%0 Journal Article %A Mohammad Ali Zolfigol %A Ahmad Reza Moosavi-Zare %A Mahmoud Zarei %T Friedel–Crafts alkylation of 4-hydroxycoumarin catalyzed by sulfonic-acid-functionalized pyridinium chloride as a new ionic liquid %J Comptes Rendus. Chimie %D 2014 %P 1264-1267 %V 17 %N 12 %I Elsevier %R 10.1016/j.crci.2014.03.002 %G en %F CRCHIM_2014__17_12_1264_0