2-(2,4-二甲氧基苯基)吡啶 | 98061-24-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 中文名称: 2-(2,4-二甲氧基苯基)吡啶
• 英文名称: 2-(2,4-dimethoxyphenyl)pyridine
• CAS: 98061-24-6
• 化学式: C₁₃H₁₃NO₂
• 分子量: 215.252
• InChiKey: SUCRXPISVHPSRD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  31.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(2,4-二甲氧基苯基)吡啶 在 四丁基溴化铵 、 吡啶盐酸盐 、 potassium carbonate 、 potassium iodide 作用下， 以 丁酮 为溶剂， 反应 7.0h， 生成 2-(pyridin-2-yl)-5-(thien-3-ylmethoxy)phenol
  参考文献：
  名称：

  Selective Endothelin A Receptor Antagonists. 3. Discovery and Structure−Activity Relationships of a Series of 4-Phenoxybutanoic Acid Derivatives

  摘要：

  The third in this series of papers describes our further progress into the discovery of a potent and selective endothelin A (ETA) receptor antagonist for the potential treatment of diseases in which a pathophysiological role for endothelin has been implicated. These include hypertension, ischemic diseases, and atherosclerosis. In earlier publications we have outlined the discovery and structure-activity relations of two moderately potent series of nonpeptide ETA receptor antagonists. In this paper, we describe how a pharmacophore model for ETA receptor binding was developed which enabled these two series of compounds to be merged into a single class of 4-phenoxybutanoic acid derivatives. The subsequent optimization of in vitro activity against the ETA receptor led to the discovery of (R)-4-[2-cyano-5-(3-pyridylmethoxy)phenoxy]-4-(2-methylphenyl)butanoic acid (12m). This compound exhibits low-nanomolar binding to the ETA receptor and a greater than 1000-fold selectivity over the ETB receptor. Data are presented to demonstrate that 12m is orally bioavailable in the rat and is a functional antagonist in vitro and in vivo of ET-1-induced vasoconstriction.

  DOI：

  10.1021/jm9707131
• 作为产物：
  描述：

  2-溴吡啶 、 2,4-二甲氧基溴苯 在 (Ph₃P)PdCl₂ 、 碘 、 magnesium 作用下， 生成 2-(2,4-二甲氧基苯基)吡啶
  参考文献：
  名称：

  Selective Endothelin A Receptor Antagonists. 3. Discovery and Structure−Activity Relationships of a Series of 4-Phenoxybutanoic Acid Derivatives

  摘要：

  The third in this series of papers describes our further progress into the discovery of a potent and selective endothelin A (ETA) receptor antagonist for the potential treatment of diseases in which a pathophysiological role for endothelin has been implicated. These include hypertension, ischemic diseases, and atherosclerosis. In earlier publications we have outlined the discovery and structure-activity relations of two moderately potent series of nonpeptide ETA receptor antagonists. In this paper, we describe how a pharmacophore model for ETA receptor binding was developed which enabled these two series of compounds to be merged into a single class of 4-phenoxybutanoic acid derivatives. The subsequent optimization of in vitro activity against the ETA receptor led to the discovery of (R)-4-[2-cyano-5-(3-pyridylmethoxy)phenoxy]-4-(2-methylphenyl)butanoic acid (12m). This compound exhibits low-nanomolar binding to the ETA receptor and a greater than 1000-fold selectivity over the ETB receptor. Data are presented to demonstrate that 12m is orally bioavailable in the rat and is a functional antagonist in vitro and in vivo of ET-1-induced vasoconstriction.

  DOI：

  10.1021/jm9707131

文献信息

• Selective C–O Bond Reduction and Borylation of Aryl Ethers Catalyzed by a Rhodium–Aluminum Heterobimetallic Complex
  作者：Rin Seki、Naofumi Hara、Teruhiko Saito、Yoshiaki Nakao

  DOI：10.1021/jacs.1c03038

  日期：2021.5.5

  We report the catalytic reduction of a C–O bond and the borylation by a rhodium complex bearing an X-type PAlP pincer ligand. We have revealed the reaction mechanism based on the characterization of the reaction intermediate and deuterium-labeling experiments. Notably, this novel catalytic system shows steric-hindrance-dependent chemoselectivity that is distinct from conventional Ni-based catalysts

  我们报道了带有X型PAlP钳形配体的铑配合物催化C-O键的催化还原和硼化。我们已经基于反应中间体的表征和氘标记实验揭示了反应机理。值得注意的是，这种新颖的催化体系显示出与空间位阻相关的化学选择性，这不同于传统的基于镍的催化剂，并提出了一种通过异双金属催化选择性激活C-O键的新策略。
• Palladium-Catalyzed Trifluoromethylthiolation of Aryl C–H Bonds
  作者：Chunfa Xu、Qilong Shen

  DOI：10.1021/ol5006533

  日期：2014.4.4

  A method for monotrifluoromethylthiolation of arenes via palladium-catalyzed directed C–H bond activation was described. The reaction was compatible with a variety of functional groups. Initial mechanistic studies disclosed that the turnover limiting step of the catalytic cycle did not involve C–H activation.

  描述了一种通过钯催化的直接CH键键合活化芳烃的单三氟甲基硫醇化方法。该反应与多种官能团相容。最初的机理研究表明，催化循环的周转限制步骤不涉及C–H活化。
• Substituted phenyl compounds
  申请人：Rhone-Poulenc Rorer Limited

  公开号：US06211234B1

  公开（公告）日：2001-04-03

  Compounds of formula (I) are described wherein R1 is hydrogen, -(lower alkyl)q(CO2R6 or OH), —CN, —C(R7)═NOR8, NO2, —O(lower alkyl)R9, —C≡C—R10, —CR11═C(R12)(R13), —C(═O)CH2C(═O)CO2H, —CO(R14), alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, thiocarbamoyl, substituted carbamoyl, substituted thiocarbamoyl, sulphamoyl or an optionally substituted nitrogen-containing ring, m, n, o and p are independently zero or 1 and R2, R3, R4 and R5 are various groups; and physiologically acceptable salts, N-oxides and prodrugs thereof. The compounds have endothelin antagonist activity and are useful as pharmaceuticals.

  式(I)的化合物描述如下，其中R1为氢，-(较低烷基)q(CO2R6或OH)，—CN，—C(R7)HNOR8，NO2，—O(较低烷基)R9，—C≡C—R10，—CR11CH(R12)(R13)，—C(O)CH2C(O)CO2H，—CO(R14)，烷基硫醚，烷基亚砜基，烷基磺酰基，氨基甲酰基，硫代氨基甲酰基，取代的氨基甲酰基，取代的硫代氨基甲酰基，磺酰胺基或可选择取代的含氮环，m、n、o和p独立地为零或1，R2、R3、R4和R5为各种基团；以及其生理学上可接受的盐、N-氧化物和前药。这些化合物具有内皮素拮抗活性，并可用作药物。
• Chromium-Catalyzed Reductive Cleavage of Unactivated Aromatic and Benzylic C–O Bonds
  作者：Meiming Luo、Xiaoming Zeng、Shuqing Yuan、Liang Ling、Jinghua Tang

  DOI：10.1055/a-1507-6419

  日期：2021.9

  Reductive cleavage of aromatic and benzylic C–O bonds by chromium catalysis is reported. This deoxygenative reaction was promoted by low-cost CrCl2 precatalyst combined with poly(methyl hydrogen siloxane) as the mild reducing agent, providing a strategy in forming reduced motifs by cleavage of unactivated C–O bonds. A range of functional groups such as bromide, chloride, fluoride, hydroxyl, amino,

  据报道，铬催化还原性裂解芳香族和苄基 C-O 键。这种脱氧反应由低成本的 CrCl2 预催化剂与作为温和还原剂的聚（甲基氢硅氧烷）结合促进，提供了一种通过裂解未活化的 C-O 键形成还原基序的策略。一系列的官能团如溴、氯、氟、羟基、氨基和烷氧基羰基可以保留在还原过程中。
• Palladium-Catalyzed Direct Thiolation of Aryl CH Bonds with Disulfides
  作者：Masayuki Iwasaki、Miki Iyanaga、Yuta Tsuchiya、Yugo Nishimura、Wenjuan Li、Zhiping Li、Yasushi Nishihara

  DOI：10.1002/chem.201304717

  日期：2014.2.24

  A catalytic variant of the direct thiolation of arenes, bearing directing groups, with disulfides or thiols has been developed under palladium and copper co‐catalysis. Both sulfenyl moieties of the disulfide could be incorporated into the thiolated products, therefore, the reactions reached completion with only half an equivalent of disulfide, with respect to the starting arene. Experimental evidence

  在钯和铜的共催化下，开发了带有二价硫或硫醇的带有导向基团的芳烃直接硫醇化的催化变体。二硫化物的两个亚硫基部分都可以结合到硫醇化产物中，因此，相对于起始芳烃，仅用一半当量的二硫化物就可以完成反应。实验证据表明该反应是通过Pd II / Pd IV机制进行的。