Synthesis and Characterization of Oxadisilole-Fused 1<i>H</i>-Benzo[<i>f</i>]indazoles and 1<i>H</i>-Naphtho[2,3-<i>f</i>]indazoles
作者:Yajuan Zhang、Xuyan Ma、Yali Chen、Xuanming Chen、Lei Guo、Weiguo Cao、Jie Chen、Man Shing Wong
DOI:10.1002/ejoc.201300110
日期:2013.5
1H-benzo[f]- and 1H-naphtho[2,3-f]indazoles have been synthesized by the 1,3-dipolar cycloaddition reactions of benzo- or naphtho-oxabicycloalkenes with nitrile imines generated in situ from N-arylhydrazonoyl chlorides followed by deoxygenation and aromatization. The photophysical, redox and thermal properties of these compounds have been characterized. Some of the indazoles show potential as deep-blue emitters
One-flask synthesis of 1,3,5-trisubstituted 1,2,4-triazoles from nitriles and hydrazonoyl chlorides via 1,3-dipolar cycloaddition.
一瓶法合成1,3,5-三取代-1,2,4-三唑,从腈和叠氮酰氯通过1,3-偶极环加成。
15N NMR spectroscopy of partially saturated pyrazoles
作者:Lara De Benassuti、Teresa Recca、Giorgio Molteni
DOI:10.1016/j.tet.2007.02.063
日期:2007.4
namely 1-(4-substituted)phenyl-3-methoxycarbonyl-5-ethoxycarbonyl-4,5-dihydropyrazoles, were submitted to extensive 15N NMR spectroscopic analyses, performed in natural abundance. Nitrogen chemicalshifts were measured by means of INEPT and HMBC experiments, while long range proton–nitrogen scalar coupling values were taken through J-HMBC experiments. A linear plot between nitrogen chemicalshifts and
将部分饱和的吡唑,即1-(4-取代)苯基-3-甲氧基羰基-5-乙氧基羰基-4,5-二氢吡唑,进行大量的15 N NMR光谱分析,以自然丰度进行。氮化学位移通过INEPT和HMBC实验测量,而远距离质子-氮标量耦合值通过J -HMBC实验获得。氮化学位移和哈米特之间的线性图σ p观察到,使我们能够定量地涉及观察到的化学位移的取代基的电子特征的4,5-二氢吡唑环的1-位上。
Facile One-Pot Synthesis of Methyl 1-Aryl-1<i>H</i>
-1,2,4-triazole-3-carboxylates from Nitrilimines with Vilsmeier Reagent
作者:Shuo-En Tsai、Kun-Heng Chiang、Ching-Chun Tseng、Nai-Wei Chen、Ching-Yuh Chern、Fung Fuh Wong
DOI:10.1002/ejoc.201801808
日期:2019.2.28
A selective and convenient one‐pot methods have been developed for the synthesis of 1,2,4‐triazoles and methyl 1H‐1,2,4‐triazole‐3‐carboxylates by using hydrazonoyl hydrochlorides (nitrilimines) with Vilsmeier reagent. 2‐Amino‐2‐(2‐arylhydrazono)acetates were prepared from 2‐chloro‐2‐(2‐arylhydrazono)acetates with bis(trimethylsilyl)amine [NH(SiMe3)2] as the isolated intermediates for the further mechanistic
已经开发了一种选择性方便的单罐方法,该方法是通过使用肼基酰基盐酸盐(硝化亚胺)和Vilsmeier试剂来合成1,2,4-三唑和1 H - 1,2,4-三唑-3-羧酸甲酯。2-氨基-2-(2-芳基肼基)乙酸酯是由2-氯-2-(2-芳基肼基)乙酸酯与双(三甲基甲硅烷基)胺[NH(SiMe 3)2 ]作为分离的中间体制备的,用于进一步的机理研究。
Pyrazolo[5,1-<i>c</i>][1,2,4]triazoles: Antimicrobial, Antitumor Activities, and Computational Docking Studies
作者:Thoraya A. Farghaly、Magda A. Abdallah、Huda K. Mahmoud、Nashwa El-Metwaly、Mahmoud Elaasser
DOI:10.1002/jhet.2892
日期:2017.9
A new series of pyrazolotriazoles 7a–l, 11, and 15a–c derivedfrom the reaction of 3‐amino‐4‐(arylhydrazono)‐4,5‐dihydropyrazol‐5‐one 3a,b with various types of hydrazonoyl chlorides 4, 10, 12, and 13 was being synthesized in existence of triethylamine. The spectral data were assured the postulated structures for all compounds. All 7‐arylazopyrazolo[5,1‐c][1,2,4]triazole derivatives 7a–l, 11, and 15a–c
一系列新吡唑并三唑的图7a-1 ,11,和15A-C从3-氨基-4-(芳基亚肼基)-4,5-二氢吡唑-5-酮的反应的图3a,b与各种类型腙氯化物4,10,12和13是在三乙胺存在被合成。光谱数据确保了所有化合物的假定结构。所有7-arylazopyrazolo [5,1- c ^ ] [1,2,4]三唑衍生物7A-1,11,和15A-C已对它们的抗微生物和抗肿瘤活性进行了评估,结果表明,某些衍生物具有良好或中等的抗肿瘤和抗菌作用。此外,使用AutoDock工具4.2进行的计算研究正在证实生物活性的结果。