HCID 23635904, Verbindung → Benzyl 3a,4-dihydro-3H-pyrrolo[3,4-c]isoxazole-5(6H)-carboxylate

HRID 470211Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 470211
[CH2:1]([N:4]([CH2:15]/[CH:16]=[N:17]/[OH:18])[C:5](=[O:14])[O:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH:2]=[CH2:3].Cl[O-].[Na+]>ClCCl>[N:17]1[O:18][CH2:3][CH:2]2[CH2:1][N:4]([C:5]([O:6][CH2:7][C:8]3[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=3)=[O:14])[CH2:15][C:16]=12

Komponenten

4

Edukt 2

HCID 23635904HCID 23635904, VerbindungHCID 23665760Sodium Hypochlorite

Produkt 1

HCID 86697896Benzyl 3a,4-dihydro-3H-pyrrolo[3,4-c]isoxazole-5(6H)-carboxylateAusbeute 75,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A solution of benzyl N-allyl-N-[(2E)-2-hydroxyiminoethyl]carbamate (24 g, 96.6 mmol) in dichloromethane (338 mL) is treated drop wise over 10 minutes with a 5% w/w aqueous solution of sodium hypochlorite (106.08 mmol, 143.06 mL). The resultant mixture is stirred at room temperature overnight. The reaction is quenched with a 40% aqueous solution of sodium bisulfite (7 g). The organic layer is separated, dried over magnesium sulfate, and concentrated under vacuum. The crude product is purified over silica gel eluting with 5% ethyl acetate in hexanes to give the title compound (18 g, 75%). ES/MS (m/e): 247 (M+H).

Aufarbeitung

  1. customThe reaction is quenched with a 40% aqueous solution of sodium bisulfite (7 g)
  2. customThe organic layer is separated
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated under vacuum
  5. customThe crude product is purified over silica gel eluting with 5% ethyl acetate in hexanes

Quellen und Nachweise

ORD-Eintrag
ord-2fa4fe1c60d140f6bfb2ac448c0bf1eb
Quelldatensatz
uspto-grants-2014_01
Patentnummer
US08629270B2

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