Patent ID: 6313303
Filing Date: 2001-11-06
Classification: C07D

Abstract:
A method for producing a sulfoxide (II) represented by the following formula (II): ##STR12##(wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the same meanings as defined below), which comprises the step of oxidizing a thioether (I) represented by the following formula (I): ##STR13##(wherein R.sup.1 represents hydrogen atom, methoxy group or difluoromethoxy group; R.sup.2 represents methyl group or methoxy group; R.sup.3 represents 3-methoxypropoxy group, methoxy group or 2,2,2-trifluoroethoxy group; and R.sup.4 represents hydrogen atom or methyl group) with a) a perborate in the presence of an acid anhydride or a metal catalyst or b) an N-halosuccinimide, a 1,3-dihalo-5,5-dimethylhydantoin or dichloroisocyanurate in the presence of a base.