- N-Cyanazoles in Synthesis of Amides of Carboxylic Acids
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The reaction of carboxylic acids with 1-cyanimidazole, 1-cyanobenzimidazole, and 1-cyano-1,2,4-triazole leads to the formation of 1-acylazoles used in situ in synthesis of anilides of the corresponding carboxylic acids.
- Purygin,Pan'kov
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p. 871 - 873
(2007/10/03)
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- PHOTOCHEMISTRY OF N-ACYLAZOLES. VI). PHOTOREACTIVITIES OF 1-ACYL-1,2,4-TRIAZOLES AND OF 2-ACYLTETRAZOLES
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Contrary to the findings in the photolysis of N-acylimidazoles (2) irradiation of 1-acyl-1,2,4-triazoles afforded no photo-Fries product, but instead products formed via the corresponding acyl radicals and aldehydes.Photolysis of 2-acyltetrazoles gave in part the same products as those obtained from the irradiation of the corresponding acyl-triazoles as well as 2-alkyl-1,3,4-oxadiazoles.N-Acyltetrazoles didn't give any photo-Fries product neither.
- Murato, Kazuo,Yatsunami, Takashi,Iwasaki, Shigeo
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p. 588 - 605
(2007/10/02)
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- ETUDE DANS LA SERIE DES ORGANOSILYLAZOLES I. ACTION DES HALOGENURES D'ALKYLE, DES CHLORURES D'ACIDE ET DES CETONES HALOGENEES
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The reactivity of organosilylamines of imidazole, pyrazole, 1,2,4-triazole and benzotriazole towards alkyl halides, acidic chlorides and halogenated ketones has been studied.Except for 1-trimethylsilylimidazole, which gives a mixed quaternary salt, reactions with primary halides lead to the corresponding 1-alkylated heterocyclic compounds in high yields; in each case only one isomer is obtained (1-alkyl-1,2,4-triazole and 1-alkylbenzotriazole).Similarly acidic chlorides give 1-acylated derivatives in quantitative yields.Finally α- or β-halogenated ketones show different behaviour and give the addition or substitution products.
- Gasparini, J. P.,Gassend, R.,Maire, J. C.,Elguero, J.
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p. 141 - 150
(2007/10/02)
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