cis-3-Benzyloxycyclohexan-1-ol → 3-(Benzyloxy)cyclohexanol

HRID 10379Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 10379
[CH2:1]([O:8][C@@H:9]1[CH2:14][CH2:13][CH2:12][C@H:11]([OH:15])[CH2:10]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(OC=C)(=O)C.C(Cl)Cl>[CH2:1]([O:8][CH:9]1[CH2:14][CH2:13][CH2:12][CH:11]([OH:15])[CH2:10]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

4

Edukt 1

HCID 10899774cis-3-Benzyloxycyclohexan-1-ol

Produkt 1

HCID 141727893-(Benzyloxy)cyclohexanol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittelHCID 7904Vinyl AcetateLösungsmittel

Versuchsvorschrift

100.0 g of cis-3-benzyloxycyclohexan-1-ol were dissolved in 170 ml of vinyl acetate and 630 ml of methylene chloride, admixed with 5.0 g of Novozym 435 and stirred at 20–23° C. for 26 h. The enzyme was filtered off, and a sample was withdrawn and concentrated by evaporation under reduced pressure. The enantiomeric excess of (1S,3R)-3-benzyloxycyclohexan-1-ol was >99% (HPLC on Chiralpak AD-H 250×4.6; 1 ml/min, 25:1:0.5 heptane/EtOH/CH3CN+0.1% TFA), and the enantiomeric excess of the (1R,3S)-acetate was 90% (HPLC on Chiralcel OD 250×4.6; 1 ml/min, 100:1:0.5 heptane/EtOH/CH3CN).

Aufarbeitung

  1. filtrationThe enzyme was filtered off
  2. customa sample was withdrawn
  3. concentrationconcentrated by evaporation under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-3b59f332d78f46dc86667879760bad0b
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07094795B2

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