반응 #2006481

반응 방정식

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

수율 75.7%

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

수율 75.7%

용매

diethyl ether

DMF

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후처리

1. 1
   기타at room temperature
2. 2
   세척washed successively with a 10% potassium phosphate and brine solution
3. 3
   건조finally dried with magnesium sulphate
4. 4
   기타The crude compound was purified by flash chromatography

실험 절차

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).

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