Aromatic sulfonium salt compound
A technology of aromatic sulfonium salts and compounds, applied in organic chemistry, instruments, optomechanical equipment, etc., can solve problems such as difficult patterning, insufficient developability, insufficient solubility of aromatic sulfonium salt compounds, etc., and achieve curability Excellent, high-resolution results
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Embodiment 1-1
[0084] [Example 1-1] Synthesis of trifluoromethanesulfonate of compound No.1
[0085] 72.11 g (0.735 mol) of concentrated sulfuric acid was added to a 200 ml four-necked flask, nitrogen substitution was performed, and it cooled until the inner temperature became 10 degreeC. Add 11.24 g (0.048 mol) of bis(hydroxyphenyl) sulfoxide, dropwise add 12.33 g (0.04 mol) of 3-fluoro-4-phenylthio-benzophenone dissolved in 12.33 g of chlorobenzene, and Stirring was carried out at 30°C for 3 hours. Next, 120 g of ice water, 120 g of methanol, and 120 g of toluene were mixed in a 1 L beaker, and the reaction liquid was added thereto, stirred for 1 hour, and left still. The upper layer was removed, and 200 ml of dichloromethane and 7.49 g (0.048 mol) of lithium trifluoromethanesulfonate were added to the lower layer, followed by stirring for 1.5 hours. The dichloromethane layer was washed 3 times with 120 g of water, and the solvent was distilled off, and the obtained crude product was pur...
Embodiment 1-2
[0088] [Example 1-2] Synthesis of Antimony Hexafluoride Salt of Compound No.1
[0089] Except using KSbF instead of lithium triflate 6 Except 13.19 g (0.048 mol), it synthesized similarly to Example 1-1, and obtained the antimony hexafluoride salt of compound No. 1 (yield 6.49 g, yield 21.3%, and HPLC purity 93.2%).
[0090] [chemical 7]
[0091]
Embodiment 1-3
[0092] [Example 1-3] Synthesis of trifluoromethanesulfonate of compound No.3
[0093] Synthesis of 3,4-difluoro-6-methoxybenzophenone
[0094] In a 200ml four-necked flask, add 28.00ml of tetrachloroethane, 15.97g (0.111 mole) of 3,4-difluoroanisole, 0.50g (3.67×10 -3mol) and 20.00 g (0.142 mol) of benzoyl chloride were stirred, replaced with nitrogen, and heated at an internal temperature of 150° C. for 8 hours. Next, 200 ml of toluene and 100 ml of water were mixed in a 1 L beaker, and the reaction liquid was added thereto and stirred. 50 ml of water was added to the toluene layer, and the pH was adjusted to 10 with NaOH, followed by washing with 50 ml of water four times. The toluene layer was concentrated, and 20 ml of hexane was added to precipitate crystals. This was filtered and dried to obtain 3,4-difluoro-6-methoxybenzophenone (yield 9.00 g, yield 32.7%, HPLC purity 98.1%).
[0095] Synthesis of 3-fluoro-6-methoxy-4-phenylthiobenzophenone
[0096] Add 2.73 g (0...
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