2-Methoxy-5-(N-methylmethanesulfonamido)-N-tetrahydrofurfurylbenzamide (II), which is prepared from (I) and tetrahydrofurfurylamine, is treated with SOCl2 in dichloroethane to give the dichloro compound (III). Treatment of (III) with EtNH2 gives title compound.
5-(N-Methylmethanesulfonamido)benzoic acid (I) is treated with thionyl chloride and 2-amino-methyl-1-ethyl-pyrrolidine to give title compound.