Diisopropyl Ether → 5-(p-Tolyl)thianthrenium nonafluorobutanesulfonate

참여 물질

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In 10 ml of toluene was dissolved 2 g of thianthrene-S-oxide and the solution was cooled with ice. Then, 2.8 ml of trifluoroacetic anhydride and 1.2 ml of nonafluorobutanesulfonic acid were added thereto, followed by stirring for one hour. Diisopropyl ether was added thereto and the supernatant solution was removed. The residue was purified by a silica gel column (chloroform/methanol=19/1) to obtain 4.4 g of 5-(p-tolyl)thianthrenium nonafluorobutanesulfonate. 1H-NMR (400 MHz, CDCl3): σ 2.34 (s, 3H), 7.08 (d, 2H), 7.22 (d, 2H), 7.78 (m, 6H), 8.65 (d, 2H).

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