Potassium Iodide → 2-Methyl-2-{[4-(2-phenoxy-ethoxy)-benzo[b]thiophene-5-carbonyl]-amino}-propionic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

60 mg 2-[(4-Hydroxy-benzo[b]thiophene-5-carbonyl)-amino]-2-methyl-propionic acid tert-butyl ester, 70 mg cesium carbonate, 36 mg of (2-bromo-ethoxy)-benzene and 6 mg potassium iodide were dissolved in 1 ml of N,N-dimethylformamide and stirred for 2 h at 60° C. 10 ml of ethyl acetate and 10 ml of brine were added to the reaction. The organic layer was separated and washed again with 10 ml of brine. It was then dried over magnesium sulphate, filtered and concentrated in vacuo. The resulting residue was purified by reversed phase HPLC (acetonitrile/water) to afford 58 mg of 2-methyl-2-{[4-(2-phenoxy-ethoxy)-benzo[b]thiophene-5-carbonyl]-amino}-propionic acid tert-butyl ester.

Provenance & Evidence