Wang, Changliu published the artcileYnamide-Mediated Thioamide and Primary Thioamide Syntheses, Name: Pyrazine-2-carbothioamide, the publication is Journal of Organic Chemistry (2022), 87(9), 5617-5629, database is CAplus and MEDLINE.
Environmentally friendly ynamide-mediated thioamidation of monothiocarboxylic acids with amines or ammonium hydroxide for the synthesis of thioamides was described. Simple and mild reaction conditions tolerate a wide variety of functional groups such as hydroxyl, ester, tertiary amine, ketone, and amide moieties. Readily available NaSH served as the sulfur source, avoiding the use of toxic, expensive, and malodorous organic sulfur reagents and making this strategy environmentally friendly and practical. Importantly, the stereochem. integrity of α-chiral monothiocarboxylic acids was maintained during the activation step and subsequent aminolysis process, which offers a racemization-free strategy for peptide and protein C-terminal modification. Furthermore, a number of thioamide-modified drugs were prepared in good yields by this protocol and the synthesized primary thioamides were transformed into backbone thiazolyl modification peptides.
Journal of Organic Chemistry 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 C6H8O3, Name: Pyrazine-2-carbothioamide.
Referemce:
https://en.wikipedia.org/wiki/Pyrazine,
Pyrazine | C4H4N2 – PubChem