Dimethylformamide → HCID 22009755、化合物

関与物質

反応手順

A mixture of 4-[4-[2-[(E)-2-phenylethenyl]-4-oxazolylmethoxy]phenyl]butyl methanesulfonate (430 mg), ethyl 2-imidazolecarboxylate (155 mg), potassium carbonate (305 mg) and N,N-dimethylformamide (10 ml) was stirred for two hours at temperatures ranging from 80 to 90° C. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried (MgSO4), and concentrated. The residue was subjected to a silica gel column chromatography. The crystalline product obtained from the fraction eluted with ethyl acetate-hexane (2:1, v/v) was recrystallized from ethyl acetate-hexane to give ethyl 1-[4-[4-[2-[(E)-2-phenylethenyl]-4-oxazolylmethoxy]phenyl]butyl]-2-imidazolecarboxylate (280 mg, 60%) as colorless prisms, mp 96-97° C.

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