Reaktion #59496

Reaktionsgleichung

water

2,3-dihydro-2-phenyl-benzo[1,4]dioxin-6-ol

2-chloro-5-nitropyridine

potassium carbonate

→

2-(2,3-Dihydro-2-phenyl-benzo[1,4]dioxin-6-yloxy)-5-nitropyridine

Lösungsmittel

dimethylformamide

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwas added
2. 2
   Filtrationthe precipitated product was filtered
3. 3
   Waschenwashed with water and 2-propanol
4. 4
   Sonstigedried under reduced pressure

Vorschrift

A solution of 2,3-dihydro-2-phenyl-benzo[1,4]dioxin-6-ol (80 mg), 2-chloro-5-nitropyridine (56 mg) and potassium carbonate (52 mg) in dimethylformamide (1.0 ml) was stirred at 120° C. for 2 hrs. After cooling the mixture water (10 ml) was added and the precipitated product was filtered, washed with water and 2-propanol and dried under reduced pressure. Yield is 60 mg and mp 163-170° C. 1H NMR (DMSO-d6) δ=4.16 (dd, J=8.5, 11.6 Hz, 1H), 4.47 (dd, J=11.6, 2.6 Hz, 1H), 5.28 (dd, J=2.6, 8.5 Hz, 1H), 6.75 (dd, J=2.6, 8.8 Hz, 1H), 6.88 (d, J=2.6 Hz, 1H), 7.05 (d, J=8.8 Hz, 1H), 7.21 (d, J=9.1 Hz, 1H), 7.39-7.52 (m, 5H), 8.60 (dd, J=2.8, 9.1 Hz, 1H), 9.05 (d, J=2.8 Hz, 1H).

Quelle