| abstract |
[Formula 1] (wherein R 1 is hydrogen, methoxycarbonyl group, acetyl group, benzyloxycarbonyl group, R 2 is hydrogen, C 1 -C 4 alkyl group, R 3 is C 1- C 4 alkyl group, benzyl group optionally substituted with C 1 to C 4 alkyl group, or α-naphthylmethyl group, R 4 represents any of C 1 to C 4 alkyl group X represents a bis (trifluoromethanesulfonyl) imide group.) A novel sulfonium compound represented by This compound can be synthesized by an ion exchange method or the like. [Effect] This novel compound is useful as an epoxy curing initiator. [Chemical 1] |