N-(4-fluorophenyl)-5-phenyl-1,3,4-thiadiazol-2-amine | 827580-36-9

• 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: N-(4-fluorophenyl)-5-phenyl-1,3,4-thiadiazol-2-amine
• CAS: 827580-36-9
• 化学式: C₁₄H₁₀FN₃S
• 分子量: 271.318
• InChiKey: PDTQGVDIJNDFPV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  66
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  苯甲酸苯酯 在 硫酸 、 一水合肼 作用下， 以 甲醇 、 乙醇 为溶剂， 反应 4.0h， 生成 N-(4-fluorophenyl)-5-phenyl-1,3,4-thiadiazol-2-amine
  参考文献：
  名称：

  1,3,4-Thiadiazole Derivatives. Synthesis, Structure Elucidation, and Structure−Antituberculosis Activity Relationship Investigation

  摘要：

  A series of 2,5-disubstituted-1,3,4-thiadiazoles were synthesized, the compounds structures were elucidated and screened for the antituberculosis activity against Mycobacterium tuberculosis H37Rv using the BACTEC 460 radiometric system. Among the tested compounds, 2-phenylamino-5-(4-fluorophenyl)-1,3,4-thiadiazole 22 showed the highest inhibitory activity. The relationships between the structures of compounds and their antituberculosis activity were investigated by the Electronic-Topological Method (ETM) and feed forward neural networks (FFNNs) trained with the back-propagation algorithm. As a result of the approach, a system of pharmacophores and anti-pharmacophores has been found that effectively separates compounds of the examination set into groups of active and inactive compounds. The system can be applied to the screening and design of new active compounds possessing skeletons similar to those used in the present study.

  DOI：

  10.1021/jm0495632

文献信息

• Regioselective Synthesis of 2-Amino-Substituted 1,3,4-Oxadiazole and 1,3,4-Thiadiazole Derivatives via Reagent-Based Cyclization of Thiosemicarbazide Intermediate
  作者：Seung-Ju Yang、Seok-Hyeong Lee、Hyun-Jung Kwak、Young-Dae Gong

  DOI：10.1021/jo302324r

  日期：2013.1.18

  is shown in select sets of thiosemicarbazide 3 with R1(benzyl) and R2(phenyl). 2-Amino-1,3,4-oxadiazole 4 was also shown in the reaction of p-TsCl mediated cyclization. The resulting 2-amino-1,3,4-oxadiazole and 2-amino-1,3,4-thiadiazole core skeleton are functionalized with various electrophiles such as alkyl halide, acid halides, and sulfornyl chloride in high yields.

  描述了一种基于区域选择性的基于试剂的2-氨基-1,3,4-恶二唑与2-氨基-1,3,4-噻二唑核心骨架环化反应的方法。使硫代氨基脲中间体3与DMSO中的EDC·HCl或p- TsCl，N-甲基-2-吡咯烷酮中的三乙胺反应，得到相应的2-氨基-1,3,4-恶二唑4和2-氨基-1,3 ，4-噻二唑5通过区域选择环化过程。区域选择性是受两个R 1和R 2在p -TsCl介导的环化。在具有R 1（苄基）和R 2的硫代氨基脲3的精选集中显示（苯基）。在对-TsCl介导的环化反应中还显示了2-氨基-1,3,4-恶二唑4。所得的2-氨基-1,3,4-恶二唑和2-氨基-1,3,4-噻二唑核心骨架被各种亲电试剂如烷基卤，酰卤和磺酰氯高官能度地官能化。
• Synthesis of 2-amino-substituted-1,3,4-thiadiazoles via 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) mediated intramolecular C–S bond formation in thiosemicarbazones
  作者：Sarangthem Joychandra Singh、Suresh Rajamanickam、Anupal Gogoi、Bhisma K. Patel

  DOI：10.1016/j.tetlet.2016.01.083

  日期：2016.3

  An effective oxidative intramolecular cyclization (C–S bond formation) of thiosemicarbazones using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) has been developed to afford a diverse array of 2-amino-substituted-1,3,4-thiadiazoles. The attractive features of this protocol are operational simplicity, obviates the need of expensive transition-metal catalysts and broad substrate scope.

  已开发出使用2,3-二氯-5,6-二氰基-1,4-苯醌（DDQ）的硫半脲的有效氧化分子内环化（CS键形成），以提供各种2-氨基取代的- 1,3,4-噻二唑。该协议的吸引人的特点是操作简单，无需昂贵的过渡金属催化剂和广泛的底物范围。
• Visible-light-induced intramolecular C–S bond formation for practical synthesis of 2,5-disubstituted 1,3,4-thiadiazoles
  作者：Zhaocheng Shi、Ruohan Li、Wenqing Lan、Haishan Wei、Shouri Sheng、Junmin Chen

  DOI：10.1080/00397911.2022.2149342

  日期：2023.1.2

  and facile visible-light mediated protocol for the synthesis of 2-arylamino-5-aryl-1,3,4- thiadiazoles via one-pot condensation and intramolecular C–S coupling cascade reaction has been developed. This protocol is mild, practical, metal-free and exogenous oxidant-free, and only involves Eosin Y as photocatalyst using oxygen as the sole terminal oxidant. This protocol exhibits synthetic simplicity, broad

  摘要 开发了一种通用且简便的可见光介导方案，用于通过一锅缩合和分子内 C-S 偶联级联反应合成 2-arylamino-5-aryl-1,3,4- 噻二唑。该协议温和、实用、不含金属和外源氧化剂，仅涉及曙红 Y 作为光催化剂，使用氧气作为唯一的终端氧化剂。该协议展示了合成的简单性、广泛的底物范围和出色的功能组兼容性。还可以以令人满意的产率促进克级合成，这开辟了实际应用的可能性。
• Chemodivergent Photocatalyzed Heterocyclization of Hydrazones and Isothiocyanates for the Selectivity Synthesis of 2-Amino-1,3,4-thiadiazoles and 1,2,4-Triazole-3-thiones
  作者：Qing-Hu Teng、Feng-Lai Lu、Kai Wang、Li-Ya Zhou、Dian-Peng Li

  DOI：10.1021/acs.joc.3c00320

  日期：2023.6.2

  A photocatalytic chemodivergent reaction for the selectivity formation of C–S and C–N bonds in a controlled manner was proposed. The reaction medium, either neutral or acidic, is critical to dictate the formation of 2-amino-1,3,4-thiadiazoles and 1,2,4-triazole-3-thiones from isothiocyanates and hydrazones. This is a practical protocol to achieve the chemoselectivity under mild and metal-free conditions

  提出了一种以受控方式选择性形成 C-S 和 C-N 键的光催化化学发散反应。中性或酸性反应介质对于决定从异硫氰酸酯和腙形成 2-氨基-1,3,4-噻二唑和 1,2,4-三唑-3-硫酮至关重要。这是在温和和无金属条件下实现化学选择性的实用方案。
• Design and Synthesis of 1,3,4-Thiadiazole Derivatives as Novel Anticancer and Antitubercular Agents
  作者：D. Chandra Sekhar、D. V. Venkata Rao、A. Tejeswara Rao、U. Lav Kumar、Anjali Jha

  DOI：10.1134/s1070363219040224

  日期：2019.4

  A series of novel 5-phenyl-substituted 1,3,4-thiadiazole-2-amines were designed, synthesized, and screened for their antitumor and antitubercular activities. The target compounds were synthesized starting from isocyanates and acid hydrazides by conventional and microwave-assisted protocols. The structures of the products were confirmed by H-1 NMR, C-13 NMR, high-resolution mass spectrometry, and IR spectroscopy and elemental analysis. Some of the synthesized compounds showed significant invitro antitumor activities against breast cancer and normal human cell lines. Among them, N-benzyl-5-(4-fluorophenyl)-, N-benzyl-5-(4-nitrophenyl)-, and 5-phenyl-N-(p-tolyl)-1,3,4-thiadiazole-2-amines demonstrated higher inhibitory activities against the MDA-MB-231 cell line than the cisplatin control (IC50 3.3 M). N-Benzyl-5-(4-methoxyphenyl)-, 5-phenyl-N-[4-(trifluoromethyl)phenyl]methyl-, N-benzyl-5-(4-fluorophenyl)-, and N-benzyl-5-(4-nitrophenyl)-1,3,4-thiadiazole-2-amines exhibited high inhibitory activities against the HEK293T cell line (IC50 52.63, 42.67, 34.71, and 33.74 M, respectively), which were higher compared to the cisplatin control. In antitubercular activity testing against mycobacterium smegmatis MC155, 5-phenyl-N-[4-(trifluoromethyl)-phenyl]methyl-1,3,4-thiadiazole-2-amine proved to be a more potent agent (MIC 26.46 g/mL) compared to the Isoniazid control (12 g/mL). Potential bioactivities of the synthesized compounds were computed using Molinspiration and Molsoft software tools.