3-Chloroaniline → 5,7-dioxo-6,7-dihydro-5H-[2]pyrindine-6-carboxylic acid (3-chlorophenyl)-amide

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Reaction Steps

In a similar manner to Example 1a, 5,7-dioxo-6,7-dihydro-5H-[2]pyrindine-6-carboxylic acid (3-chloro-phenyl)-amide was obtained starting from 5,7-dioxo-6,7-dihydro-5H-[2]pyrindine-6-carboxylic acid ethyl ester and 3-chloro-phenylamine. The desired product was obtained as a brownish orange powder. ESI−MS: m/z 301 (MH+); 1H-NMR (DMSO-d6): δ6.96-7.00 (1H, m), 7.27-7.29 (2H, m), 7.35 (1H, dd, J=1.3 Hz, 4.6 Hz), 7.98-7.99 (1H, m), 8.53 (1H, d, J=1.0 Hz), 8.74 (1H, d, J=4.6 Hz), 10.92 (1H, brs).

Provenance & Evidence