Sodium Thiosulfate → 9-([2,2'-Binaphthalen]-7-yl)-10-bromoanthracene

Participants

Reaction Steps

Under the nitrogen atmosphere, 9-([2,2′-binaphthalen]-7-yl) anthracene (10.0 g) as the ninth intermediate compound, N-bromosuccinimide (NBS) (4.6 g), iodine (0.1 g), and THF (60 ml) were added to a flask and stirred overnight at room temperature. By adding an aqueous solution of sodium thiosulfate, the reaction was terminated. Liquid separation was performed by adding water and toluene. Subsequently, the solid obtained by distillation of the organic layer under reduced pressure was purified by silica gel column chromatography (solvent: toluene). The solid obtained by distillation of the solvent under reduced pressure was washed with heptane to give 9-([2,2′-binaphthalen]-7-yl)-10-bromoanthracene (11.0 g) as a tenth intermediate compound. The scheme is shown in the following “Reaction 15”.

Provenance & Evidence