Patent ID: 6111143
Filing Date: 2000-08-29
Classification: C07C,Y02P

Abstract:
A method of manufacturing the sulfonium salt represented by the following formula I ##STR29## wherein Ra, Rb, and Rc are independently an alkyl group, aryl group, allyl group or benzyl group, and n is an integer of 0 to 20, which comprises:preparing the sulfonium salt in a one-step reaction by stirring at a temperature in the range of -80 to 100.degree. C., in the presence of perfluoroalkane sulfonic anhydride as defined below, a sulfoxide compound as defined below and an aromatic compound as defined below, said sulfoxide compound and said aromatic compound being dissolved in an organic solvent,said sulfoxide compound being represented by the following formula II ##STR30## wherein Ra, Rb, and Rc are the same as defined above, said aromatic compound being represented by the following formula III ##STR31## wherein R.sub.1 to R.sub.49 are independently hydrogen atom, alkyl group, vinyl group, allyl group, aryl group, benzyl group, hydroxy group, thiol group, halogen atom, ester group, aldehyde group, alkoxy group, thioalkoxy group, phenoxy group, thiophenoxy group, or nitrile group, wherein the amount of said aromatic compound is in the range of 1 to 100 equivalents to said sulfoxide compound,said perfluoroalkanesulfonic anhydride being represented by the following formula IV[CF.sub.3 (CF.sub.2).sub.n SO.sub.2 .brket close-st..sub.2 O(IV)wherein n is the same as defined above, and wherein the amount of said perfluoroalkanesulfonic anhydride is in the range of 1 to 5 equivalents to said sulfoxide compound.