Carbon tetrabromide → 5-Bromo-2-(2-thienylmethoxy)benzyl bromide
Reaktionsgleichung
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([O:10][CH2:11][C:12]2[S:13][CH:14]=[CH:15][CH:16]=2)=[C:6]([CH:9]=1)[CH2:7]O.C(Br)(Br)(Br)[Br:18].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>ClCCl>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([O:10][CH2:11][C:12]2[S:13][CH:14]=[CH:15][CH:16]=2)=[C:6]([CH:9]=1)[CH2:7][Br:18]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 5-bromo-2-(2-thienylmethoxy)benzyl alcohol (0.53 g, 1.77 mmoles) in dichloromethane (12 ml) was cooled in an ice bath and treated with carbon tetrabromide (0.73 g, 2.2 mmol) polymer bound triphenylphosphine (0.65 g, 1.95 mmol) and stirred at ambient temperature for 42 hours. The reaction was filtered and evaporated. Chromatography (eluant: ethyl acetate/hexane) gave 5-bromo-2-(2-thienylmethoxy)benzyl bromide as a white solid (0.29, 45%).
Aufarbeitung
- filtrationThe reaction was filtered
- customevaporated
Quellen und Nachweise
- ORD-Eintrag
- ord-994f6e71f46847b498bd0647c996af81
- Quelldatensatz
- uspto-grants-1998_12
- Patentnummer
- US05843942
Notizen zur Reaktion
Wird geladen…