Pyridine → HCID 86701040, Verbindung

HRID 1427604Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1427604
[CH2:1]([O:8][N:9]1[C:15](=[O:16])[N:14]2[CH2:17][C@H:10]1[CH2:11][CH2:12][C@H:13]2[C:18]([NH:20][NH:21][C:22](=O)[CH2:23][CH:24]1[CH2:27][CH:26]([NH:28][C:29](=[O:35])[O:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:25]1)=[O:19])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CC=CC=1.O(S(C(F)(F)F)(=O)=O)S(C(F)(F)F)(=O)=O.C([O-])(O)=O.[Na+]>C(Cl)Cl>[CH2:1]([O:8][N:9]1[C:15](=[O:16])[N:14]2[CH2:17][C@H:10]1[CH2:11][CH2:12][C@H:13]2[C:18]1[O:19][C:22]([CH2:23][CH:24]2[CH2:25][CH:26]([NH:28][C:29](=[O:35])[O:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:27]2)=[N:21][N:20]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

6

Edukt 4

HCID 1049PyridineHCID 67749Trifluoromethanesulfonic anhydrideHCID 516892Sodium BicarbonateHCID 86701041HCID 86701041, Verbindung

Produkt 1

HCID 86701040HCID 86701040, VerbindungAusbeute 72,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of tert-butyl 3-(2-(2-((2S,5R)-6-(benzyloxy)-7-oxo-1,6-diaza-bicyclo[3.2.1]octane-2-carbonyl)hydrazinyl)-2-oxoethyl)cyclobutylcarbamate (1.0 g, 1.99 mmol) in DCM (20 mL) was added pyridine (1.5 mL). (CF3SO2)2O (1.4 g, 4.97 mmol) was added slowly at −10° C. The reaction mixture was stirred at 0° C. for 1 h. Sat. NaHCO3 was added at 0° C. very slowly. The organic layer was separated and the water layer was exacted with EtOAc (3×). The combined organic layer was dried over Na2SO4 and concentrated. The residue was purified by silica gel column chromatography (gradient elution 10˜50% EtOAc/petroleum ether) to afford tert-butyl 3-((5-((2S,5R)-6-(benzyloxy)-7-oxo-1,6-diaza-bicyclo[3.2.1]octan-2-yl)-1,3,4-oxadiazol-2-yl)methyl)cyclobutylcarbamate (0.7 g, 48%) as a slight yellow solid. ESI-MS (EI+, m/z): 484.0 [M+H]+.

Aufarbeitung

  1. customThe organic layer was separated
  2. dry with materialThe combined organic layer was dried over Na2SO4
  3. concentrationconcentrated
  4. customThe residue was purified by silica gel column chromatography (gradient elution 10˜50% EtOAc/petroleum ether)

Quellen und Nachweise

ORD-Eintrag
ord-91717ff110154b81822a4567b57777c7
Quelldatensatz
uspto-grants-2015_01
Patentnummer
US08933232B2

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