- Method of manufacturing dimethylsulfonium compd.
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PROBLEM TO BE SOLVED: To provide a method for producing a sulfonium compound with high purity, in which no inorganic ion as impurity is not present, with a high yield. SOLUTION: The method for producing a sulfonium compound represented by formula includes a step to extract a 4-substituted phenyl dialkyl sulfonium polyfluoride compound by an organic solvent including isopropyl acetate as a main component (however, in formula, R1represents any of hydrogen, a methoxycarbonyl group, an acetyl group, or a benzoyl group, R2represents any of hydrogen, a halogen, or a 1-4C alkyl group, and R3represents any of a 1-4C alkyl group, a benzyl group optionally substituted by a 1-4C alkyl group, or α-naphthylmethyl group, and R4represents a 1-4C alkyl group; X represents any of SbF6, PF6, AsF6, BF4, CF3SO3, (CF3SO2)2N, or B(C6F5)4). COPYRIGHT: (C)2013,JPOandINPIT
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Paragraph 0036
(2016/10/10)
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