Dimethylformamide → HCID 69216313, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl (4-{4-[(4-chloromethyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}phenyl)acetate (0.66 g), tert-butyl 4-{4-[(E)-2-(3-hydroxy-1-phenyl-1H-pyrazol-4-yl)ethenyl]-5-methyl-1,3-thiazol-2-yl}piperazine-1-carboxylate (0.81 g), potassium carbonate (0.22 g) and N,N-dimethylformamide (20 mL) was stirred at 90° C. for 1 hr. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography and eluted with tetrahydrofuran-hexane (1:5, v/v) to give tert-butyl 4-{4-[(E)-2-(3-{[4-({2-[4-(2-ethoxy-2-oxoethyl)phenyl]-5-methyl-1,3-oxazol-4-yl}methoxy)-3-methoxybenzyl]oxy}-1-phenyl-1H-pyrazol-4-yl)ethenyl]-5-methyl-1,3-thiazol-2-yl}piperazine-1-carboxylate as crystals (0.53 g, yield 41%). Recrystallization from ethyl acetate-hexane gave pale-yellow prism crystals. melting point: 112-114° C.

Provenance & Evidence