1,2-Dibromoethane → 1,6-Dibromo-2-(2-bromoethoxy)naphthalene

Temperatur

0 °C

1,6-Dibromo-2-naphthol (15.0 g, 49.67 mmol) and 1,2-dibromoethane (46.7 g, 248.37 mmol) were added to a suspension of potassium carbonate (84.8 g, 74.51 mmol) in acetonitrile (500 mL) at rt. The reaction mixture was stirred for 48 h. Additional 1,2-dibromoethane (21.5 mL, 248.37 mmol) was added and the reaction mixture was stirred for 96 h at rt. The reaction mixture was cooled to 0° C. with an ice bath and filtered through a fritted glass funnel. The resulting filtrate was concentrated under reduced pressure to give the title compound (14.2 g, 69.9% yield) as a brown solid. GC/MS m/z 406 (M)+, RT 10.25 min; 1H NMR (400 MHz, acetone-d6) δ 14-8.09 (m, 2H), 7.96 (d, 1H), 7.71 (d, 1H), 7.54 (d, 1H), 4.64-4.60 (m, 2H), 3.90-3.86 (m, 2H).

1. stirringthe reaction mixture was stirred for 96 h at rt
2. filtrationfiltered through a fritted glass funnel
3. concentrationThe resulting filtrate was concentrated under reduced pressure

ORD-Eintrag

ord-26be35a68e7d47ae8aa3bb0fd838b34b

Quelldatensatz

uspto-grants-2009_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07592361B2