Abstract A new and convenient procedure for the synthesis of 1, 6-naphthyridin-2 (1H)-ones and their derivatives is described. In the first scheme 5-acetyl-6-[2-(dimethylamino) ethenyl]- 1, 2-dihydro-2-oxo-3-pyridinecarbonitrile (4) obtained by the reaction of N, N- dimethylformamide dimethyl acetal with 5-acetyl-1, 2-dihydro-6-methyl-2-oxo-3- pyridinecarbonitrile (3) was cyclized to 1, 2-dihydro-5-methyl-2-oxo-1, 6-naphthyridine-3- ...
![6-[2-(dimethylamino)ethenyl]-5-propanoyl-1H-pyridin-2-one结构式](https://image.chemsrc.com/caspic/393/88877-01-4.png)
![5-甲基[1,6]萘啶-2(1H)-酮结构式](https://image.chemsrc.com/caspic/429/88296-61-1.png)
![Fluoral-P(=4-氨基-3-戊烯-2-酮)[用于醛的荧光试剂]结构式](https://image.chemsrc.com/caspic/096/1118-66-7.png)
