Mateja Mihelač (Author), Ana Siljanovska (Author), Janez Košmrlj (Author)

Abstract

Herein we present a mild, simple and environmentally friendly diazotization protocol of aromatic and hetero-aromatic anilines into stable diazonium salts that surpass previously reported procedures. The reaction proceeds with tert-butyl nitrite in the presence of an equimolar amount or small excesses of p toluenesulfonic acid in ethyl acetate, at room temperature. o-Phenylenediamines yield benzotriazolium tosylates. The resulting diazonium tosylates proved to be bench stable over a long period of time. In selected examples, diazonium salts were let to react with activated aromatic compounds including 2-naphthol and aniline derivatives into the corresponding azo dyes.

Keywords

diazotiranje;diazonijeve soli;azo spojine;p-toluensulfonska kislina;diazotization;diazonium salts;azo compounds;p-toluenesulfonic acid;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
UDC: 54-304.4
COBISS: 26340867 Link will open in a new window
ISSN: 0143-7208
Views: 446
Downloads: 147
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: diazotiranje;diazonijeve soli;azo spojine;p-toluensulfonska kislina;
Type (COBISS): Article
Pages: str. 1-7
Issue: ǂVol. ǂ184
Chronology: Jan. 2021
DOI: 10.1016/j.dyepig.2020.108726
ID: 12642532