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

HRID 589627

반응식

HRID 589627 반응식
FC(F)(F)C1C=C(NC(N[C@@H](C2C3C(=CC=C(OC)C=3)N=CC=2)[C@@H]2CC3CCN2CC3)=O)C=C(C(F)(F)F)C=1.C=CC.[N+:43]([CH3:46])([O-:45])=[O:44].[C:47]([O:51][C:52](=[O:76])[C:53]1[CH:58]=[CH:57][C:56]([C:59](=[O:74])/[CH:60]=[C:61](\[C:66]2[CH:71]=[C:70]([Cl:72])[CH:69]=[C:68]([Cl:73])[CH:67]=2)/[C:62]([F:65])([F:64])[F:63])=[CH:55][C:54]=1[CH3:75])([CH3:50])([CH3:49])[CH3:48]>O>[C:47]([O:51][C:52](=[O:76])[C:53]1[CH:58]=[CH:57][C:56]([C:59](=[O:74])[CH2:60][C@@:61]([C:66]2[CH:71]=[C:70]([Cl:72])[CH:69]=[C:68]([Cl:73])[CH:67]=2)([CH2:46][N+:43]([O-:45])=[O:44])[C:62]([F:64])([F:63])[F:65])=[CH:55][C:54]=1[CH3:75])([CH3:50])([CH3:49])[CH3:48]

참가 물질

6

반응물 4

HCID 6375NitromethaneHCID 8252PropyleneHCID 866959924-[(E)-3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-but-2-enoyl]-2-methyl-benzoic acid tert-butyl esterHCID 866959931-[3,5-bis(trifluoromethyl)phenyl]-3-[(S)-(6-methoxy-4-quinolyl)-[(2S)-quinuclidin-2-yl]methyl]urea

생성물 1

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

시약·촉매·용매 1

HCID 962Water용매

반응 조건

온도
50 °C

실험 절차

Alternatively, to a solution of 1-[3,5-bis(trifluoromethyl)phenyl]-3-[(S)-(6-methoxy-4-quinolyl)-[(2S)-quinuclidin-2-yl]methyl]urea; prop-1-ene (09 mg, prepared according to the literature: Organic Letters 2007, 9, (14), 2621-2624) and nitromethane (0.6 ml) under argon, was added 4-[(E)-3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-but-2-enoyl]-2-methyl-benzoic acid tert-butyl ester (100 mg). The solution was heated for 3 days at 50° C. then allowed to stand at room temperature for 2 days. Water was then added and the resulting mixture was extracted with diethyl ether 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 (100 mg). Chiral HPLC analysis (Chiralpack IA, Heptane:2-propanol=90:10, 1 ml/min, retention time 6.43 minutes (major enantiomer), 7.78 minutes (minor enantiomer) indicated that the reaction proceeded with 95% enantioselectivity in favor of the R enantiomer.

후처리

  1. extractionthe resulting mixture was extracted with diethyl ether
  2. dry with materialthe combined organic fractions were dried over sodium sulfate
  3. customThe crude product was purified by flash chromatography (0% to 5% ethyl acetate in cyclohexane)

출처 및 근거

ORD 기록
ord-3ce2f1484aa54c8eab46976c92283e4b
출처 데이터셋
uspto-grants-2016_01
특허 번호
US09233920B2

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