Abstract A series of heterocyclic coupling agents having tuned hydrophobic chains, has been prepared by reaction of diamino or hydroxy-aminopyridines and p-aminosalicylic acid. The acetylation of amino group and hydroxyl in oxazole derivatives showed a selectivity depending on wheter acetic anhydride or acetyl chloride was used. Correlations between structure and spectroscopic data, including related compounds previously described, are ...
![3-amino-6-(1,3-dihydroimidazo[4,5-c]pyridin-2-ylidene)cyclohexa-2,4-dien-1-one结构式](https://image.chemsrc.com/caspic/192/95377-65-4.png)