Bulletin of the Chemical Society of Japan p. 637 - 638 (1982)
Update date:2022-08-04
Topics:
Tsuji, Tadakazu
Takenaka, Keiko
2,7-Disubstituted 5H-1,3,4-thiadiazolo<3,2-a>pyrimidin-5-ones were synthesized from the reaction of 3-amino-6-methyl-2-thiouracil with carboxylic acid or from that of thiosemicarbazide with carboxylic acid and β-keto ester in the presence of phosphorus pentaoxide and methanesulfonic acid.The synthesis of related compounds is also described.
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