Toluene → HCID 57786317, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of tert-butyl(3-{2-[(2,4-dichlorophenyl)(hydroxy)methyl]-7-(diethylamino)-1H-benzimidazol-1-yl}propyl)carbamate (Reference example 228, 500 mg, 0.959 mmol) and triphenylphosphine (377 mg, 1.44 mmol) in tetrahydrofuran (30 mL) was added a solution of diethyl azodicarboxylate in toluene (40%, 0.655 mL, 1.44 mmol) at 0° C. The mixture was stirred at 0° C. for 2 h, concentrated in vacuo, and purified by column chromatography on silica gel eluting with a 10-20% ethyl acetate/n-hexane gradient mixture to give a colorless amorphous solid (138 mg, 0.274 mmol, 29%).

Provenance & Evidence