Summary The reaction of malononitrile with α-chloro acetanilides 1 in presence of potassium carbonate yields the 1-aryl-5-oxo-Δ 2-pyrrolin-3-carbonitriles 2, in presence of triethylamine the 4, 6-diamino-1-aryl-2-oxo-2, 3-dihydropyrrolo [2, 3-b] pyridin-5-carbonitriles 3 are formed. From 2-chloroacetylamino-benzencarbonitrile and malononitrile the 5-amino-1- oxo-1, 2-dihydropyrrolo [1, 2-a] chinazolin-3-carbonitrile (4) arise. Analogously from the 2- ...
![4,6-二氨基-1-(4-甲氧基苯基)-2-氧代-2,3-二氢-1h-吡咯并[2,3-b]吡啶-5-甲腈结构式](https://image.chemsrc.com/caspic/360/124476-83-1.png)
![4,6-二氨基-2-氧代-1-苯基-2,3-二氢-1h-吡咯并[2,3-b]吡啶-5-甲腈结构式](https://image.chemsrc.com/caspic/446/124476-81-9.png)
