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

反応式

HRID 20370 の反応式
[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]

参加物

6

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒2 回HCID 8857Ethyl Acetate溶媒

反応条件

温度
0 °C

実験手順

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%).

後処理

  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)

出典と根拠

ORDレコード
ord-d78273dba6dc49e19ac8e515be59185f
出典データセット
uspto-grants-2010_06
特許番号
US07745438B2

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