(Z)-N'-(4-(dimethylamino)benzylidene)isonicotinic hydrazide | 1262213-12-6

• 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
• 英文名称: (Z)-N'-(4-(dimethylamino)benzylidene)isonicotinic hydrazide
• 英文别名: N'-{(Z)-[4-(dimethylamino)phenyl]methylidene}pyridine-4-carbohydrazide；isonicotinic acid (4-dimethylamino-benzylidene)-hydrazide；(Z)-N'-(4-(dimethylamino)benzylidene)isonicotinohydrazide；N-[(Z)-[4-(dimethylamino)phenyl]methylideneamino]pyridine-4-carboxamide
• CAS: 1262213-12-6
• 化学式: C₁₅H₁₆N₄O
• 分子量: 268.318
• InChiKey: MSHOEHQTHKGVOD-BOPFTXTBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  57.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (Z)-N'-(4-(dimethylamino)benzylidene)isonicotinic hydrazide 以 乙腈 为溶剂， 反应 0.07h， 生成 (E)-N’-(4'-(dimethylamino)benzylidene)isonicotinohydrazide
  参考文献：
  名称：

  Acylhydrazones as Widely Tunable Photoswitches

  摘要：

  Molecular photoswitches have attracted much attention in biological and materials contexts. Despite the fact that existing classes of these highly interesting functional molecules have been heavily investigated and optimized, distinct obstacles and inherent limitations remain. Considerable synthetic efforts and complex structure property relationships render the development and exploitation of new photoswitch families difficult. Here, we focus our attention on acylhydrazones: a novel, yet underexploited class of photochromic molecules based on the imine structural motif. We optimized the synthesis of these potent photoswitches and prepared a library of over 40 compounds, bearing different substituents in all four crucial positions of the backbone fragment, and conducted a systematic study of their photochromic properties as a function of structural variation. This modular family of organic photoswitches offers a unique combination of properties and the compounds are easily prepared on large scales within hours, through an atom-economic synthesis, from commercially available starting materials. During our thorough spectroscopic investigations, we identified photoswitches covering a wide range of thermal half-lives of their (Z)-isomers, from short-lived T-type to thermally stable P-type derivatives. By proper substitution, excellent band separation between the absorbance maxima of (E)- and (Z)-isomers in the UV or visible region could be achieved. Our library furthermore includes notable examples of rare negative photochromic systems, and we show that acylhydrazones are highly fatigue resistant and exhibit good quantum yields.

  DOI：

  10.1021/jacs.5b09519
• 作为产物：
  描述：

  (E)-N’-(4'-(dimethylamino)benzylidene)isonicotinohydrazide 以 乙腈 为溶剂， 反应 0.25h， 生成 (Z)-N'-(4-(dimethylamino)benzylidene)isonicotinic hydrazide
  参考文献：
  名称：

  Acylhydrazones as Widely Tunable Photoswitches

  摘要：

  Molecular photoswitches have attracted much attention in biological and materials contexts. Despite the fact that existing classes of these highly interesting functional molecules have been heavily investigated and optimized, distinct obstacles and inherent limitations remain. Considerable synthetic efforts and complex structure property relationships render the development and exploitation of new photoswitch families difficult. Here, we focus our attention on acylhydrazones: a novel, yet underexploited class of photochromic molecules based on the imine structural motif. We optimized the synthesis of these potent photoswitches and prepared a library of over 40 compounds, bearing different substituents in all four crucial positions of the backbone fragment, and conducted a systematic study of their photochromic properties as a function of structural variation. This modular family of organic photoswitches offers a unique combination of properties and the compounds are easily prepared on large scales within hours, through an atom-economic synthesis, from commercially available starting materials. During our thorough spectroscopic investigations, we identified photoswitches covering a wide range of thermal half-lives of their (Z)-isomers, from short-lived T-type to thermally stable P-type derivatives. By proper substitution, excellent band separation between the absorbance maxima of (E)- and (Z)-isomers in the UV or visible region could be achieved. Our library furthermore includes notable examples of rare negative photochromic systems, and we show that acylhydrazones are highly fatigue resistant and exhibit good quantum yields.

  DOI：

  10.1021/jacs.5b09519

文献信息

• Synthesis and Antimicrobial Activity of N-[2-(aryl/substituted aryl)-4-oxo-1,3-thiazolidin-3-yl]pyridine-4-carboxamide
  作者：Asha B. Thomas、Rabindra K. Nanda、Lata P. Kothapalli、Avinash D. Deshpande

  DOI：10.5012/jkcs.2011.55.6.960

  日期：2011.12.20

  A series of isonicotinyl hydrazones and their 4-thiazolidinones have been synthesized by condensation of isonicotinic acid hydrazide with various aromatic aldehydes to yield Schiff's bases, followed by the cyclocondensation of Schiff's bases with 2-mercaptoacetic acid to yield their 4-thiazolidinones. The synthesized compounds have been characterized by their elemental, analytical and spectral studies. All these compounds were evaluated for their invitro antimicrobial activity against a spectrum of non-resistant and resistant microbial organisms. These studies proved that compounds 5e,i against B. subtilis; 5e,f,h against B. anthracis; 5g,i against S. aureus showed good activity at lower concentrations. Compounds 5d-5i displayed significant activity against resistant strain of K. pneumonia with minimum inhibitory potency in the concentration range of 2-16 ug/ml.

  通过异烟酸酰肼与各种芳香醛缩合生成席夫碱，然后席夫碱与2-巯基乙酸环缩合生成4-噻唑烷酮，合成了一系列异烟酰腙及其4-噻唑烷酮。合成的化合物已通过元素、分析和光谱研究进行了表征。所有这些化合物都针对一系列非耐药和耐药微生物的体外抗菌活性进行了评估。这些研究证明化合物5e、i具有抗枯草芽孢杆菌的作用； 5e，f，h 对抗炭疽芽孢杆菌； 5g,i 在较低浓度下对金黄色葡萄球菌表现出良好的活性。化合物5d-5i对肺炎克雷伯菌耐药菌株表现出显着的活性，在2-16ug/ml的浓度范围内具有最小抑制效力。
• Design and synthesis of novel N-substituted-3-chloro-2-azetidinone derivatives as potential anticonvulsant agents
  作者：Hozaifa Hasan、Maymoona Akhter、Wasim Akhter、Israr Ali、Mohd. Zaheen、Iftikhar Ahsan、Danish Mahmood

  DOI：10.1007/s00044-010-9485-0

  日期：2011.11

  A new series of N-[3-chloro-2-(substitutedphenyl)-4-oxo-azetidin-1-yl]isonicotinamide (2a-l) were synthesized through condensation reaction of isoniazide with substituted aldehyde. The newly synthesized compounds were characterized by spectral data (IR, (1)H NMR, mass spectra) and elemental analysis. Compound 2e exhibited excellent anticonvulsant activity and no neurotoxicity in comparison to reference drug phenytoin.
• Acylhydrazones as Widely Tunable Photoswitches
  作者：Derk Jan van Dijken、Petr Kovaříček、Svante P. Ihrig、Stefan Hecht

  DOI：10.1021/jacs.5b09519

  日期：2015.12.2

  Molecular photoswitches have attracted much attention in biological and materials contexts. Despite the fact that existing classes of these highly interesting functional molecules have been heavily investigated and optimized, distinct obstacles and inherent limitations remain. Considerable synthetic efforts and complex structure property relationships render the development and exploitation of new photoswitch families difficult. Here, we focus our attention on acylhydrazones: a novel, yet underexploited class of photochromic molecules based on the imine structural motif. We optimized the synthesis of these potent photoswitches and prepared a library of over 40 compounds, bearing different substituents in all four crucial positions of the backbone fragment, and conducted a systematic study of their photochromic properties as a function of structural variation. This modular family of organic photoswitches offers a unique combination of properties and the compounds are easily prepared on large scales within hours, through an atom-economic synthesis, from commercially available starting materials. During our thorough spectroscopic investigations, we identified photoswitches covering a wide range of thermal half-lives of their (Z)-isomers, from short-lived T-type to thermally stable P-type derivatives. By proper substitution, excellent band separation between the absorbance maxima of (E)- and (Z)-isomers in the UV or visible region could be achieved. Our library furthermore includes notable examples of rare negative photochromic systems, and we show that acylhydrazones are highly fatigue resistant and exhibit good quantum yields.