. "P\u0159ikryl, Josef" . "396905" . . "19" . "1434-193X" . . "Stable Triazenes Derived from 2-Alkylaminonaphthalenes and 5 Nitrobenzo[c]-1,2-thiazole-3-diazonium Hydrogensulphate" . "Svobodov\u00E1, Mark\u00E9ta" . . . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . . . . . . . "A calculation using the DFT method confirmed that the extraordinary stability of the triazenes formed by an azo coupling reaction of 5-nitrobenzo[c]-1,2-thiazole-3-diazonium and primary or secondary aromatic amines is caused by the fact that these substances are protonated at the heterocyclic nitrogen atom and not at the nitrogen atom of the triazene grouping ?N=N?N(R)Ar. Stable triazenes are also formed by reaction of 5-nitrobenzo[c]-1,2-thiazole-3-diazonium with 2-alkylaminonaphthalenes. In the case of the azo coupling reaction with 2-methylamino- and 2-ethylaminonaphthalene the content of triazenes is almost 50 % in the product mixture with the isomeric azo compounds. The structure of triazenes was confirmed by X-ray analysis." . "Stable Triazenes Derived from 2-Alkylaminonaphthalenes and 5 Nitrobenzo[c]-1,2-thiazole-3-diazonium Hydrogensulphate"@en . "Azo coupling; diazoniums; triazenes; density functional calcultations; amines"@en . "V\u00FDpo\u010Dty vyu\u017E\u00EDvaj\u00EDc\u00ED DFT medodu potvrdily, \u017Ee mimo\u0159\u00E1dn\u00E1 stabilita triazen\u016F vznikl\u00FDch azokopula\u010Dn\u00ED reakc\u00ED 5-nitrobenzo[c]-1,2-thiazol-3-diazonia s prim\u00E1rn\u00EDmi a sekund\u00E1rn\u00EDmi aromatick\u00FDmi aminy je zp\u016Fsobena faktem, \u017Ee tyto l\u00E1tky jsou protonov\u00E1ny na dus\u00EDkov\u00E9m atomu heterocyklick\u00E9ho skeletu a nikoliv na dus\u00EDku triazenov\u00E9ho uspo\u0159\u00E1d\u00E1n\u00ED ?N=N?N(R)Ar. Stabiln\u00ED triazeny vznikaly tak\u00E9 reakc\u00ED 5-nitrobenzo[c]-1,2-thiazol-3-diazonia s 2-alkylaminonaftaleny. T\u00E9m\u011B\u0159 50% pod\u00EDl triazen\u016F v reak\u010Dn\u00ED sm\u011Bsi je v p\u0159\u00EDpad\u011B azokopula\u010Dn\u00ED reakce s 2-methylamino- and 2-ethylaminonaftaleny vedle izomern\u00EDch azoslou\u010Denin. Struktury triazen\u016F byly potvrzeny X-ray anal\u00FDzami."@cs . . "Stable Triazenes Derived from 2-Alkylaminonaphthalenes and 5 Nitrobenzo[c]-1,2-thiazole-3-diazonium Hydrogensulphate" . "Nachtigall, Petr" . "25310" . "P(LC512), Z(MSM0021627501)" . . "Jansa, Petr" . "Mach\u00E1\u010Dek, Vladim\u00EDr" . "RIV/00216275:25310/08:00007781!RIV09-MSM-25310___" . . "Stabiln\u00ED triazeny p\u0159ipraven\u00E9 z 2-alkylaminonaftalen\u016F a 5-nitrobenzo[c]-1,2-thiazol-3-diazonium-hydrogensulf\u00E1tu"@cs . . . "R\u016F\u017Ei\u010Dka, Ale\u0161" . "\u010Cern\u00FD, Michal" . "-" . "7"^^ . . . "7"^^ . . "A calculation using the DFT method confirmed that the extraordinary stability of the triazenes formed by an azo coupling reaction of 5-nitrobenzo[c]-1,2-thiazole-3-diazonium and primary or secondary aromatic amines is caused by the fact that these substances are protonated at the heterocyclic nitrogen atom and not at the nitrogen atom of the triazene grouping ?N=N?N(R)Ar. Stable triazenes are also formed by reaction of 5-nitrobenzo[c]-1,2-thiazole-3-diazonium with 2-alkylaminonaphthalenes. In the case of the azo coupling reaction with 2-methylamino- and 2-ethylaminonaphthalene the content of triazenes is almost 50 % in the product mixture with the isomeric azo compounds. The structure of triazenes was confirmed by X-ray analysis."@en . "European Journal of Organic Chemistry" . "Stable Triazenes Derived from 2-Alkylaminonaphthalenes and 5 Nitrobenzo[c]-1,2-thiazole-3-diazonium Hydrogensulphate"@en . "6"^^ . "Stabiln\u00ED triazeny p\u0159ipraven\u00E9 z 2-alkylaminonaftalen\u016F a 5-nitrobenzo[c]-1,2-thiazol-3-diazonium-hydrogensulf\u00E1tu"@cs . . "RIV/00216275:25310/08:00007781" . . "[D031CE1188E7]" . . .