| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing 1,3-dialkyl-2-imidazolidinones enabling easy separation of a catalyst after reaction, having high catalytic activity and reaction selectivity of the catalyst used in the reaction and proceeding the reaction in high efficiency. SOLUTION: The method for producing the 1,3-dialkyl-2-imidazolidinones comprises reaction of an N,N'-dialkylethylenediamine with carbon dioxide under pressure (preferably 0.2-30 MPa) in the presence of a silica catalyst (mesoporous silica, amorphous silica, silica alumina, etc.). COPYRIGHT: (C)2010,JPO&INPIT |
