89060-64-0Relevant academic research and scientific papers
Transmission of substituent effects via 1,2,4-triazole ring residue
Shawali, Ahmad S.,Abbas, Ikhlass M.,Abdallah, Magda A.,Fahmi, Abdelgawad A.,Ahmad, Nada F.
, p. 1012 - 1016 (2007/10/02)
The ionization constants of a series of 5-phenyl-3-substituted phenyl-1,2,4-triazole-3-carboxylic acids (2a-j), prepared by the base catalysed rearrangement of 2-phenyl-4-arylazo-5-oxazolones (1a-j), and the rate of alkaline hydrolysis of the correspondin
An Improved Synthesis of 1H-1,2,4-Triazoles from C-Triphenylphosphinimino-hydrazones
Bruche, Luca,Garanti, Luisa,Zecchi, Gaetano
, p. 772 - 774 (2007/10/02)
1-Phenyl-1H-1,2,4-triazoles 5a-h are prepared in good yields by reaction of the triphenylphosphine imide 1 with acyl chlorides 2a-h and subsequent base treatment of the intermediate phosphonium salts 3a-h.
Ketone Enamines as Dipolarophiles towards C-Azidohydrazones
Bruche, Luca,Garanti, Luisa,Zecchi, Gaetano
, p. 1903 - 1906 (2007/10/02)
The reaction of methyl azido(phenylhydrazono)acetate (1) with the enamines (4)-(7) leads to different kinds of ring-closed products, namely 1,2,4-triazines (8)-(10), 1,2,3-triazoles (12)-(15), and 1,2,4-triazoles (16)-(19).An open-chain azo compound (20) is also formed.In one case, an intermediate 4,5-dihydro-1H-1,2,3-triazole (11) has been isolated.A mechanistic picture is proposed involving preliminary cycloaddition of the azido group to the enamine and subsequent reaction of the 4,5-dihydro-1H-1,2,3-triazoles according to various concurrent pathways.
Reaction of Hydrazonoyl Halides with N-Aryl Substituted Benzamidines
Anzani, Fulvio,Croce, Piero Dalla,Stradi, Riccardo
, p. 311 - 313 (2007/10/02)
The reaction between hydrazonoyl halides and N-arylbenzamidines leads to the simultaneous formation of products derived from a substitution and a cycloaddition reaction via two independent paths.
