Benzyl Bromide → HCID 18705806, compound

Participants

Reaction Steps

Sodium hydride (0.96 g, 24 mmol) was washed with hexane under nitrogen and suspended in DMF (10 mL). 2-(Dipropylamino)-2,3-dihydro-6-hydroxy-1H-inden-5-yl trifluoromethanesulfonate (69, 7.6 g, 20 mmol) in DMF (30 mL) was added dropwise at 0-5° C. over 30 min and the mixture stirred 30 min. Benzyl bromide (5.13 g, 30 mmol) in DMF (5 mL) was added and the resulting mixture was stirred 1 h. The reaction was quenched with saturated NaHCO3 and extracted with EtOAc. The organic layer was washed with water, brine, dried (MgSO4), filtered and concentrated to give the crude product. Chromatographic purification yielded pure product 70 as an oil that was converted into the HCl salt and crystallized from EtOAc/MeOH/hexane to give a white solid (mp 162-163° C.).

Provenance & Evidence