Diisopropylamine → 1-[(2-Methoxy-3-pyridyl)methyl]-4-piperidineacetaldehyde
反応式
Cl[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][N:3]=1.[CH2:8]1[CH2:13][CH2:12][CH2:11][CH2:10]C1.C1([Li])C=CC=CC=1.C([O:23][CH2:24]C)C.[CH:26]([NH:29][CH:30](C)C)(C)[CH3:27].[O:33]1CCCC1>>[CH3:24][O:23][C:2]1[C:7]([CH2:30][N:29]2[CH2:8][CH2:13][CH:12]([CH2:11][CH:10]=[O:33])[CH2:27][CH2:26]2)=[CH:6][CH:5]=[CH:4][N:3]=1参加物
反応条件
- 温度
- -45 °C
実験手順
0.26 ml of 2-chloropyridine, 2.9 ml of a 0.97M phenyllithium cyclohexane/diethyl ether and 0.039 ml of diisopropylamine were dissolved in 9 ml of tetrahydrofuran, and the mixture was stirred at −45° C. for 1 hour. A mixed solution of 500 mg of 1-[(2-methoxy-3-pyridyl)methyl]-4-piperidineacetaldehyde obtained in Reference Example 22 and 2 ml of tetrahydrofuran was added dropwise thereinto, and the mixture was further stirred at −45° C. for 20 minutes. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, and then dried over anhydrous magnesium sulfate. The solvent was evaporated, and the crude product was purified by NH form silica gel column chromatography (ethyl acetate:hexane=1:2), to give 420 mg of the title compound as a yellow oil.
出典と根拠
- ORDレコード
- ord-c023b08056fb48a9a019fd8c3b6aa65d
- 出典データセット
- uspto-grants-2004_08
- 特許番号
- US06784192B2
反応ノート
読み込み中…