Allyl chloroformate → (R)-2-(allyloxycarbonylamino)-3-benzyloxy-1-propanol

HRID 381175Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 381175
[NH2:1][C@@H:2]([CH2:5][O:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH2:3][OH:4].Cl[C:15]([O:17][CH2:18][CH:19]=[CH2:20])=[O:16].C([O-])(O)=O.[Na+]>C(Cl)Cl>[CH2:18]([O:17][C:15]([NH:1][C@@H:2]([CH2:5][O:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH2:3][OH:4])=[O:16])[CH:19]=[CH2:20]

Komponenten

5

Versuchsvorschrift

A solution of (R)-2-amino-3-benzyloxy-1-propanol (5 g, 27.6 mmol) in CH2Cl2 (250 mL) was treated with allyl chloroformate (3.2 mL, 30 mmol) and saturated aqueous NaHCO3 (250 mL) for 18 h. The organic layer was separated and concentrated in vacuo. Purification by chromatography eluting with 30% EtOAc/hexanes afforded 6.9 g (94%) of (R)-2-(allyloxycarbonylamino)-3-benzyloxy-1-propanol as an amorphous solid: 1H NMR (CDCl3) δ 2.56 (br s, 1H), 3.69 (m, 3H), 3 88 (m, 2H), 4.54 (s, 2H), 4.58 (d, 2H, J=5.6 Hz), 5.23 (dd, 1H, J=10.4, 1.1 Hz), 5.33 (dd, 1H, J=17.1, 1.1 Hz), 5.42 (m, 1H), 5.93 (m, 1H), 7.35 (m, 5H).

Aufarbeitung

  1. customThe organic layer was separated
  2. concentrationconcentrated in vacuo
  3. customPurification by chromatography
  4. washeluting with 30% EtOAc/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-52fad1f1cd724f1bb1322706dbc1fb85
Quelldatensatz
uspto-grants-2001_10
Patentnummer
US06303347B1

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