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## Synthesis of 4-(2-methacryloyloxyethoxy)phenyl› diphenylsulfonium 1, 1,3,3,3-pentafluoro-2-(meth› acryloyloxy )propane-l-sulfonate (PAG-1) 

4-(2-methacryloyloxyethoxy)phenyldiphenylsulfonium 4-methylbenzenesulfonate of Synthesis Example 1-1 and tri› ethylanm10nium 1, 1,3,3,3-pentafluoro-2-(methacryloyloxy) propane-1-sulfonate of Synthesis Example 1-2 are mixed and ion-changed in a dichloromethane-water system. An organic layer after washing by water was concentrated under reduced pressure, the residue was purified by silica gel column chro› matograph, and thereby the intended substance was obtained as an oily substance. The structure of the intended substance is shown below. 

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Spectrum data of the intended substance thus obtained are shown below. Results of the nuclear magnetic resonance spectra (1H-NMR, $^{19}$F-NMR/DMSO-d$_{6}$) are showninFIG.1 and FIG. 2, respectively. Meanwhile, trace amounts of residual solvents ( diisopropyl ether and water) are detected in $^{1}$H-NMR. 

IR Spectrum (IR(KBr); cm- 1 ): 1743, 1717, 1590, 1496, 1477, 1448, 1372,1311, 1296,1264, 1215, 1169,1133, 1069, 994, 949, 902, 839, 750, 684 and 642 cm- 1 

Time-of-Flight Mass Spectrum Analysis (TOFMS; MARDI): POSITIVE: M+ $^{391 }$(corresponding to C$_{24}$H$_{23}$ 0$_{3}$ S) NEGATIVE: M- 297 ( corresponding to C$_{7}$H$_{6}$F $_{5}$0 $_{5}$S) 

## Synthesis of 4-hydroxyphenyldiphenylsulfonium 1, 1,3 ,3 ,3-pentafluoro-2-( methacry loy loxy )propane- 1-sulfonate 

4-hydroxyphenyldiphenylsulfonium 4-methylbenzene› sulfonate and triethylammonium 1,1,3,3,3-pentafluoro-2- (methacryloyloxy)propane-l-sulfonate of Synthesis Example 1-2 are mixed and ion-changed in a dichlo› romethane-water system. An organic layer after washing by 65 water was concentrated under reduced pressure and was used for the next reaction as a crude substance. 

-continued 

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## Synthesis Example 1-3 

## Synthesis Example 1-4 

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## Synthesis of 4-methacryloyloxyphenyldiphe› nylsulfonium 1,1,3,3,3-pentafluoro-2-(methacryloy› loxy)propane-l-sulfonate (PAG-2) 

After 20 mmoles of 4-hydroxyphenyldiphenylsulfonium 1, 1,3 ,3 ,3-pentafluoro-2-( methacry loy loxy )propane-1-sul› fonate obtained in Synthesis Example 1-4, 22 mmoles of methacrylic acid anhydride, 24 mmoles oftriethylamine and 4 mmoles of N,N-dimethylaminopyridine were mixed and stirred overnight, the reaction was terminated by adding dilute hydrochloric acid to the reaction solution. Thereafter, an organic layer of the quenched reaction solution was sepa› rated, and then washed by water, and dichloromethane was removed by evaporation under reduced pressure. Methyl isobutyl ketone was added into the residue, and an organic layer was separated and then washed by water, and methyl isobutyl ketone was removed by evaporation under reduced pressure. The obtained residue was washed by diisopropyl ether, and thereby the intended substance was obtained as an oily substance (with yield of 76%). The structure of the intended substance is shown below. 

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## Synthesis Example 1-5 

