Freeman, Fillmore et al. published their research in Synthesis in 1997 |CAS: 5098-14-6

The Article related to cyanooxazolamine preparation, aminooxazolenitrile preparation, oxazole amino cyano preparation, carboxylic acid aminomalononitrile tosylate cyclocondensation, Heterocyclic Compounds (More Than One Hetero Atom): Oxazoles, Isoxazoles and other aspects.Computed Properties of 5098-14-6

On August 31, 1997, Freeman, Fillmore; Chen, Tao; Van der Linden, Johannes B. published an article.Computed Properties of 5098-14-6 The title of the article was Synthesis of highly functionalized 1,3-oxazoles. And the article contained the following:

A convenient 1-pot method for the preparation of 2-substituted 5-amino-4-cyano-1,3-oxazoles from carboxylic acids and aminomalononitrile tosylate is reported. The experimental process involved the reaction of 2-Aminomalononitrile 4-methylbenzenesulfonate(cas: 5098-14-6).Computed Properties of 5098-14-6

The Article related to cyanooxazolamine preparation, aminooxazolenitrile preparation, oxazole amino cyano preparation, carboxylic acid aminomalononitrile tosylate cyclocondensation, Heterocyclic Compounds (More Than One Hetero Atom): Oxazoles, Isoxazoles and other aspects.Computed Properties of 5098-14-6

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts