Acetic Acid → (1S,3R)-3-(3-pyridyl)cyclopentyl acetate

HRID 655163

Reaktionsgleichung

Reaktionsgleichung von HRID 655163
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C@@H:7]2[CH2:11][CH2:10][C@@H:9]([OH:12])[CH2:8]2)[CH:2]=1.[C:13](O)(=[O:15])[CH3:14].CC(OC(/N=N/C(OC(C)C)=O)=O)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.CCOC(C)=O>[C:13]([O:12][C@H:9]1[CH2:10][CH2:11][C@@H:7]([C:3]2[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=2)[CH2:8]1)(=[O:15])[CH3:14]

Komponenten

7

Edukt 4

HCID 176Acetic AcidHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 59486143(1R,3R)-3-(3-pyridyl)cyclopentanol

Produkt 1

HCID 59486131(1S,3R)-3-(3-pyridyl)cyclopentyl acetateAusbeute 100,4 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A solution of (1R,3R)-3-(3-pyridyl)cyclopentanol (3.47 g, 21.3 mmol) in THF (100 mL) was cooled to 4° C. and treated with acetic acid (1.34 mL, 23.4 mmol), Diisopropylazodicarboxylate (4.61 mL, 23.4 mmol) and triphenylphosphine (6.14 g, 23.4 mmol). The reaction mixture was stirred at room temperature for 12 h. The reaction mixture was diluted with EtOAc, and washed with H2O and brine. The organic layers was dried over Na2SO4. After concentration under reduced pressure, the residue was purified by column chromatography (NH, Hexane/EtOAc=6/1) to yield (1S,3R)-3-(3-pyridyl)cyclopentyl acetate (4.39 g, 100%) as colorless oil.

Aufarbeitung

  1. washwashed with H2O and brine
  2. dry with materialThe organic layers was dried over Na2SO4
  3. concentrationAfter concentration under reduced pressure
  4. customthe residue was purified by column chromatography (NH, Hexane/EtOAc=6/1)

Quellen und Nachweise

ORD-Eintrag
ord-af09548d6c284a588d17147126956e50
Quelldatensatz
uspto-grants-2011_12
Patentnummer
US08071591B2

Verknüpfte Notizen

Wird geladen…