4-(2-methyl-4-phenylthiazol-5-yl)benzaldehyde | 1516952-45-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 4-(2-methyl-4-phenylthiazol-5-yl)benzaldehyde
• 英文别名: 4-(2-Methyl-4-phenyl-1,3-thiazol-5-yl)benzaldehyde；4-(2-methyl-4-phenyl-1,3-thiazol-5-yl)benzaldehyde
• CAS: 1516952-45-6
• 化学式: C₁₇H₁₃NOS
• 分子量: 279.362
• InChiKey: MFBIAVJPMLBONK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  20
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  58.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-溴苯乙酮 在 palladium diacetate 、 potassium carbonate 作用下， 以 N-甲基吡咯烷酮 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.17h， 生成 4-(2-methyl-4-phenylthiazol-5-yl)benzaldehyde
  参考文献：
  名称：

  Synthesis of trisubstituted thiazoles by ligand-free palladium-catalyzed direct 5-arylation of 2,4-disubstituted thiazoles under conventional and microwave-assisted heating

  摘要：

  Trisubstituted thiazoles were synthesized with excellent yields using ligand-free, palladium-catalyzed, direct 5-arylation of 2,4-disubstituted thiazole and conventional or microwave-assisted heating. The palladium-catalyzed reaction yields were significantly influenced by LiCI additive, solvent, and heating method. The reaction times were reduced dramatically by employing microwave radiation instead of conventional heating. The synthetic methods can be applied to diverse 2,4,5-trisubstituted thiazoles by varying the aryl bromide and disubstituted thiazole reactants. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.10.053

文献信息

• Camphyl-based α-diimine palladium complexes: highly efficient precatalysts for direct arylation of thiazoles in open-air
  作者：Fu-Min Chen、Dong-Dong Lu、Li-Qun Hu、Ju Huang、Feng-Shou Liu

  DOI：10.1039/c7ob00856b

  日期：——

  Based on the strategy of the development of phosphine-free palladium-catalyzed direct C–H arylation, a series of camphyl-based α-diimine palladium complexes bearing sterically bulky substituents were synthesized and characterized. The palladium complexes were applied for the cross-coupling of thiazole derivatives with aryl bromides. The effect of the sterically bulky substituent on the N-aryl moiety

  基于开发无膦钯催化的直接CHH芳基化的策略，合成并表征了一系列基于迷迭香的带有空间庞大取代基的α-二亚胺钯配合物。钯配合物用于噻唑衍生物与芳基溴化物的交叉偶联。筛选了体积庞大的取代基对N-芳基部分的影响以及反应条件。在最佳方案下，在露天条件下，在钯含量为0.2 mol％的情况下，可以将宽范围的芳基溴化物与噻唑平稳地偶联，并获得良好或优异的收率。
• Aerobic and Efficient Direct Arylation of Five-Membered Heteroarenes and Their Benzocondensed Derivatives with Aryl Bromides by Bulky α-Hydroxyimine Palladium Complexes
  作者：Bao-Tian Luo、Huan Liu、Zhi-Jie Lin、Jingxing Jiang、Dong-Sheng Shen、Rui-Zhi Liu、Zhuofeng Ke、Feng-Shou Liu

  DOI：10.1021/acs.organomet.5b00181

  日期：2015.10.26

  In the present work, a series of alpha-hydroxyimine palladium complexes with bulky substituents (i.e., [Ar-N=C(R)-C(R)(2)-OH]PdCl2} (C1, R = Me, Ar = 2-diphenylmethyl-4,6-dimethylphenyl; C2, R = Me, Ar = 2,6-bis(diphenylmethyl)-4-methylphenyl; C3, R = Me, Ar = 2,6-bis(diphenylinethyl)-4-methyoxylphenyl; C4, R = Me, Ar = 2,6-bis(diphenylmethyl)-4-chlorophenyl; C5, R = Ph, Ar = 2,6-dimethylphenyl; C6, R = Ph, Ar = 2,6-diisopropylphenyl)) were synthesized and characterized. The structures of palladium complexes C1 and C2 were determined by X-ray diffraction. These bidentate N,O-palladium complexes were applied for direct arylation under aerobic conditions. The effects of the reaction conditions and ligand substitution on the catalytic activity were evaluated. Upon a low palladium loading of 0.5 mol %, the bulky palladium complex C6 was successfully used to catalyze the cross-coupling of a variety of five-membered heteroarenes and their benzo-condensed derivatives with (hetero)aryl bromides. The mechanistic investigation on the direct arylation supported the involvement of a Pd(0)/Pd(II) CMD process.