Indole-3-Acetic Acid → HCID 20222903, compound

Participants

Reaction Steps

To a stirred mixture of 3.5 parts of 1H-indol-3-acetic acid, 4.05 parts of N,N-diethylethanamine and 260 parts of dichloromethane were added 5.1 parts of 2-chloro-1-methylpyridinium iodide and stirring was continued for 15 minutes at room temperature. Then there were added 7.2 parts of N-[1-(2-aminoethyl)-4-piperidinyl]-1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-amine and the whole was stirred for 1 hour at room temperature. The reaction mixture was poured onto water and the layers were separated. The organic phase was dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (96:4 by volume) saturated with ammonia, as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from acetonitrile, yielding 4.5 parts (43%) of N-[2-[4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]amino]-1-piperidinyl]ethyl]-1H-indol-3-acetamide; mp. 193.6° C. (compound 77).

Provenance & Evidence