N-(6-Chloro-4-o-tolyl-pyridin-3-yl)-N-methyl-3,5-bis-trifluoromethyl-benzamide → N-(6-Ethyl-4-o-tolyl-pyridin-3-yl)-N-methyl-3,5-bis-trifluoromethyl-benzamide
反応式
Cl[C:2]1[N:7]=[CH:6][C:5]([N:8]([CH3:25])[C:9](=[O:24])[C:10]2[CH:15]=[C:14]([C:16]([F:19])([F:18])[F:17])[CH:13]=[C:12]([C:20]([F:23])([F:22])[F:21])[CH:11]=2)=[C:4]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[CH3:32])[CH:3]=1.[CH2:33]([Zn]CC)[CH3:34]>C1COCC1>[CH2:33]([C:2]1[N:7]=[CH:6][C:5]([N:8]([CH3:25])[C:9](=[O:24])[C:10]2[CH:11]=[C:12]([C:20]([F:23])([F:22])[F:21])[CH:13]=[C:14]([C:16]([F:19])([F:18])[F:17])[CH:15]=2)=[C:4]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[CH3:32])[CH:3]=1)[CH3:34]参加物
4
実験手順
To a solution of N-(6-chloro-4-o-tolylpyridin-3-yl)-N-methyl-3,5-bis(trifluoromethyl)-benzamide (0.1 g, 212 μmol, example 12) in THF (1 mL) were added tetrakis(triphenyl-phosphine)palladium(0) (12.2 mg, 10.6 μmol) and diethylzinc (1M solution in n-hexane, 137 μL, 137 μmol) and the brown solution was stirred at reflux for 16 hours. The solvent was evaporated and the brown gum was diluted with 1M aqueous HCl and EtOAc and the layers were separated. The aqueous layer was extracted twice with EtOAc. The organic layers were washed with brine, dried over MgSO4, filtered, treated with silica gel and evaporated. The compound was purified by silica gel chromatography on a 10 g column using an MPLC system eluting with a gradient of n-heptane:EtOAc (100:0 to 30:70). Light yellow solid (0.051 g; 51%). MS (ESI): m/z=467.16 [M+H]+.