SCHEDULED MAINTENANCE
The main products from the title reactions were 7H-thiazolo[3,2-a]pyrimidin-7-ones (IV) and 2H-pyrimido-[2,1-b]benzothiazol-2-ones (V). Treatment of some of these with primary and secondary aliphatic amines yielded 2-(β-aminoacryloyl)imino-Δ4-thiazolines (X) and the corresponding benzo-analogues (XI).
D. W. Dunwell and D. Evans, J. Chem. Soc. C, 1971, 2094 DOI: 10.1039/J39710002094
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