Piloty, Markus published the artcileInvestigations on the reaction of amino acids with α-dicarbonyl compounds. II. Volatile products of the reaction of amino acids with diacetyl (2,3-butanedione), COA of Formula: C5H7NO, the publication is Zeitschrift fuer Lebensmittel-Untersuchung und -Forschung (1979), 168(5), 374-80, database is CAplus.
Glycine [56-40-6], α-alanine [56-41-7], β-alanine [107-95-9], phenylalanine [63-91-2], glycylalanine [3695-73-6], and NH3 were reacted with diacetyl [431-03-8], in an aqueous medium. In addition to several N-free compounds, some nitrogenous heterocyclic products belonging to the classes oxazoles, pyrazines, pyrroles, and pyridines were identified. The pyridine derivatives have not previously been described in the literature. Spectral data are given and possible mechanisms of formation discussed in relation to food aroma.
Zeitschrift fuer Lebensmittel-Untersuchung und -Forschung published new progress about 20662-83-3. 20662-83-3 belongs to oxazolidine, auxiliary class Oxazole, name is 4,5-Dimethyloxazole, and the molecular formula is C5H7NO, COA of Formula: C5H7NO.
Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem