Patent ID: 6127575
Filing Date: 2000-10-03
Classification: C07C,Y02P

Abstract:
A process for preparing a N,N'-disubstituted urea of the following chemical formula I by reacting an amine with a CO/O.sub.2 mixture gas in a solvent and in the presence of a catalyst system comprising at least one selenium compound selected from the group consisting of SeO.sub.2, (CH.sub.3 O)Se(O)(OH) and (CH.sub.3 CH.sub.2 O)Se(O)(OH) as a main catalyst component and an alkali metal carbonate as a co-catalyst:(RNH).sub.2 CO (I)wherein, R is an alkyl group of C.sub.1 -C.sub.18, a cyclohexyl group, a phenyl group or a benzyl group.