Benzyl Bromide → HCID 21919643, compound

Participants

Reaction Steps

To a solution of ethoxy acetylene (9.95 g of 50% w/w. solution in hexanes, 70 mmol) in THF (100 ml) at −78° was added n-butyl lithium (31 ml of 2.5M solution in hexanes, 78 mmol). The mixture was stirred at this temperature for 2 h. prior to the addition of HMPA (20 ml), stirring was continued for a further 15 min. before the addition of benzyl bromide (9.2 ml). The reaction mixture was allowed to warm to room temperature overnight before partitioning between EtOAc (300 ml) and water (200 ml). The organics were separated, washed with water (5×200 ml), brine (200 ml), dried (Na2SO4), filtered and concentrated in vacuo to give the title compound as a mobile brown oil (11.1 g, 99%). δH (300 MHz, CDCl3) 7.15–7.57 (5H, m), 4.12 (2H, q, J 7.1 Hz), 3.60 (2H, s), 1.41 (3H, t, J 7.1 Hz); m/z (ES+, 70V) MH+161.

Provenance & Evidence