Potassium Iodide → HCID 13588090, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1.14 parts of 2-chloropyrimidine, 3.7 parts of N-[1-(2-aminoethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine, 1.06 parts of sodium carbonate, 0.1 parts of potassium iodide and 135 parts of N,N-dimethylformamide was stirred and heated overnight at 70° C. The reaction mixture was poured onto water and the product was extracted with 4-methyl-2-pentanone. The extract 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 tbe eluent was evaporated. The residue was crystallized from acetonitrile, yielding 1.5 parts (34%) of 1-[(4-fluorophenyl)methyl]-N-[1-[2-[(2-pyrimidinyl)amino]ethyl]-4piperidinyl]-1H-benzimidazol -2-amine; mp. 168.4° C. (compound 1).

Provenance & Evidence