Benzoic acid, 2-isothiocyanato-, methyl ester → HCID 14013061, compound

Participants

Reaction Steps

To a stirred mixture of 5.5 parts of 4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]methyl]-1-piperidineethanamine and 90 parts of tetrahydrofuran was added dropwise a solution of 3.8 parts of methyl 2-isothiocyanatobenzenecarboxylate in 18 parts of tetrahydrofuran (exothermic reaction). Upon completion, stirring was continued for 1 hour. The reaction mixture was evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol, saturated with ammonia, (95:5 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from acetonitrile. The product was filtered off and recrystallized from methanol. The product was filtered off and dried, yielding 3.6 parts (46%) of 3-[2-[4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]methyl]-1-piperidinyl]ethyl]-2,3-dihydro-2-thioxo-4(1H)-quinazolinone; mp. 218.2° C. (460).

Provenance & Evidence