The reaction between 5-nitro-2,1-benzisothiazole-3-di- azonium species and N-substituted anilines produces the 1- (5-nitro-2,1-benzisothiazol-3-yl)-3,3-disubstituted triazenes 1. These triazenes are highly stable, and even in strongly acidic medium (0.5 molL−1 H2SO4) they are only slowly de- composed back to the diazonium ion and substituted anilin- ium ion (for the N-ethyl derivative in 0.5 mol·L−1 H2SO4 at 25 °C, t1/2 7 h). A series of six triazenes were characterised by their 1H and 13C NMR spectra and mass spectra. Two of the triazenes were also identified by X-ray crystallography.
Structure and reactivity of 3,3-disubstituted 1-(5-nitro-2,1-benzisothiazol-3-yl)triazenes
BERTOLASI, Valerio;
2003
Abstract
The reaction between 5-nitro-2,1-benzisothiazole-3-di- azonium species and N-substituted anilines produces the 1- (5-nitro-2,1-benzisothiazol-3-yl)-3,3-disubstituted triazenes 1. These triazenes are highly stable, and even in strongly acidic medium (0.5 molL−1 H2SO4) they are only slowly de- composed back to the diazonium ion and substituted anilin- ium ion (for the N-ethyl derivative in 0.5 mol·L−1 H2SO4 at 25 °C, t1/2 7 h). A series of six triazenes were characterised by their 1H and 13C NMR spectra and mass spectra. Two of the triazenes were also identified by X-ray crystallography.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
