Methanol → 3-[5,6-Dimethyl-3-(4-methyl-benzo[b]thiophen-3-ylmethyl)-2-oxo-2,3-dihydro-benzimidazol-1-yl]-3-ethoxy-propionic acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

To a mixture of 5,6-Dimethyl-1-(4-methyl-benzo[b]thiophen-3-ylmethyl)-1,3-dihydro-benzimidazol-2-one (0.1 g, 0.31 mmol) and K2CO3 (86 mg, 0.62 mmol) in a microwave vial was added Ethyl 3-ethoxyacrylate (0.45 g, 3.1 mmol). The reaction mixture was heated to 130° C. for 20 min in a microwave. The reaction mixture was then diluted with ethyl acetate (since there was some insoluble material left, MeOH was added to the solution mixture to solubilize the material). This organic phase was washed with water (×2). The organic phase was dried over Na2SO4 and concentrated. The resulting residue was purified by silica gel prep TLC using 4:1 Hexane:ethyl acetate as an eluent to afford 45 mg of the desired product as an oily foam. LCMS (ESMS): m/z 467.32 (M+H+).

Provenance & Evidence