To provide a new sulfonium salt useful as a photo-acid initiator or a photo-radical initiator, when a photosensitive curable resin is polymerized, and to provide a method for producing the sulfonium compound by a single-stage reaction at a high yield, not using an expensive sulfoxide compound as a starting material, nor a Grignard reagent.
A compound of formula I [R1 is H, a 1-20C alkyl, a halogen, an alkoxyl or the like; R2 is a 1-20C alkyl, aryl or allyl; (n) is 0-20], preferably a compound of formula II. The compound is obtained by reacting (A) a sulfide compound expressed by formula III with (B) a perfluoroalkanesulfonic anhydride expressed by the formula: [CF3(CF2)nSO2]2O, wherein the component B is used in an amount of 0.2-2.0 mol per mol of the component A, and the reaction is carried out at a reaction temperature within the range of -100 to 100°C.
KIM JAE YONG
LEE JONG BUM
Next Patent: PHARMACEUTICAL COMPOSITION COMPRISING ANTAGONIST OF GONADOTROPIN-RELEASING HORMONE