N-methyl-2-pyrrolidone → Methyl 6-t-butylamino-5-fluoro-2-(1,1,3,3-tetramethylbutylamino)nicotinate

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Reaction Conditions

Reaction Steps

To 7 ml N-methylpyrrolidone were added 2.44 g of methyl 6-t-butylamino-2,5-difluoronicotinate and 4.0 g of 1,1,3,3-tetramethylbutylamine, and the mixture was stirred at 140° C. for 16 hours and allowed to cool. After adding 50 ml of chloroform, the mixture was washed three times with 300 ml of distilled water. The chloroform layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The brown oily residue was subjected to column chromatography (silica gel, 40 g; eluent: chloroform:n-hexane, 1:1) to obtain 2.90 g of the title compound as a colorless oily residue.

Provenance & Evidence