Synthesis of Some Novel Arylazo Disperse Dyes Derived from 5-Amino-tetrazolo[1,5-a]pyrimidin-7-ol as Coupling Component and Investigation of Their Absorption Spectra

Autor:	Meng-Shen Cai, Yuan Lu, Shi-Kui Wu, Chao-Jun Chen, Jun-Bao Liu
Rok vydání:	2013
Předmět:	Solvent chemistry.chemical_compound Aniline Absorption spectroscopy Chemistry Elemental analysis Yield (chemistry) Organic Chemistry Polymer chemistry Proton NMR Organic chemistry Fourier transform infrared spectroscopy Absorption (chemistry)
Zdroj:	Journal of Heterocyclic Chemistry. 50:1441-1445
ISSN:	0022-152X
DOI:	10.1002/jhet.944
Popis:	5-amino-tetrazolo[1,5-a]pyrimidin-7-ol (I) was synthesized by reaction of 5-amino-tetrazole with ethyl cyanoacetate in excellent yield. A series of novel 5-amino-6-arylazotetrazolo[1,5-a]pyrimidin-7-ol dyes were prepared by linking o-, m-, p-anisidine, o-, m-, p-chloroaniline, o-, m-, p-nitroaniline, o-, m-, p-toluidine and aniline to 5-amino-tetrazolo[1,5-a]pyrimidin-7-ol (I). The structure of these dyes were confirmed by UV-vis, FTIR and 1H NMR spectroscopic techniques and elemental analysis. The effect of varying pH and solvent upon the absorption ability of 5-amino-6-arylazotetrazolo[1,5-a]pyrimidin-7-ol sudstituted with electron-withdrawing and electron-donating groups at their o-, m-, p-position was examined.
Databáze:	OpenAIRE
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