TETRAZOLES. ACYLATION OF TETRAZOLES UNDER THE CONDITIONS OF PHASE-TRANSFER CATALYSIS
The acylation of substituted 5-aryltetrazoles with benzoyl chloride in the presence of tetrabutylammonium bromide in the two-phase methylene chloride-water system leads to the formation of isomeric 1-benzoyl- and 2-benzoyl-5-aryltetrazoles.The ratio of the isomers depens on the nature of the substituents in the phenyl ring; electron-withdrawing substituents increase the proportion of the N2 isomer.The respective 2,5-disubstituted 1,3,4-oxadiazoles are formed during thermolysis, irrespective of the position of the benzoyl group in the N-benzoyltetrazoles.
Osipova, T. F.,Koldobskii, G. I.,Ostrovskii, V. A.
p. 2248 - 2252
(2007/10/02)
ACYLATION OF 5-ARYLTETRAZOLES UNDER THE CONDITIONS OF PHASE-TRANSFER CATALYSIS
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Osipova, T. P.,Koldobskii, G. I.,Ostrovskii, V. A.
p. 1018 - 1019
(2007/10/02)
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