反応 #168405

反応方程式

4-(5-chloropyridin-3-yl)-2-(hydroxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile

lithium hydroxide

iodoethane

→

racemic 4-(5-chloropyridin-3-yl)-2-(ethoxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile

溶媒

NMP

反応条件

後処理

1. 1
   その他The reaction mixture was quenched with sat. aqueous ammonium chloride
2. 2
   抽出extracted with ethyl acetate
3. 3
   乾燥The organic layer was dried over sodium sulfate
4. 4
   ろ過filtered
5. 5
   濃縮concentrated
6. 6
   その他The residue was purified by silica gel chromatography (hexanes/0-50% EtOAc)

実験手順

To a solution of 4-(5-chloropyridin-3-yl)-2-(hydroxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile (276 mg, 0.585 mmol) in NMP (3 mL) was added lithium hydroxide (28.0 mg, 1.170 mmol) and iodoethane (142 μL, 1.754 mmol), and the reaction mixture was allowed to stir at room temperature overnight. The reaction mixture was quenched with sat. aqueous ammonium chloride and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, filtered, and concentrated. The residue was purified by silica gel chromatography (hexanes/0-50% EtOAc) to afford racemic 4-(5-chloropyridin-3-yl)-2-(ethoxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile. The racemic material was then purified by chiral supercritical fluid chromatography (Chiralpak OJ-H, 21×250 mm, MeOH in CO2) to afford 4-(5-chloropyridin-3-yl)-2-((R)-ethoxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile and 4-(5-chloropyridin-3-yl)-2-(S)-ethoxy(phenyl)methyl)-3-((trans-4-methylcyclohexyl)methyl)-3H-imidazo[4,5-c]pyridine-6-carbonitrile. MS ESI calc'd. for C29H30ClN5O [M+H]+ 500. found 500. 1H NMR (600 MHz, CD3OD) δ 8.75 (d, J=2.3, 1H), 8.70 (d, J=1.6, 1H), 8.27 (s, 1H), 8.23 (t, J=2.0, 1H), 7.49 (d, J=7.2, 2H), 7.38 (t, J=7.3, 2H), 7.36-7.31 (m, 1H), 5.94 (s, 1H), 4.01-3.85 (m, 2H), 3.68-3.59 (m, 2H), 1.44-1.36 (m, 2H), 1.27 (t, J=7.0, 3H), 1.07-0.98 (m, 1H), 0.89-0.78 (m, 1H), 0.76-0.66 (m, 5H), 0.64-0.54 (m, 1H), 0.54-0.46 (m, 1H), 0.46-0.36 (m, 2H).

出典