Isopropanol → Ethyl 2-[2-[tert-butoxycarbonyl-[(4-methoxyphenyl)methyl]amino]thiazol-4-yl]-2-isopropoxy-acetate

HRID 524411Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 524411
[C:1]([O:5][C:6]([N:8]([CH2:22][C:23]1[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=1)[C:9]1[S:10][CH:11]=[C:12]([C:14](=[N+]=[N-])[C:15]([O:17][CH2:18][CH3:19])=[O:16])[N:13]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:31]([OH:34])([CH3:33])[CH3:32]>C(Cl)Cl.CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.[Rh].[Rh]>[C:1]([O:5][C:6]([N:8]([CH2:22][C:23]1[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=1)[C:9]1[S:10][CH:11]=[C:12]([CH:14]([O:34][CH:31]([CH3:33])[CH3:32])[C:15]([O:17][CH2:18][CH3:19])=[O:16])[N:13]=1)=[O:7])([CH3:3])([CH3:2])[CH3:4]

Komponenten

5

Edukt 2

HCID 3776IsopropanolHCID 86669544Ethyl 2-[2-[tert-butoxycarbonyl-[(4-methoxyphenyl)methyl]amino]thiazol-4-yl]-2-diazo-acetate

Produkt 1

HCID 68182441Ethyl 2-[2-[tert-butoxycarbonyl-[(4-methoxyphenyl)methyl]amino]thiazol-4-yl]-2-isopropoxy-acetateAusbeute 85,8 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 423677Acetic acid, rhodium salt (4:2)KatalysatorHCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Ethyl 2-[2-[tert-butoxycarbonyl-[(4-methoxyphenyl)methyl]amino]thiazol-4-yl]-2-diazo-acetate (0.6 g, 1.38 mmol) was dissolved in DCM (10 mL) under argon atmosphere. To this solution, iso-propanol (0.12 mL, 1.66 mmol) was added followed by rhodium (II) acetate dimer (12 mg, 0.028 mmol). Mixture was stirred at room temperature for 30 min. then diluted with DCM (10 mL). Organic layer was washed with water, brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure to give a crude product which was purified by silica gel column chromatography using 20% ethyl acetate in hexane to provide ethyl 2-[2-[tert-butoxycarbonyl-[(4-methoxyphenyl)methyl]amino]thiazol-4-yl]-2-isopropoxy-acetate (0.55 g).

Aufarbeitung

  1. washOrganic layer was washed with water, brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customto give a crude product which
  5. customwas purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-53e03ceedca14f0591086f255a1d91fa
Quelldatensatz
uspto-grants-2016_05
Patentnummer
US09340506B2

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