Sulfuric Acid → HCID 58134741, Verbindung

HRID 444768Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 444768
OS(O)(=O)=O.O[C:7]1([CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13])[CH2:10][CH2:9][CH2:8]1.[C:17](#[N:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.[OH-:25].[Na+]>>[C:17]([NH:24][C:7]1([CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13])[CH2:10][CH2:9][CH2:8]1)(=[O:25])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Komponenten

5

Edukt 4

HCID 1118Sulfuric AcidHCID 7505BenzonitrileHCID 14798Sodium HydroxideHCID 58134840ETHYL 2-(1-HYDROXYCYCLOBUTYL)ACETATE

Produkt 1

HCID 58134741HCID 58134741, VerbindungAusbeute 51 %

Versuchsvorschrift

H2SO4 (2.20 mL, 41.3 mmol) was slowly added to a mixture of ethyl 1-hydroxycyclobutylacetate (6.45 g, 40.8 mmol) and benzonitrile (40 mL, 0.392 mol) at room temperature. The mixture was stirred for 1 hour at room temperature, then for an additional hour at 80° C. The mixture was cooled in an ice-water bath, and 2N NaOH solution was added until the mixture reached pH=7. The mixture was extracted with ethyl acetate and the combined organic extracts were dried over anhydrous Na2SO4, filtered and concentrated in vacuo. Flash chromatography (AcOEt:Hexane=5:1) of the residue gave the title compound as a colorless solid (5.40 g, 51%). 1H-NMR (400 MHz, CDCl3) δ 1.22 (3H, t, J=7.3 Hz), 1.84-2.07 (2H, m), 2.22-2.32 (2H, m), 2.44-2.55 (2H, m), 3.05 (2H, s), 4.11 (2H, q, J=7.3 Hz), 6.73 (1H, s), 7.39-7.52 (3H, m), 7.72-7.79 (2H, m).

Aufarbeitung

  1. waitfor an additional hour at 80° C
  2. temperatureThe mixture was cooled in an ice-water bath
  3. extractionThe mixture was extracted with ethyl acetate
  4. dry with materialthe combined organic extracts were dried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-1affb37d32774d6a9c23eda3eea6804c
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08476261B2

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