35892-59-2Relevant academic research and scientific papers
Synthesis of [1,3,4]thiadiazolo[3,2-a]pyrimidines in the presence of formic acid
Takenaka, Keiko,Tsuji, Tadakazu
, p. 1367 - 1370 (2007/10/03)
Formic acid-phosphorus pentoxide was effective for the preparation of 5,7-dimethyl[1,3,4]thiadiazolo- and -[1,3]thiazolo[3,2-a]pyrimidin-4-ium salts. Further, the pyrimidine ring transformation and the isocyanation of 5imino-6H-[1,3,4]thiadiazolo- and -[1,3]thiazolo[3,2-a]pyrimidin-7-ones were carried out in the presence of formic acid and triethyl orthoformate, respectively.
