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Trifluoroacetic acid → 1-(4-Chloro-phenyl)-6-(4-iodo-phenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c)pyridine-3-carboxylic acid methyl ester

HRID 860831
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 860831
[CH3:1][O:2][C:3]([C:5]1[CH:13]2[C:8](N3CCOCC3)([C:9](=[O:21])[N:10]([C:14]3[CH:19]=[CH:18][C:17]([I:20])=[CH:16][CH:15]=3)[CH2:11][CH2:12]2)[N:7]([C:28]2[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=2)[N:6]=1)=[O:4].FC(F)(F)C(O)=O>C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[C:13]2[CH2:12][CH2:11][N:10]([C:14]3[CH:15]=[CH:16][C:17]([I:20])=[CH:18][CH:19]=3)[C:9](=[O:21])[C:8]=2[N:7]([C:28]2[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=2)[N:6]=1)=[O:4]
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Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 694457171-(4-Chloro-phenyl)-6-(4-iodo-phenyl)-7a-morpholin-4-yl-7-oxo-3a,4,5,6,7,7a-hexahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid methyl ester

Produkt 1

HCID 587660011-(4-Chloro-phenyl)-6-(4-iodo-phenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c)pyridine-3-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
25 °C

Versuchsvorschrift

A solution of 1-(4-chloro-phenyl)-6-(4-iodo-phenyl)-7a-morpholin-4-yl-7-oxo-3a,4,5,6,7,7a-hexahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid methyl ester (52, 595 mg, 1.0 mmol) in methylene chloride (CH2Cl2, 4 mL) was treated with trifluoroacetic acid (TFA, 1.0 mL) at 25° C., and the resulting reaction mixture was stirred at 25° C. for an additional 30 min. When HPLC and TLC showed the reaction was complete, the solvents were removed in vacuo. The residue was directly purified by flash column chromatography (SiO2, 5–20% EtOAc/hexane gradient elution) to afford the desired elimination product (53, 467 mg, 508 mg theoretical, 92%) as a pale-yellow oil, which solidified upon standing at room temperature in vacuo. For 53, CIMS m/z 508/510 (M++H, C20H15ClIN3O3).

Aufarbeitung

  1. customthe resulting reaction mixture
  2. customthe solvents were removed in vacuo
  3. customThe residue was directly purified by flash column chromatography (SiO2, 5–20% EtOAc/hexane gradient elution)
  4. customto afford the desired elimination product (53, 467 mg, 508 mg theoretical, 92%) as a pale-yellow oil, which
  5. customupon standing at room temperature in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-054e8fdb5c1846eb817b087f0d28d972
Quelldatensatz
uspto-grants-2006_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07153960B2

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