%0 Journal Article
%T BF3.SiO2: an efficient catalyst for the synthesis of azo dyes at room temperature
%A Bi Bi Fatemeh Mirjalili
%A Abdolhamid Bamoniri
%A Ali Akbari
%J Current Chemistry Letters
%D 2012
%I Growing Science
%X A rapid one-pot method has been developed for the synthesis of azo dyes via  sequential diazotization¨Cdiazo coupling of aromatic amines with coupling agents at room  temperature in the presence of BF3.SiO2 as acidic catalyst. The obtained aryl diazonium salts bearing silica supported boron tri-flouride counter ion  was sufficiently stable to be kept at room  temperature in the dry state.
%K Azo dye
%K BF3.SiO2
%K Stable diazonium salts Diazotization
%K Lewis acid
%U http://www.growingscience.com/ccl/Vol1/ccl_2012_17.pdf