Sodium hydride → ethyl 4-{N-[3-(3-chlorobenzoyl)-6-methylpyridin-2-yl]-N-ethylcarbamoyl}butanoate

Beteiligte Stoffe

Reaktionsschritte

A DMF solution of 3-(3-chlorobenzoyl)-2-ethylamino-6-methylpyridine was treated with 60% sodium hydride and then reacted with monoethyl chloroglutarate under heating. Thereafter, the whole was worked up and purified in a usual manner to obtain ethyl 4-{N-[3-(3-chlorobenzoyl)-6-methylpyridin-2-yl]-N-ethylcarbamoyl}butanoate. The resulting compound was reacted with sodium methoxide in ethanol under heating, then concentrated sulfuric acid was added to the reaction mixture, followed by reaction under heating for 2 days. Thereafter, the reaction mixture was worked up and purified in a usual manner to obtain ethyl 3-[4-(3-chlorophenyl)-1-ethyl-7-methyl-2-oxo-1,2-dihydro-1,8-naphthyridin-3-yl]propanoate. MS: 399.

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