Cesium carbonate → HCID 90404063, Verbindung

HRID 573861

Reaktionsgleichung

Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]=[CH:11][N:10]([C:13]3[CH:18]=[CH:17][C:16]([O:19][C:20]([F:23])([F:22])[F:21])=[CH:15][CH:14]=3)[N:9]=2)=[CH:4][CH:3]=1.[C:24]([O:28][C:29]([NH:31][CH2:32][CH2:33][B-](F)(F)F)=[O:30])([CH3:27])([CH3:26])[CH3:25].[K+].C(=O)([O-])[O-].[Cs+].[Cs+].C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC(C)C)=CC=CC=2OC(C)C)CCCCC1>C1(C)C=CC=CC=1.O.C(OCC)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[F:21][C:20]([F:23])([F:22])[O:19][C:16]1[CH:17]=[CH:18][C:13]([N:10]2[CH:11]=[N:12][C:8]([C:5]3[CH:6]=[CH:7][C:2]([CH2:33][CH2:32][NH:31][C:29](=[O:30])[O:28][C:24]([CH3:27])([CH3:26])[CH3:25])=[CH:3][CH:4]=3)=[N:9]2)=[CH:14][CH:15]=1

Komponenten

Reaktionsbedingungen

Temperatur: 95 °C

Versuchsvorschrift

To a solution of 3-(4-bromophenyl)-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazole (C52) (0.13 g, 0.32 mmol) in toluene (4 mL) and water (1 mL) was added potassium (2-((tert-butoxycarbonyl)amino)ethyl)trifluoroborate (0.082 g, 0.33 mmol), palladium(II) acetate (0.027 g, 0.027 mmol), cesium carbonate (0.33 g, 1.0 mmol), and dicyclohexyl(2′,6′-diisopropoxy-[1,1′-biphenyl]-2-yl)phosphine (0.016 g, 0.034 mmol), and the solution was stirred under nitrogen and heated to 95° C. for 8 hours. The solution was then cooled and diluted with diethyl ether (5 mL) and adsorbed onto a silica gel pre-column. Flash column chromatography using 0-50% ethyl acetate/hexanes as eluent furnished the title compound as a light tan solid (0.095 g, 63%): mp 149-153° C.; 1H NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.18-8.10 (m, 2H), 7.84-7.77 (m, 2H), 7.43-7.35 (m, 2H), 7.31 (d, J=8.2 Hz, 2H), 4.58 (d, J=8.1 Hz, 1H), 3.49-3.34 (m, 1H), 2.87 (t, J=7.0 Hz, 1H), 1.44 (s, 9H); ESIMS m/z 449 ([M+H]+).

Aufarbeitung

temperatureThe solution was then cooled

Quellen und Nachweise

ORD-Eintrag: ord-029b5ea5932e49e8b2abb0dc2dd146aa
Quelldatensatz: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09029560B2

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