Sodium Carbonate → 3-(4,5-Dimethoxy-2-naphthalen-2-ylbenzylidene)-1,3-dihydroindol-2-one

Beteiligte Stoffe

Reaktionsschritte

Tetrakis(triphenylphosphine)palladium (0) (0.02 g) was added to a solution of 3-(3-bromo-4,5-dimethoxybenzylidene)-1,3-dihydroindol-2-one (0.20 g) in toluene (1 ml) and ethanol (1 ml) followed by addition of 2M aqueous sodium carbonate (1.1 ml). To this mixture was added naphthalene-2-boronic acid (0.11 g), and the mixture was held at 100° C. in a sealed tube for 12 hours. The precipitate which formed was filtered, washed with ethanol and then dissolved in 20% methanol/toluene, filtered and concentrated. The resulting solid was triturated with hexanes and dried to afford 0.07 g (29%) of 3-(4,5-dimethoxy-2-naphthalen-2-ylbenzylidene)-1,3-dihydroindol-2-one as an orange solid.

Herkunft & Nachweise