Trifluoromethanesulfonic anhydride → 5-Acetoxymethyl-1-[2-(1-adamantyl)ethyl]2-n-butylimidazole
Reaktionsgleichung
[C:1]12(CCO)[CH2:10][CH:5]3[CH2:6][CH:7]([CH2:9][CH:3]([CH2:4]3)[CH2:2]1)[CH2:8]2.C(N(C(C)C)CC)(C)C.S(OS(C(F)(F)F)(=O)=O)(C(F)(F)F)(=O)=O.[C:38]([N:41]1[C:45]([CH2:46][O:47][C:48](=[O:50])[CH3:49])=[CH:44][N:43]=[C:42]1[CH2:51][CH2:52][CH2:53][CH3:54])(=O)[CH3:39]>C(Cl)Cl.CO.C(Cl)(Cl)Cl>[C:48]([O:47][CH2:46][C:45]1[N:41]([CH2:38][CH2:39][C:1]23[CH2:10][CH:5]4[CH2:4][CH:3]([CH2:9][CH:7]([CH2:6]4)[CH2:8]2)[CH2:2]3)[C:42]([CH2:51][CH2:52][CH2:53][CH3:54])=[N:43][CH:44]=1)(=[O:50])[CH3:49]Komponenten
7
Edukt 4
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Reaktionsbedingungen
- Temperatur
- -78 °C
Versuchsvorschrift
A mixture of 2-(1-adamantyl)ethanol (10.7 g and diisopropylethylamine (11 ml) in methylene chloride (70 ml) was added to triflic anhydride (16.75 g) in methylene chloride (70 ml) at -78° C. under argon. After stirring the mixture at -78° C. for 45 minutes, 1-acetyl-2-n-butyl-5 -(acetoxymethyl)imidazole in methylene chloride (50 ml) was added and the mixture was allowed to stand at room temperature for 4 days, then concentrated and heated on a steam bath with 10% sodium hydroxide (250 ml), diluted with 300 ml of water, extracted with methylene chloride, dried, filtered and concentrated to give an oil. Chromatography (silica gel) in methanol-chloroform gives 5-acetoxymethyl-1-[2-(1-adamantyl)ethyl]-2-n-butylimidazole.
Aufarbeitung
- waitto stand at room temperature for 4 days
- concentrationconcentrated
- temperatureheated on a steam bath with 10% sodium hydroxide (250 ml)
- additiondiluted with 300 ml of water
- extractionextracted with methylene chloride
- customdried
- filtrationfiltered
- concentrationconcentrated
- customto give an oil
Quellen und Nachweise
- ORD-Eintrag
- ord-be502e9612ec40cd99aa349622be2ab8
- Quelldatensatz
- uspto-grants-1993_02
- Patentnummer
- US05185351
Notizen zur Reaktion
Wird geladen…