18-Crown-6 → HCID 21942479, compound

Participants

Reaction Steps

Alternatively, treatment of 3-(3-fluoropyrid-2-yl)-5-(3-fluoro-5-cyanophenyl)-1,2,4-oxadiazole with potassium 4-dimethylaminobutoxide in N.N-dimethylformamide with a catalytic amount of 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) and heating at 110° C. affords crude product. Standard work up and purification by one or more methods, including silica gel chromatography, recystallization, trituration, and reversed-phase high-performance liquid chromatography (RP-HPLC) affords purified 3-(3-(4-dimethylaminobutoxy)-pyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-1,2,4-oxadiazole.

Provenance & Evidence