Synthesis of a nitrite functionalized star-like poly ionic compound as a highly efficient nitrosonium source and catalyst for the diazotization of anilines and subsequent facile synthesis of azo dyes under solvent-free conditions

Autor:	Hassan Valizadeh, Jalal Ghorbani, Ashkan Shomali, Saeideh Noorshargh
Rok vydání:	2015
Předmět:	Nitrosonium Process Chemistry and Technology General Chemical Engineering Ionic bonding Photochemistry Heterogeneous catalysis Catalysis chemistry.chemical_compound Aniline chemistry Reagent Polymer chemistry Ionic compound Nitrite
Zdroj:	Dyes and Pigments. 117:64-71
ISSN:	0143-7208
DOI:	10.1016/j.dyepig.2015.02.007
Popis:	Nitrite functionalized star-like poly ionic (NFSPI) compound was synthesized and used as a highly efficient nitrosonium source and catalyst for the conversion of aniline derivatives to diazonium salts. Azo dyes were prepared via in situ azo-coupling reaction of these diazoniums with active aromatic compounds under solvent-free conditions in very short reaction time in excellent yields. NFSPI plays dual role as a three-dimensional nitrosonium source and catalyst because of its poly ionic characteristic. The isolated products were confirmed with FT-IR spectrum, 1H-NMR, 13C-NMR spectroscopy and CHNSO analysis. The structure of heterogeneous reagent and catalyst was confirmed by FT-IR spectrum, SEM images, EDX and CHNSO analysis. Yields and reaction times for the synthesis of a variety of products via this procedure were compared with reported values in literature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::84fb33093a6770d4c0f2efa341bcd22f https://doi.org/10.1016/j.dyepig.2015.02.007 Zobrazit plný text záznamu Full Text from ScienceDirect