Cesium carbonate → 1-[6-(2-Chlorophenyl)-5-(4-chlorophenyl)furo[2,3-b]pyridin-2-yl]-2,2-dimethylpropan-1-one

HRID 8814

Reaktionsgleichung

[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[NH:13][C:12](=[O:14])[C:11]([CH:15]=O)=[CH:10][C:9]=1[C:17]1[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=1.Cl[CH2:25][C:26](=[O:31])[C:27]([CH3:30])([CH3:29])[CH3:28].C([O-])([O-])=O.[Cs+].[Cs+]>CCOCC>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[N:13]=[C:12]2[O:14][C:25]([C:26](=[O:31])[C:27]([CH3:30])([CH3:29])[CH3:28])=[CH:15][C:11]2=[CH:10][C:9]=1[C:17]1[CH:18]=[CH:19][C:20]([Cl:23])=[CH:21][CH:22]=1

Komponenten

Reaktionsbedingungen

Temperatur: 60 °C

Versuchsvorschrift

To a solution of 0.38 g of the product of Step A dissolved in 3 mL of DW, was added 0.14 mL (1.07 mmol) of 1-chloropinacolone and 0.65 g of Cs2CO3. After stirring for 2 h, another 0.05 mL (0.38 mmol) of 1-chloropinacolone was added and the stirring was continued for another 1 h. Additional 0.325 g (1 mmol) of Cs2CO3 was added and the solution was heated in a 60° C. bath for 3 h. The solution was cooled, diluted with Et2O, washed with water, brine, dried and concentrated. The residue was purified on a prep TLC plate using 20% EtOAc/hexane as eluant to afford the title compound. HPLC/MS: 424 (M+1), 426 (M+3); Rt=4.49 min.

Aufarbeitung

waitthe stirring was continued for another 1 h
temperatureThe solution was cooled
washwashed with water, brine
customdried
concentrationconcentrated
customThe residue was purified on a prep TLC plate

Quellen und Nachweise

ORD-Eintrag: ord-d45f944e0ce54e2692d6389881056355
Quelldatensatz: uspto-grants-2006_08
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07091216B2

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