Potassium Carbonate → Tert-butyl[2-(2-methoxy-benzylsulfanyl)-benzoimidazol-1-yl]-acetate

Participants

Reaction Steps

A suspension of K2CO3 (31.4 mg, 0.23 mmol) in acetone (3 ml) containing tert-butyl (2-mercapto-benzoimidazol-1-yl)-acetate (Intermediate 3-I, 30 mg, 0.11 mmol) and 2-methoxybenzyl chloride (17.8 mg, 15.8 μl, 0.11 mmol) is stirred at rt overnight. Filtration over Celite and evaporation of the solvent in vacuo affords the pure title compound (27 mg) in 62% yield as a yellow oil: tR=7.47 min (LC-1), MS (pos.): m/z 385.20 [M+H]+; 1H NMR (DMSO-d6): δ (ppm) 1.37 (s, 9H, tBu), 3.90 (s, 3H, OCH3), 4.53 (s, 2H, SCH2), 4.92 (s, 2H, CH2CO2), 6.87 (t, 1Harom), 7.03 (d, 1Harom), 7.21 (m, 2Harom), 7.28 (t, 1Harom), 7.40 (d, 1Harom), 7.50 (m, 1Harom), 7.64 (m, 1Harom).

Provenance & Evidence