Benzyl Bromide → Tert-butyl[2-(1-phenyl-ethylsulfanyl)-benzoimidazol-1-yl]-acetate

Participants

Reaction Steps

A mixture of tert-butyl (2-mercapto-benzoimidazol-1-yl)-acetate (Intermediate 3-I, 50 mg, 0.19 mmol), 1-bromomethyl-benzene (38.5 mg, 28.5 μl, 0.2 mmol) and K2CO3 (52 mg, 0.38 mmol) in acetone (3 ml) is stirred at reflux overnight. The suspension is cooled to rt and filtered through Celite. Evaporation of the solvent in vacuo and drying under high vacuum yields quantitatively the title compound as a slightly yellow oil. This material is used in the next step without further purification. tR=7.45 min (LC-1), MS (pos.): m/z 369.21 [M+H]+; 1H-NMR (DMSO-d6): δ (ppm) 1.36 (s, 9H, tBu), 1.73 (d, 3H, Me), 4.94 (m, 2H, CH2CO2), 5.09 (q, 1H, SCHMePH), 7.16-7.20 (m, 2Harom), 7.26-7.36 (m, 3Harom), 7.44-7.50 (m, 3Harom), 7.61 (m, 1Harom).

Provenance & Evidence