Ethyl Acetate → HCID 178424523, Verbindung

HRID 1508033Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1508033
[C:1]([CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][C:9]([NH:12][C:13]([C:15]2[N:16](COCC[Si](C)(C)C)[CH:17]=[C:18]([C:20]#[N:21])[N:19]=2)=[O:14])=[C:8]([C:30]2[CH2:35][CH2:34][C:33]([CH3:37])([CH3:36])[CH2:32][CH:31]=2)[CH:7]=1)(=[O:3])[NH2:2].[F-].C([N+](CCCC)(CCCC)CCCC)CCC.CCOC(C)=O>C1COCC1>[C:1]([CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][C:9]([NH:12][C:13]([C:15]2[NH:16][CH:17]=[C:18]([C:20]#[N:21])[N:19]=2)=[O:14])=[C:8]([C:30]2[CH2:35][CH2:34][C:33]([CH3:37])([CH3:36])[CH2:32][CH:31]=2)[CH:7]=1)(=[O:3])[NH2:2]

Komponenten

5

Edukt 3

HCID 8857Ethyl AcetateHCID 2724141Tetrabutylammonium FluorideHCID 58994394HCID 58994394, Verbindung

Produkt 1

HCID 178424523HCID 178424523, VerbindungAusbeute 24 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A solution of 4-cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylic acid [4-(2-carbamoyl-ethyl)-2-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-amide (as prepared in the previous step, 160 mg, 0.307 mmol) and tetrabutylammonium fluoride (357 μL, 0.357 mmol, 1.0 M in THF) in 4.5 mL of THF was stirred at reflux for 1.5 h under Ar. After cooling to RT, the mixture was treated with EtOAc (40 mL), washed with saturated aq NaHCO3 (5 mL), brine (10 mL) and dried (Na2SO4). The organic layer was concentrated in vacuo and the residue was purified by flash chromatography on silica gel (5% MeOH/DCM) to give 29.2 mg (24%) of the title compound as a white solid. 1H-NMR (CD3OD; 400 MHz): δ 8.09 (d, 1H, J=8.3 Hz), 7.98 (s, 1H), 7.14 (dd, 1H, J=8.3, 2.1 Hz), 7.07 (d, 1H, J=2.1 Hz), 5.71 (m, 1H), 2.89 (t, 2H, J=7.7 Hz), 2.50 (t, 2H, J=7.7 Hz), 2.29 (m, 2H), 2.06 (m, 2H), 1.57 (t, 2H, J=6.3 Hz), 1.07 (s, 6H). Mass spectrum (ESI, m/z): Calcd. for C22H25N5O2, 392.2 (M+H). found 392.2.

Aufarbeitung

  1. temperatureat reflux for 1.5 h under Ar
  2. washwashed with saturated aq NaHCO3 (5 mL), brine (10 mL)
  3. dry with materialdried (Na2SO4)
  4. concentrationThe organic layer was concentrated in vacuo
  5. customthe residue was purified by flash chromatography on silica gel (5% MeOH/DCM)

Quellen und Nachweise

ORD-Eintrag
ord-3cfa3c84aaac46d6b6d7c8a07bb65228
Quelldatensatz
uspto-grants-2015_12
Patentnummer
US09221797B2

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