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4-Azido-3-phenylazo

Das ebenfalls aus 4-Amino-3-azido-furazan mit Anilin bei 150° zugangliche 4-Amino-3-phe-nylazo-furazan reagiert mit Nitrosyl-Verbindungen bei anschlieBender Behandlung mit Azid-Ionen zu 4-Azido-3-phenylazo-furazan. Letzteres liefert in der Warme ebenfalls das Betain I259 ... [Pg.676]

Sowohl bei der Umsetzung von 4-Amino-3-azido-furazan mit Nitrosobenzol als auch durch Erwarmen von 4-Azido-3-phenylazo-furazan wird 5-Phenyl-(1,2J-azeniaazoniaazolo[4,5-c fu-razan) er nalten259 ... [Pg.681]

The procedure given here is essentially that described previously by the submitters2 and is based on the early work of Knoevenagel.8 2-Phenylindazole has been prepared by reduction of N-(o-nitrobenzyl)aniline with tin and hydrochloric acid,4 by reduction of N-(o-nitrobenzyl) -N-nitrosoaniline with tin and hydrochloric acid,5 by dehydration of 2-(phenylazo)benzyl alcohol,6 by elimination of acetic acid from 2-(phenylazo)benzyl acetate,7 by dehydrogenation of 3,3a,4,5,6,7-hexahydro-2-phenyl-indazole with sulfur,8 and by thermal decomposition of o-azido-benzalaniline.9... [Pg.145]

Das bei der Umsetzung von 3,4-Diamino-furazan mit Nitroso-benzol erhaltene 4-Amino-3-phenylazo-furazan (I 27%) liefert mit Blei(IV)-acetat 5-Phenyl-(1,2,3-azeniaazoniaazolo 4,5-c]-furazan) (II 28%)257 258, das auch aus 4-Amino-3-azido-furazan mit Nitroso-benzol zugang-lich ist259 ... [Pg.675]

Piperidin l-(4-Methoxy-phenylazo)-E16a, 1195 (Ar-N + Amin) Propan l-Azido-2-phenyl-l-propylo-xy- E14a/2, 291 (0-Si-enol/HN3/ R-OH)... [Pg.1046]

The y-triazole ring is also produced by intramolecular cyclization of an azide substituent to an azo group in this way the mesoionic v-triazolo[4,5-(/]-t -triazole (58) was obtained by heating 4-azido-2-phenyl-5-phenylazo-u-triazole (57) in decalin. ... [Pg.198]


See other pages where 4-Azido-3-phenylazo is mentioned: [Pg.670]    [Pg.235]    [Pg.602]    [Pg.720]    [Pg.579]    [Pg.227]   
See also in sourсe #XX -- [ Pg.676 , Pg.681 ]




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2-[4- phenylazo

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