tert-Butylsulfinamide, (R)-(+)- → (NE,R)-2-methyl-N-[1-(5-methylsulfonylfuran-2-yl)propylidene]propane-2-sulfinamide

HRID 559669노트

반응식

HRID 559669 반응식
[CH3:1][S:2]([C:5]1[O:9][C:8]([C:10](=O)[CH2:11][CH3:12])=[CH:7][CH:6]=1)(=[O:4])=[O:3].[CH3:14][C:15]([S@:18]([NH2:20])=[O:19])([CH3:17])[CH3:16]>C1COCC1.C(OCC)C.O.CC(C)[O-].[Ti+4].CC(C)[O-].CC(C)[O-].CC(C)[O-]>[CH3:1][S:2]([C:5]1[O:9][C:8](/[C:10](=[N:20]/[S@@:18]([C:15]([CH3:17])([CH3:16])[CH3:14])=[O:19])/[CH2:11][CH3:12])=[CH:7][CH:6]=1)(=[O:4])=[O:3]

참가 물질

7

반응물 2

HCID 10964479tert-Butylsulfinamide, (R)-(+)-HCID 592781411-(5-Methanesulfonyl-furan-2-yl)-propan-1-one

생성물 1

HCID 59278140(NE,R)-2-methyl-N-[1-(5-methylsulfonylfuran-2-yl)propylidene]propane-2-sulfinamide

시약·촉매·용매 4

HCID 11026Titanium isopropoxide촉매HCID 962Water용매HCID 3283Diethyl Ether용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 1-(5-methanesulfonyl-furan-2-yl)-propan-1-one (1.1 g, 5.5 mmol) in THF (30 mL) was added (R)-(+)-2-methyl-2-propanesulfinamide (0.750 g, 6.06 mmol) and titanium (IV) isopropoxide (6 mL, 25 mmol) and the mixture was warmed at reflux. After 18 hours, the mixture was cooled to room temperature, and diluted with diethyl ether (100 mL) and water (6 mL). The mixture was stirred for 10 minutes, dried over sodium sulfate, filtered and concentrated. The crude product was purified by silica gel chromatography, eluting with a gradient of 0-80% EtOAc-hexanes to afford (R)-2-methyl-propane-2-sulfinic acid[1-(5-methanesulfonyl-furan-2-yl)-prop-(E)-ylidene]-amide.

후처리

  1. temperaturethe mixture was warmed
  2. temperatureat reflux
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude product was purified by silica gel chromatography
  7. washeluting with a gradient of 0-80% EtOAc-hexanes

출처 및 근거

ORD 기록
ord-f4f9efc7bbd243f99fbee9928eb45a0a
출처 데이터셋
uspto-grants-2011_11
특허 번호
US08063065B2

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