Abstract The reaction of benzoin (I) with propanedinitrile in dimethylformamide catalyzed with diethylamine gives directly 2-amino-3-cyano-4, 5-diphenylfurane (III), whereas this reaction catalyzed with glycine in ethanol produces the intermediate II which is transformed into III thermally or by catalysis with diethylamine. The aminofurane III reacts with 4- nitrobenzaldehyde to give azomethine IV, and it produces 2-amino-3-thioamido-4, 5- ...
![2-[(4-nitrophenyl)methylideneamino]-4,5-diphenylfuran-3-carbonitrile Structure](https://image.chemsrc.com/caspic/023/18031-67-9.png)
