Botsi, Sofia published the artcileOne or two-step acid-mediated cyclocondensation process for the preparation of 5-carbethoxy-2-thiouracils from diethyl ethoxymethylenemalonate and thioureas, SDS of cas: 6972-05-0, the publication is Heterocyclic Communications (2007), 13(4), 229-234, database is CAplus.
An acid-mediated synthesis of 5-carbethoxy-2-thiouracils via a one-step cyclocondensation of di-Et ethoxymethylenemalonate and thioureas or under milder reaction conditions, via intermediate thioureidomethylenemalonates, was described here.
Heterocyclic Communications published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, SDS of cas: 6972-05-0.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia