One-pot syntheses of 5-amino-1-aryltetrazole derivatives
A novel facile route for the introduction of 5-amino and 5-alkylamino substituents into 1-aryltetrazoles has been developed. A range of 5-amino-1-aryltetrazoles was obtained directly from the corresponding 1-aryltetrazoles in one pot by consecutive ring-opening, azidation and intramolecular cyclization. 5-Alkylamino-1-aryltetrazoles were formed by a similar mechanism from 1,4-disubstituted tetrazolium salts. An influence of the nature of aryl substituents and reaction conditions on the regioselectivity of the intramolecular cyclization of intermediate guanyl azides is revealed. Georg Thieme Verlag Stuttgart.
Vorobiov, Andrey N.,Gaponik, Pavel N.,Petrov, Petr T.,Ivashkevich, Oleg A.
p. 1307 - 1312
(2007/10/03)
Photochemical Elimination of Molecular Nitrogen from Phenyl-Substituted 1,4-Dihydro-5-imino-5H-tetrazoles. Products of Phenyl-Substituted Tris(imino)methane Diradicals
The reaction of 5-(methylthio)tetrazolium salts 11 with primary amines produces the phenyl-substituted 5-iminotetrazoles 7b - h.In contrast to the results of the electron impact-induced fragmentation in the mass spectrometer, irradiation of the 5-iminotet
Quast, Helmut,Fuss, Andreas,Nahr, Uwe
p. 2164 - 2185
(2007/10/02)
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