2039-06-7Relevant academic research and scientific papers
C-(β-d-Glucopyranosyl)formamidrazones, formic acid hydrazides and their transformations into 3-(β-d-glucopyranosyl)-5-substituted-1,2,4- triazoles: A synthetic and computational study
Bokor, éva,Fekete, Attila,Varga, Gergely,Szocs, Béla,Czifrák, Katalin,Komáromi, István,Somsák, László
, p. 10391 - 10404 (2013)
Synthesis of O-perbenzoylated 3-(β-d-glucopyranosyl)-5-substituted-1, 2,4-triazoles, precursors of potent inhibitors of glycogen phosphorylase, was studied by ring closures of N1-acyl-carboxamidrazone type intermediates. Reactions of C-(β-d-glu
PEG-supported synthesis of 3,5-disubstituted 1,2,4-triazoles
Wang, Jun-Ke,Zong, Ying-Xiao,Yue, Guo-Ren
, p. 1135 - 1136 (2005)
1,3-Dipolar cycloadditions between diethyl azodicarboxylate and the polymer-bound munchnones generated from the corresponding carboxylic acids provided a library of 3,5-disubstituted 1,2,4-triazoles in excellent yield and high purity.
The Synthesis of 1,3,5-Thiadiazinylium Salts
Shibuya, Isao
, p. 3369 - 3370 (1980)
1,3,5-Thiadiazinylium salts were synthesized in good yields by the reaction of N-acyl imidoyl chlorides with thioamides or the treatment of 4H-1,3,5-thiadiazines with trityl salts.
Liquid-phase traceless synthesis of 3,5-disubstituted 1,2,4-triazoles
Wang, Xi-Cun,Wang, Jun-Ke,Wu, Dong-Qing,Zong, Ying-Xiao
, p. 2595 - 2598 (2005)
A liquid-phase traceless route to 3,5-disubstituted-1,2,4-triazoles has been developed, which allows for the incorporation of two elements of diversity. The heterocycle was constructed upon PEG6000 (soluble polymer) modified by 4-hydroxy-2-methoxy-benzaldehyde, from which a traceless cleavage could be realized with TFA-CH2Cl2. This method provided a library of 3,5-disubstituted-1,2,4-triazoles with high yields and purity. Georg Thieme Verlag Stuttgart.
Solid phase synthesis of 1,2,4-triazoles under microwave irradiation
Rostamizadeh, Shahnaz,Tajik, Hasan,Yazdanfarahi, Soheila
, p. 113 - 117 (2003)
1,2,4-Triazoles (3a-g) have been prepared from three component condensation reaction of acid hydrazide (1), S-methyl isothioamide hydroiodide (2), and ammonium acetate on the surface of silica gel under microwave irradiation.
1,2,4-Triazolato paddlewheel dibismuth complexes with very short Bi(ii)-Bi(ii) bonds: Bismuth(iii) oxidation of 1,2,4-triazolato anions into neutral: N -1,2,4-triazolyl radicals
He, Ru-Ru,Li, Li,Ma, Jian-Ping,Su, Ji-Hu,Zhang, Xiang,Zhao, Ming-Gang,Zheng, Wenjun
, p. 15190 - 15194 (2020)
Bismuth(iii) oxidation of 3,5-di-substituted-1,2,4-triazolato anions afforded a paddlewheel 1,2,4-triazolato dibismuth complex [L2(Bi-Bi)L2] (L = η1,η1-3,5-R2tz, R = Ph (3), iPr (4)) with very short Bi(ii)-Bi(ii) bonds (2.8650(4)-2.8721(3) ?). The reaction involved the intermediates of the organobismuth radical [Bi(R2tz)2] and neutral N-1,2,4-triazolyl radical [3,5-R2tz]. The dimerization of the former produced the corresponding dibismuth complex while the latter was trapped by using spin trap 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) to give the radical adduct of {(3,5-R2tz)(DMPO)} which was unambiguously evidenced by EPR analysis.
A base-catalyzed, direct synthesis of 3,5-disubstituted 1,2,4-triazoles from nitriles and hydrazides
Yeung, Kap-Sun,Farkas, Michelle E.,Kadow, John F.,Meanwell, Nicholas A.
, p. 3429 - 3432 (2005)
A convenient and efficient one step, base-catalyzed synthesis of 3,5-disubstituted 1,2,4-triazoles by the condensation of a nitrile and a hydrazide is presented. A diverse range of functionality and heterocycles are tolerated under the reaction conditions
Iodine Catalyzed Oxidative Coupling of Diaminoazines and Amines for the Synthesis of 3,5-Disubstituted-1,2,4-Triazoles
Beifuss, Uwe,Bharatam, Prasad V.,Chourasiya, Sumit S.,Kathuria, Deepika,Sahoo, Subash C.,Wani, Aabid A.
, p. 7659 - 7671 (2021/06/25)
A simple, convenient, transition metal-free one pot synthesis of 3,5-disubstituted-1,2,4-triazoles has been established. The innovation in this reaction is the use of easily available 1,1-diaminoazines as substrates. This method provides the products with wider substrate scope, at an expedited rate, and with relatively better yields in comparison to the reported methods. The reaction mechanism involves an initial intermolecular nucleophilic addition (facilitated by I2) followed by intramolecular nucleophilic cyclization.
Method for preparing 1,3,5-trisubstituted-1,2,4-triazole derivative in one step
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Paragraph 0026; 0096-0100; 0296-0300, (2020/08/12)
The invention discloses a method for preparing a 1,3,5-trisubstituted-1,2,4-triazole derivative in one step, and belongs to the technical field of organic chemical synthesis. According to the method,a simple nitrile compound and a hydrazine compound are u
TBHP/TBAI–Mediated simple and efficient synthesis of 3,5-disubstituted and 1,3,5-trisubstituted 1H-1,2,4-triazoles via oxidative decarbonylation of aromatic aldehydes and testing for antibacterial activities
Agisho, Habtamu Abebe,Esatu, Habdolo,Hairat, Suboot,Zaki, Mehvash
supporting information, (2020/05/19)
The author has developed a simple, efficient and eco–friendly convenient general method for synthesis of 3,5–disubstituted–1,2,4–triazoles and 1,3,5–trisubstituted–1,2,4–triazoles from 3–monosubstituted–1,2,4–triazoles and 1,3–disubstituted–1,2,4–triazoles respectively using tetrabutylammonium iodide (TBAI) as catalyst and TBHP as oxidant under mid reaction conditions. This method provides structurally diverse 3,5–disubstituted 1,2,4–triazoes and 1,3,5––trisubstituted–1,2,4–triazoles in good to excellent yields. 3,5–Disubstituted 1,2,4–triazoes and 1,3,5––trisubstituted–1,2,4–triazoles derivatives are biologically and pharmaceutically active molecules, and therefore, this protocol could be of wide applications in medicinal chemistry and organic chemistry.
