Process for production of sulfonium compounds
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United States of America Patent
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Jun 4, 1991
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N/A
app pub date -
May 26, 1989
filing date -
Jun 16, 1988
priority date (Note) -
Expired
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Abstract
A process for producing a sulfonium compound of the formula (III) ##STR1## which process comprises reacting a p-dialkylsulfoniophenol of the formula (I) ##STR2## and a carbonyl halogenide compound of the formula (II) ##STR3## in the presence of a secondary amine having a structure in which two secondary alkyl groups are linked to the nitrogen atom, wherein R.sup.1 and R.sup.2 are the same or different and are independently an alkyl group having 1 to 4 carbon atoms, X.sup.1 is a hydrogen atom, a halogen atom or an alkyl group having 1 to 4 carbon atoms, Y.sup.- is a halogen anion, a perchlorate anion, an alkylsulfate anion, a hydrogensulfate anion or a p-toluenesulfonate anion, R is an alkyl group having 1 to 20 carbon atoms, a tert-butoxy group, a benzyloxy group, a p-methoxybenzyloxy group, a phenyl group or a 9-fluorenylmethoxy group, and X.sup.2 is a halogen atom, wherein the reacting is carried out in a solvent selected from the group consisting of polar aprotic solvents, ethers and halogenated hydrocarbons, at a temperature of -80.degree. C. to 30.degree. C. and for a reaction time of 0.5 hour to 10 hours.
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