Patent ID: 7737275
Filing Date: 2010-06-15
Classification: C07D

Abstract:
1. A process for preparing a compound of formula I where the variables are each defined as follows: R R X Ar is phenyl, which may be mono- or polysubstituted by the following groups: hydrogen, halogen, cyano, C A is —NR comprising reacting a phenyl iso(thio)cyanate of the formula II where the variables X with an enamine of the general formula III where R R R in the presence of from 1.8 to 2.6 base equivalents per mole of the phenyl iso(thio)cyanate of the formula II; and, if appropriate, in a further step, reacting the resulting 3-phenyl(thio)uracil or 3-phenyldithiouracil of the formula I where R where L to give a 3-phenyl(thio)uracil or 3-phenyldithiouracil of the formula I where R