Carreiras, M. Carmo published the artcileSynthesis and Friedlander reactions of 5-amino-4-cyano-1,3-oxazoles, Synthetic Route of 5098-14-6, the publication is Heterocycles (2007), 71(10), 2249-2262, database is CAplus.
The synthesis of a series of 2-substituted 5-amino-4-cyano-1,3-oxazoles and the Friedlander-type reaction of some of them with cyclic ketones was described. Oxazolo[5,4-b]quinoline derivatives were tacrine analogs provided by the Friedlander reaction. Their anticholinesterase activity has been investigated and the compound I was found to be the most active (60% inhibition), at the maximum soluble concentration
Heterocycles published new progress about 5098-14-6. 5098-14-6 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Salt,Sulfonic acid,Amine,Benzene, name is 2-Aminomalononitrile 4-methylbenzenesulfonate, and the molecular formula is C10H11N3O3S, Synthetic Route of 5098-14-6.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts