Br[CH2:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([O:11][CH2:12][CH3:13])=[CH:7][CH:6]=1)=[O:4].[CH3:14][CH:15](C)[CH2:16]N(C=CC)CC(C)C.CC(N(C)C)=O.[OH:32][CH2:33][C:34]([CH3:38])([CH2:36][OH:37])[CH3:35]>O>[CH3:35][C:34]1([CH3:38])[CH2:36][O:37][CH:14]([CH:15]([CH3:16])[CH2:2][C:3]([C:5]2[CH:10]=[CH:9][C:8]([O:11][CH2:12][CH3:13])=[CH:7][CH:6]=2)=[O:4])[O:32][CH2:33]12-Bromo-1-(4-ethoxyphenyl)ethan-1-one (4.0 g) and N,N-bis(2-methylpropyl)-1-propenylamine (4.0 g) were added to 16 ml of dimethylacetamide under an atmosphere of nitrogen and the mixture was stirred between 50° C. and 55° C. for 2 hours. To the reaction mixture were added successively 1.6 g of paratoluenesulfonic acid and 2.1 g of neopentyl glycol and the mixture was stirred between 50° C. and 60° C. for 3 hours. After addition of 8 ml of water to the reaction mixture and cooling the reaction mixture to the room temperature, crystals precipitated. These crystals were isolated by filtration to give 3.7 g (yield 74%) of the title compound as white crystals. The 1H-NMR spectrum of the product is substantially identical with that of the product of Example 1.
読み込み中…
