반응 #1563942
ord-93667915d9cd40f1a1b339dcf95fed1b
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후처리
- 1기타Reaction mixture
- 2기타was quenched with cold water
- 3추출extracted with ethyl acetate (3×50 mL)
- 4건조dried over anhydrous sodium sulphate
- 5농축concentrated under reduced pressure
- 6기타to afford the crude, which
- 7기타was purified by flash chromatography (Biotage, Column: silica gel 12 g pack size, solid load, Mobile Phase: EtOAc in n-Hexane: 0 to 5% as eluent)
실험 절차
A solution of tert-butyl(cyclopropylmethyl)carbamate (4 g, 23.4 mmol) in DMF (35 mL) was added to a suspension of NaH (60% suspension in mineral oil) (0.58 g, 25.7 mmol) in DMF (5 mL) at 0-5° C., to it was added Iodomethane (2.5 mL, 40 mmol) and stirring was continued at 25° C. for 16 h. Reaction mixture was quenched with cold water, extracted with ethyl acetate (3×50 mL), dried over anhydrous sodium sulphate and concentrated under reduced pressure to afford the crude, which was purified by flash chromatography (Biotage, Column: silica gel 12 g pack size, solid load, Mobile Phase: EtOAc in n-Hexane: 0 to 5% as eluent) to afford tert-butyl(cyclopropylmethyl)(methyl)carbamate (Int-37) as pale yellow oil. 1H NMR (300 MHz, DMSO-d6) δ ppm 3.0-2.9 (2H, d), 2.85 (3H, s), 1.4 (9H, s), 0.9-0.7 (1H, bs), 0.5-0.3 (2H, m), 0.2-0.05 (2H, m).