Br[CH2:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([CH3:11])=[C:7]([CH3:12])[CH:6]=1)=[O:4].[CH3:13][CH:14](C)[CH2:15]N(C=CC)CC(C)C.[OH:25][CH2:26][C:27]([CH3:31])([CH2:29][OH:30])[CH3:28].S(=O)(=O)(O)O.C1(C)C=CC(S(O)(=O)=O)=CC=1>O.C(#N)C>[CH3:28][C:27]1([CH3:31])[CH2:29][O:30][CH:13]([CH:14]([CH3:15])[CH2:2][C:3]([C:5]2[CH:10]=[CH:9][C:8]([CH3:11])=[C:7]([CH3:12])[CH:6]=2)=[O:4])[O:25][CH2:26]12-Bromo-1-(3,4-dimethylphenyl)ethan-1-one (6.2 g) and N,N-bis(2-methylpropyl)-1-propenylamine (6.8 g) were added to 25 ml of acetonitrile under an atmosphere of nitrogen and the mixture was stirred at around 50° C. for 4 hours. After cooling the reaction mixture to 10° C., 25 ml of water, 4.3 g of neopentyl glycol, 6.2 g of concentrated sulfuric acid and 0.62 g of para-toluenesulfonic acid were added to the reaction mixture and the mixture was stirred at around 60° C. for 1 hour. After cooling the reaction mixture to the room temperature, crystals precipitated. These crystals were isolated by filtration to give 6.6 g (yield 84%) of the title compound as white crystals.
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