65389-89-1Relevant academic research and scientific papers
Efficient and one-pot catalytic synthesis of 2-imidazolines and bis-imidazolines with p-toluenesulfonic acid under solvent free conditions
Nasr-Esfahani, Masoud,Montazerozohori, Morteza,Mehrizi, Safie
, p. 249 - 254 (2011)
A practical, efficient, and inexpensive method for the synthesis of 2-imidazoline from the reaction of nitriles with ethylenediamine or 1,2-propanediamine using p-toluenesulfonic acid or pyridinium p-toluenesulfonate under reflux conditions is reported. This catalyst can be successfully applied for the chemoselective conversion of dicyanobenzenes to corresponding mono- and bis-imidazolines. The applications of these catalysts are feasible because of easy preparation, easy handling, stability, inexpensive, good activity, and eco-friendly.
Efficient catalytic synthesis of 2-imidazolines and bis-imidazolines with silica supported tungstosilicic acid
Nasr-Esfahani, Masoud,Montazerozohori, Morteza,Moghadam, Majid,Akhlaghia, Parisa
experimental part, p. 97 - 109 (2010/08/04)
A rapid and efficient preparation of 2-imidazolines and bis-imidazolines by the reaction of ethylenediamine or 1,2-propanediamine with nitriles in the presence of catalytic amounts of tungstosilicic acid supported on SiO 2 under reflux condition, is reported. The advantages of this procedure are moderate reaction times, good to high yields and the ability to carry out the large scale reactions. ARKAT USA, Inc.
