘化物 7a-s 在 [1.1.1] 推进烷 (2) 上的自由基加成反应，然后是卤素-锂交换和与氯化锌的金属转移，以及将格利雅试剂添加到 2，提供了各种 3-取代双环[1.1.1]pentyl-1-magnesium (14) 和-zinc (19) 衍生物。后者在 NiCl2dppe、Pd(PPh3)4 或 PdCl2(dppf) 催化下与各种烯基、芳基和联芳基卤化物和三氟甲磺酸酯偶联，得到许多 1,3-二取代的双环 [1.1.1] 戊基衍生物 17 、20和23，其中一些表现出液晶性质，产率中等至非常好。偶联产物 20ca、23ab、23ae、23ff 和 23fg 已进一步转化为双环 [1.1.1] 戊基衍生物 32、24ab、24ae、27ff 和 27fg，分别带有炔基、氰基和/或烯基.
• Kinetically induced intermolecular association: unusual enthalpy changes in the nematic phase of a novel dimeric liquid-crystalline moleculeElectronic supplementary information (ESI) available: photomicrographs of the nematic phase formed by BOPPHB on cooling, X-ray diffraction patterns and DSC thermograms. See http://www.rsc.org/suppdata/cc/b2/b204901p/
  作者：Atsushi Yoshizawa、Akihisa Yamaguchi

  DOI：10.1039/b204901p

  日期：2002.9.11

  A novel dimeric liquid-crystalline molecule in which two mesogenic groups are connected via catechol was found to have smectic-like layer ordering in the nematic phase, and unusual enthalpy changes were observed in the nematic phase on heating from the monotropic smectic C phase.

  一种新型的二聚体液晶分子，其中两个介晶组通过邻苯二酚连接，在向列相中发现具有类层状的排列，并且在从单斜层相加热到向列相时观察到异常的焓变。