反応 #2006481

反応方程式

sodium iodide

compound 11a

4-(4,4-Dimethyl-2,5-dioxo-1-imidazolidinyl)-2-trifluoromethyl-benzonitrile

sodium hydride

2-(3-chloropropoxy)-tetrahydro-2H-pyran

→

compound 12a

収率 75.7%

4-{4,4-Dimethyl-2,5-dioxo-3-[3-(tetrahydro-furan-2-yloxy)-propyl]-imidazolidin-1-yl}-2-trifluoromethyl-benzonitrile

収率 75.7%

溶媒

diethyl ether

DMF

反応条件

後処理

1. 1
   その他at room temperature
2. 2
   洗浄washed successively with a 10% potassium phosphate and brine solution
3. 3
   乾燥finally dried with magnesium sulphate
4. 4
   その他The crude compound was purified by flash chromatography

実験手順

To a solution of compound 11a (950 mg, 3.20 mmol) in anhydrous DMF (10 mL) under argon at room temperature was carefully added sodium hydride (60% suspension in oil) (140 mg, 3.50 mmol). The solution was stirred for 30 min and 2-(3-chloropropoxy)-tetrahydro-2H-pyran (656 mg, 3.66 mmol) was dropwise added. Finally, sodium iodide (480 mg, 3.20 mmol) was added and the solution was heated at 50° C. for 36 hrs. The resulting solution was diluted with diethyl ether (75 mL), washed successively with a 10% potassium phosphate and brine solution, and finally dried with magnesium sulphate. The crude compound was purified by flash chromatography using EtOAc/Hexane (3:7) as an eluant to give pure compound 12a (1.03 g, 73%). 1H NMR (300 MHz, Acetone-d6) δ: 1.51 (m, 4H), 1.57 (s, 6H), 1.6-1.9 (m, 2H), 2.04 (m, 2H), 3.50 (m, 4H), 3.80 (m, 2H), 4.59 (t, 1H, J=3.42 Hz), 8.18 (m, 2H), 8.27 (s, 1H).

出典