1-Nitro-2-phenylethane → 2(S)-(2-Cyclohexylethyl)-5-(R)-(1-(R)-hydroxy-2-(S)-nitro-3-phenylpropyl)-morpholine-4-carboxylic acid tert-butyl ester

HRID 20370

반응식

HRID 20370 반응식
[C:1]1([CH2:7][CH2:8][N+:9]([O-:11])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:12]([O:16][C:17]([N:19]1[C@@H:24]([CH:25]=[O:26])[CH2:23][O:22][C@@H:21]([CH2:27][CH2:28][CH:29]2[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]2)[CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13].[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1.C(OCC)(=O)C>[C:12]([O:16][C:17]([N:19]1[C@@H:24]([C@@H:25]([OH:26])[C@@H:8]([N+:9]([O-:11])=[O:10])[CH2:7][C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[CH2:23][O:22][C@@H:21]([CH2:27][CH2:28][CH:29]2[CH2:30][CH2:31][CH2:32][CH2:33][CH2:34]2)[CH2:20]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]

참가 물질

6

반응물 3

HCID 802081-Nitro-2-phenylethaneHCID 2724141Tetrabutylammonium FluorideHCID 866153612-(S)-(2-Cyclohexylethyl)-5-(R)-formylmorpholine-4-carboxylic acid tert-butyl ester

생성물 1

HCID 685582042(S)-(2-Cyclohexylethyl)-5-(R)-(1-(R)-hydroxy-2-(S)-nitro-3-phenylpropyl)-morpholine-4-carboxylic acid tert-butyl ester수율 63.8%

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매2회HCID 8857Ethyl Acetate용매

반응 조건

온도
0 °C

실험 절차

Add 1-phenyl-2-nitroethane (91 mg, 0.61 mmol) to a solution of 2-(S)-(2-cyclohexylethyl)-5-(R)-formylmorpholine-4-carboxylic acid tert-butyl ester (164 mg, 0.50 mmol) in dry tetrahydrofuran (6 mL). Cool to 0° C. and add tetrabutylammonium fluoride (0.25 mL of a 1 M solution in tetrahydrofuran, 0.25 mmol) and refrigerate the solution overnight. Dilute with ethyl acetate, wash with cold saturated aqueous sodium chloride (50 mL), dry (sodium sulfate), filter, concentrate and purify (silica gel chromatography, eluting with 2.5:97.5 ethyl acetate:dichloromethane) to give the desired compound as a white foam (152 mg, 63%).

후처리

  1. customthe solution overnight
  2. washwash with cold saturated aqueous sodium chloride (50 mL)
  3. dry with materialdry (sodium sulfate)
  4. filtrationfilter
  5. concentrationconcentrate
  6. custompurify
  7. wash(silica gel chromatography, eluting with 2.5:97.5 ethyl acetate:dichloromethane)

출처 및 근거

ORD 기록
ord-d78273dba6dc49e19ac8e515be59185f
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07745438B2

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