C(#N)C.[CH3:4][C:5]([C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:8]=1)=[O:6].OI(C1C=CC=CC=1)[O:19][S:20]([C:23]1[CH:29]=[CH:28][C:26]([CH3:27])=[CH:25][CH:24]=1)(=[O:22])=[O:21]>C(OCC)(=O)C>[S:20]([O:22][CH2:4][C:5]([C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:8]=1)=[O:6])([C:23]1[CH:29]=[CH:28][C:26]([CH3:27])=[CH:25][CH:24]=1)(=[O:21])=[O:19]Acetonitrile solution (40 mL) containing 2-acetonaphthone (1.70 g, 9.99 mmol) and [hydroxyl(tosyloxy)iodo]benzene (4.00 mg, 10.2 mmol) was heated under reflux for 3 hours. The reaction mixture was cooled, and ethyl acetate was added thereto. The reaction solution was washed with saturated aqueous sodium bicarbonate solution, dried over anhydrous magnesium sulfate, and concentrated in vacuo to remove the solvent to obtain the title compound (2.33 g, 68.5%).
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