Reaktion #1554570

Reaktionsgleichung

1-(4-Cyano-2-fluorophenyl)-7-methoxy-3-methyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-8-yl trifluoromethanesulfonate

3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline

tripotassium phosphate

→

3-fluoro-4-(7-methoxy-3-methyl-2-oxo-8-quinolin-3-yl-2,3-dihydroimidazo[4,5-c]quinolin-1-yl)benzonitrile

Ausbeute 54.1%

Lösungsmittel

oxygen

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe mixture was then decanted off into water (50 ml)
2. 2
   SonstigeThe precipitate formed
3. 3
   Filtrationwas filtered off with suction
4. 4
   Waschenrinsed with water
5. 5
   Filtrationfiltered off
6. 6
   Waschenrinsed with 2-propanol

Vorschrift

1-(4-Cyano-2-fluorophenyl)-7-methoxy-3-methyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-8-yl trifluoromethanesulfonate (79 mg, 159 μmol), 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline (325 mg, 1.27 mmol), tripotassium phosphate (70 mg, 319 μmol) and trans-bis(tricyclohexylphosphine)palladium(II) dichloride (35 mg, 48 μmol) were dissolved in oxygen-free N,N-dimethylformamide (4.7 ml). The reaction mixture was subsequently heated at 130° C. for 90 min (microwave). The mixture was then decanted off into water (50 ml) and stirred for a further 30 min. The precipitate formed was filtered off with suction and rinsed with water. The filter cake was subsequently suspended in a little cold dimethyl sulfoxide, filtered off and rinsed with 2-propanol, giving 3-fluoro-4-(7-methoxy-3-methyl-2-oxo-8-quinolin-3-yl-2,3-dihydroimidazo[4,5-c]quinolin-1-yl)benzonitrile (41 mg, 86 μmol) as colourless solid after drying in a high vacuum. MS: 476.1 (M+H+), TLC (HPTLC): Rf=0.24 (ethyl acetate/ethanol 5:1, parts by volume).

Quelle