Guernon, Jason M. published the artcile3-Bromocyclohexane-1,2-dione as a useful reagent for Hantzsch synthesis of thiazoles and the synthesis of related heterocycles, Safety of Pyrazine-2-carbothioamide, the publication is Tetrahedron Letters (2011), 52(28), 3633-3635, database is CAplus.
The authors describe the use of 3-bromocyclohexane-1,2-dione, an air stable, versatile reagent for the Hantzsch thiazole synthesis and the synthesis of other closely related heterocycles. For example, cyclocondensation of 3-bromocyclohexane-1,2-dione with RC(S)NH2 (R = Ph, 4-pyridyl, t-Bu, etc.) gave I.
Tetrahedron Letters published new progress about 4604-72-2. 4604-72-2 belongs to pyrazines, auxiliary class Pyrazine,Amine,Amide, name is Pyrazine-2-carbothioamide, and the molecular formula is C5H5N3S, Safety of Pyrazine-2-carbothioamide.
Referemce:
https://en.wikipedia.org/wiki/Pyrazine,
Pyrazine | C4H4N2 – PubChem