p-Toluenesulfonic acid → Ethyl (2,4,5-trifluoro-3-methyl-6-nitrobenzoyl)acetate
反応式
[F:1][C:2]1[C:20]([CH3:21])=[C:19]([F:22])[C:18]([F:23])=[C:17]([N+:24]([O-:26])=[O:25])[C:3]=1[C:4]([CH:6](C(OCC)=O)[C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5].C1(C)C=CC(S(O)(=O)=O)=CC=1>O>[F:1][C:2]1[C:20]([CH3:21])=[C:19]([F:22])[C:18]([F:23])=[C:17]([N+:24]([O-:26])=[O:25])[C:3]=1[C:4]([CH2:6][C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5]参加物
4
実験手順
A mixture of 45.3 g of diethyl (2,4,5-trifluoro-3-methyl-6-nitrobenzoyl)malonate, 30 mg of p-toluenesulfonic acid, and 120 ml of water was heated under reflux for 50 minutes. After cooling, the reaction mixture was extracted with diethyl ether, and the extract was washed with brine, and then dried and concentrated to give 34.2 g of brown oil.