Benzene → N-[2-{4-[3-(2-cyanoethyl)-2,3-dihydro-2-oxo-1H-benzimidazol-1-yl]-1-piperidinyl}ethyl]-4-fluorobenzamide

Beteiligte Stoffe

Reaktionsschritte

A mixture of 1.68 parts of 1-(4-fluorobenzoyl)aziridine, 3.07 parts of 2,3-dihydro-2-oxo-3-(4-piperidinyl)-1H-benzimidazole-1-propanenitrile hydrochloride, 1.65 parts of N,N-diethylethanamine, 10.8 parts of benzene and 1.6 parts of methanol is stirred and refluxed for 1.50 hours. The reaction mixture is cooled and poured onto water. The product is extracted with trichloromethane. The extract is dried, filtered and evaporated. The residue is crystallized from 2-propanol. The product is filtered off and recrystallized from 2-propanol, yielding 1part of N-[2-{4-[3-(2-cyanoethyl)-2,3-dihydro-2-oxo-1H-benzimidazol-1-yl]-1-piperidinyl}ethyl]-4-fluorobenzamide; mp. 172.2° C.

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