Tetrahydro-4H-pyran-4-one → 6'-(pyridin-4-yl)-2,3,5,6-tetrahydro-1'H-spiro [pyran-4,2'-thieno[3,2-d]pyrimidin]-4'(3'H)-one

HRID 2363929Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2363929
[NH2:1][C:2]1[CH:6]=[C:5]([C:7]2[CH:12]=[CH:11][N:10]=[CH:9][CH:8]=2)[S:4][C:3]=1[C:13]([NH2:15])=[O:14].[O:16]1[CH2:21][CH2:20][C:19](=O)[CH2:18][CH2:17]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.C(=O)([O-])O.[Na+]>C1(C)C=CC=CC=1>[N:10]1[CH:9]=[CH:8][C:7]([C:5]2[S:4][C:3]3[C:13](=[O:14])[NH:15][C:19]4([CH2:20][CH2:21][O:16][CH2:17][CH2:18]4)[NH:1][C:2]=3[CH:6]=2)=[CH:12][CH:11]=1

Komponenten

6

Edukt 4

HCID 121599Tetrahydro-4H-pyran-4-oneHCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 99208523-Amino-5-(pyridin-4-yl)thiophene-2-carboxamide

Produkt 1

HCID 667430106'-(pyridin-4-yl)-2,3,5,6-tetrahydro-1'H-spiro [pyran-4,2'-thieno[3,2-d]pyrimidin]-4'(3'H)-oneAusbeute 46,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

A mixture of 3-amino-5-(pyridin-4-yl)thiophene-2-carboxamide (0.078 g, 0.36 mmol), tetrahydro-4H-pyran-4-one (0.200 g, 2.00 mmol), p-toluenesulfonic acid monohydrate (0.076 g, 0.40 mmol) and toluene (3.0 mL) was stirred for 2 h at 90° C. The mixture was poured into aqueous sodium hydrogen carbonate (50 mL). Extraction with ethyl acetate/tetrahydrofuran (2:1, 2×30 mL), drying over magnesium sulfate, filtration and concentration at reduced pressure gave an oil. The oil was purified by column chromatography (12 g, silica, Combiflash, dichloromethane to 80:20 dichloromethane/methanol) to afford the title compound (0.050 g, 46%) as a yellow solid:

Aufarbeitung

  1. extractionExtraction with ethyl acetate/tetrahydrofuran (2:1, 2×30 mL)
  2. dry with materialdrying over magnesium sulfate, filtration and concentration at reduced pressure
  3. customgave an oil
  4. customThe oil was purified by column chromatography (12 g, silica, Combiflash, dichloromethane to 80:20 dichloromethane/methanol)

Quellen und Nachweise

ORD-Eintrag
ord-c69849ac086244bb9f99c72fdfa70fd1
Quelldatensatz
uspto-grants-2014_04
Patentnummer
US08691828B2

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