Campaigne, E. published the artcileReactions of 4-chloroacetoacetic esters with thioureas, Quality Control of 64987-16-2, the publication is Journal of Heterocyclic Chemistry (1980), 17(6), 1255-7, database is CAplus.
Thiazoles I (R = Me, Et) were prepared in 61 and 83% yields, resp., by cyclizing ClCH2COCH2CO2R (II) with H2NCSNH2. Cyclizing II with III (n = 1, 2) gave 50-88% IV. Hydrolysis of IV (R = Et) gave IV (R = H).
Journal of Heterocyclic Chemistry published new progress about 64987-16-2. 64987-16-2 belongs to thiazole, auxiliary class Thiazole,Amine,Ester, name is Methyl 2-(2-aminothiazol-4-yl)acetate, and the molecular formula is C6H8N2O2S, Quality Control of 64987-16-2.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica