Nitromethane → 4-[(R)-3-(3,5-dichloro-phenyl)-4,4,4-trifluoro-3-nitromethyl-butyryl]-2-methyl-benzoic acid tert-butyl ester

HRID 589625

반응식

HRID 589625 반응식
[C:1]([O:5][C:6](=[O:30])[C:7]1[CH:12]=[CH:11][C:10]([C:13](=[O:28])/[CH:14]=[C:15](\[C:20]2[CH:25]=[C:24]([Cl:26])[CH:23]=[C:22]([Cl:27])[CH:21]=2)/[C:16]([F:19])([F:18])[F:17])=[CH:9][C:8]=1[CH3:29])([CH3:4])([CH3:3])[CH3:2].FC(F)(F)C1C=C(NC(N[C@H]([C@@H]2C[C@@H]3CCN2C[C@@H]3CC)C2C3C(=CC=C(OC)C=3)N=CC=2)=S)C=C(C(F)(F)F)C=1.[Cl-].[NH4+].[N+:74]([CH3:77])([O-:76])=[O:75]>>[C:1]([O:5][C:6](=[O:30])[C:7]1[CH:12]=[CH:11][C:10]([C:13](=[O:28])[CH2:14][C@@:15]([C:20]2[CH:25]=[C:24]([Cl:26])[CH:23]=[C:22]([Cl:27])[CH:21]=2)([CH2:77][N+:74]([O-:76])=[O:75])[C:16]([F:17])([F:19])[F:18])=[CH:9][C:8]=1[CH3:29])([CH3:4])([CH3:3])[CH3:2]

참가 물질

5

반응물 4

HCID 6375NitromethaneHCID 25517Ammonium ChlorideHCID 111693261-[3,5-Bis(trifluoromethyl)phenyl)-3-{(S)[(2S,4S,5R)-5-ethyl-1-aza-bicyclo[2.2.2]oct-2-yl]-(6-methoxy-4-quinolinyl)methyl}thioureaHCID 866959924-[(E)-3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-but-2-enoyl]-2-methyl-benzoic acid tert-butyl ester

생성물 1

HCID 547615654-[(R)-3-(3,5-dichloro-phenyl)-4,4,4-trifluoro-3-nitromethyl-butyryl]-2-methyl-benzoic acid tert-butyl ester수율 77%

반응 조건

온도
50 °C

실험 절차

4-[(E)-3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-but-2-enoyl]-2-methyl-benzoic acid tert-butyl ester (0.0928 g, 0.198 mmol) and 1-[3,5-bis(trifluoromethyl)phenyl)-3-{(S)[(2S,4S,5R)-5-ethyl-1-aza-bicyclo[2.2.2]oct-2-yl]-(6-methoxy-4-quinolinyl)methyl}thiourea (0.0121 g, 0.020 mmol) were dissolved in nitromethane (0.6 ml) and the resulting solution was stirred at 50° C. for 2.5 days. The reaction mixture was cooled to room temperature and aqueous saturated ammonium chloride was added. The resulting mixture was extracted with dichloromethane (3×) and the combined organic fractions were dried over sodium sulfate. The crude product was purified by flash chromatography (0% to 5% ethyl acetate in cyclohexane) to afford 4-[(R)-3-(3,5-dichloro-phenyl)-4,4,4-trifluoro-3-nitromethyl-butyryl]-2-methyl-benzoic acid tert-butyl ester (0.080 g, 77%) as a beige solid. Chiral HPLC analysis (Chiralpack AS-RH, MeCN:MeOH:H2O=75:5:20, 1 ml/min, retention time 3.26 minutes (major enantiomer), 2.86 minutes (minor enantiomer) indicated that the reaction proceeded with 97.4% enantioselectivity.

후처리

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionThe resulting mixture was extracted with dichloromethane (3×)
  3. dry with materialthe combined organic fractions were dried over sodium sulfate
  4. customThe crude product was purified by flash chromatography (0% to 5% ethyl acetate in cyclohexane)

출처 및 근거

ORD 기록
ord-d59ab02fcd5b4d5396e6a049994c18ea
출처 데이터셋
uspto-grants-2016_01
특허 번호
US09233920B2

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