Imidazole → HCID 178455374, Verbindung

HRID 78518

Reaktionsgleichung

Reaktionsgleichung von HRID 78518
[CH2:1]([O:8][CH2:9][C@@H:10]1[CH2:13][C@H:12]([OH:14])[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CN=C1.[Si:20](Cl)([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21]>C(Cl)Cl>[CH2:1]([O:8][CH2:9][C@@H:10]1[CH2:13][C@H:12]([O:14][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 178521634HCID 178521634, Verbindung

Produkt 1

HCID 178455374HCID 178455374, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of cis-3-benzyloxymethylcyclobutanol (Albany Molecular Research Institute, 1.0 g, 5.2 mmol) in 50 mL of CH2Cl2 was added imidazole (2.7 g, 39 mmol) followed by tert-butyldimethylsilyl chloride (3.9 g, 26 mmol). This mixture stirred at ambient temperature for 2 hours and was quenched with 10 mL of saturated aqueous NH4Cl. The layers were separated and the aqueous layer was extracted with three 5 mL of portions of CH2Cl2. The combined organic extracts were dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. Purification via column chromatography (SiO2, 75% hexanes in ethyl acetate) afforded the title compound. MS (DCI/NH3) m/z 307 (M+H)+.

Aufarbeitung

  1. customwas quenched with 10 mL of saturated aqueous NH4Cl
  2. customThe layers were separated
  3. extractionthe aqueous layer was extracted with three 5 mL of portions of CH2Cl2
  4. dry with materialThe combined organic extracts were dried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customPurification via column chromatography (SiO2, 75% hexanes in ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-404302aeb95a458e88bee592e88919ef
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08841334B2

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