- Recyclization of 1,3,4-oxadiazoles and bis-1,3,4-oxadiazoles into 1,2,4-triazole derivatives. Synthesis of 5-unsubstituted 1,2,4-triazoles
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Efficient methods have been developed for obtaining precursors of stable carbenes, viz. 5-unsubstituted 3,4-diaryl-1,2,4-triazoles and 3,3′- or 4,4′-bridge linked bis-1,2,4-triazoles, by the recyclization of 5-unsubstituted 1,3,4-oxadiazoles or p-phenylen
- Korotkikh,Kiselev,Knishevitsky,Raenko,Pekhtereva,Shvaika
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- Two platinum(ii) complexes with a 4-phenyl-4: H -1,2,4-triazole derivative as an ancillary ligand for efficient green OLEDs
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Two new cyclometalated platinum(ii) complexes ((TN3T)Pt(dptp), (4tfmppy)Pt(dptp)) with 2′,6′-bis(trifluoromethyl)-2,3′-bipyridine (TN3T) and 4-trifluoromethylphenylpyridine (4tfmppy) as the cyclometalated ligands and the nitrogen het
- Lu, Guang-Zhao,Tu, Zhen-Long,Liu, Liang,Zheng, You-Xuan,Zhao, Yue
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p. 1892 - 1899
(2019/03/23)
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- Two green iridium(iii) complexes containing the electron-transporting group of 4-phenyl-4H-1,2,4-triazole for highly efficient OLEDs
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Two new iridium(iii) cyclometalated complexes (Ir-TN3T and Ir-TN4T) with 2′,6′-bis(trifluoromethyl)-2,3′-bipyridine (TN3T) and 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine (TN4T) as the cyclometalated ligands and
- Lu, Guang-Zhao,Liu, Liang,Tu, Zhen-Long,Zhou, Yong-Hui,Zheng, You-Xuan
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p. 2022 - 2028
(2019/02/24)
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- Synthesis of 1,2,4-Triazoles via Oxidative Heterocyclization: Selective C-N Bond over C-S Bond Formation
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The higher propensity of C-N over C-S bond forming ability was demonstrated, through formal C-H functionalization during the construction of 4,5-disubstituted 1,2,4-triazole-3-thiones from arylidenearylthiosemicarbazides catalyzed by Cu(II). However, ster
- Gogoi, Anupal,Guin, Srimanta,Rajamanickam, Suresh,Rout, Saroj Kumar,Patel, Bhisma K.
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p. 9016 - 9027
(2015/09/28)
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- Tunable protic ionic liquids as solvent-catalysts for improved synthesis of multiply substituted 1,2,4-triazoles from oxadiazoles and organoamines
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More than green alternatives to traditional volatile molecular organic solvents, protic ionic liquids as dual solvent-catalysts have been successfully used to promote reactions of organoamines with oxadiazoles to afford sterically hindered 1,2,4-triazoles. Among the tested protic ionic liquids, pyridinium trifluoroacetate and acetate showed the highest efficiency for the reactions of arylamines and alkylamines, respectively, indicating that tunable catalysis could be readily effected with protic ionic liquid solvent-catalysts by simply tuning their cation and anion counterparts. A general and efficient approach has been developed for synthesis of multiply substituted 1,2,4-triazoles based on the tunable protic ionic liquid solvent-catalyst systems.
- Chen, Xiaofeng,Liu, Rui,Xu, Yuan,Zou, Gang
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experimental part
p. 4813 - 4819
(2012/07/31)
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- ORGANOMETALLIC COMPLEX, LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
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Provided are organometallic complexes that can exhibit phosphorescence. One of the novel organometallic complexes is represented by General Formula (G1). In General Formula (G1), R1 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms which may have a substituent, and an aralkyl group having 7 to 10 carbon atoms which may have a substituent. In addition, R2 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms which may have a substituent, and an aryl group having 6 to 12 carbon atoms which may have a substituent. Further, Ar represents an arylene group having 6 to 13 carbon atoms which may have a substituent. Further, M represents a Group 9 element or a Group 10 element.
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Page/Page column 74
(2011/05/11)
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- Organometallic Complex, Light-Emitting Element, Display Device, Electronic Device, and Lighting Device
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Provided are organometallic complexes that can exhibit phosphorescence. One of the novel organometallic complexes is represented by General Formula (G1). In General Formula (G1), R1 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms which may have a substituent, and an aralkyl group having 7 to 10 carbon atoms which may have a substituent. In addition, R2 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms which may have a substituent, and an aryl group having 6 to 12 carbon atoms which may have a substituent. Further, Ar represents an arylene group having 6 to 13 carbon atoms which may have a substituent. Further, M represents a Group 9 element or a Group 10 element.
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- Copper-mediated direct arylation of 1,3,4-oxadiazoles and 1,2,4-triazoles with aryl iodides
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The copper-mediated direct arylation of 1,3,4-oxadiazoles and 1,2,4-triazoles with aryl iodides proceeds efficiently in the presence of suitable ligands and bases. This method allows the installation of a variety of aryl moieties bearing a functional group such as ketone, ester, or nitrile so as to enable the facile construction of various functionalized oxadiazole and triazole core π systems.
- Kawano, Tsuyoshi,Yoshizumi, Tomoki,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
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supporting information; experimental part
p. 3072 - 3075
(2009/12/06)
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- A convenient synthesis of 4,5-disubstituted 1,2,4-triazoles functionalized in position 3
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A convenient approach to 4,5-disubstituted 3-hydroxymethyl-1,2,4-triazoles as well as to the corresponding 3-chloromethyl and 3-carboxaldehyde derivatives was developed starting from 3-mercapto-1,2,4-triazoles which can, in turn, be readily obtained from
- Ivanova, Natalia V.,Sviridov, Sergey I.,Shorshnev, Sergey V.,Stepanov, Aleksander E.
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p. 156 - 160
(2007/10/03)
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- Base-induced Dehydrosulfinatocyclization of N-Alkyl-N-phenylsulfonyl-N''-arylbenzamidrazones to 3,4-Diaryl-4H-1,2,4-triazoles
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3,4-Diaryl-4H-1,2,4-triazoles were obtained in good to comparable yields by the reaction of N-alkyl-N-phenylsulfonyl-N''-arylbenzamidrazones with sodium hydride.The reaction probably proceeds via the elimination of benzenesulfinic acid and the oxidative cyclization of N-alkylidene-N''-arylbenzamidrazones generated by the base-catalyzed isomerization of azo intermediates.
- Ito, Suketaka,Tanaka, Yumo,Kakehi, Akikazu
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p. 544 - 547
(2007/10/02)
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