Aniline → 5,7-dioxo-6,7-dihydro-5H-[2]pyrindine-6-carboxylic acid phenylamide

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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 phenylamide was obtained starting from 5,7-dioxo-6,7-dihydro-5H-[2]pyrindine-6-carboxylic acid ethyl ester and aniline. The desired product was obtained as a brownish orange powder. ESI−MS: m/z 267 (MH+); 1H-NMR (DMSO-d6): δ6.93 (1H, t, J=7.3 Hz), 7.26 (2H, t-like, 7.3 Hz), 7.33 (1H, dd, J=1.4 Hz, 4.6 Hz), 7.59 (2H, d, J=7.3 Hz), 8.51 (1H, d, J=1.4 Hz), 8.72 (1H, d, J=4.6 Hz), 10.78 (1H, brs).

Provenance & Evidence