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Synthesis 2009(10): 1615-1622
DOI: 10.1055/s-0028-1088051
DOI: 10.1055/s-0028-1088051
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Regioselective Synthesis of 5H-Thiazolo[3,2-a]pyrimidin-5-ones from Morita-Baylis-Hillman Adduct Acetates under Solvent-Free and Base-Free Conditions
Weitere Informationen
Publikationsverlauf
Received
2 December 2008
Publikationsdatum:
20. April 2009 (online)


Abstract
5H-Thiazolo[3,2-a]pyrimidin-5-ones were easily prepared in good to excellent yields with high regioselectivity by nucleophilic addition of thiazol-2-amines to Morita-Baylis-Hillman adduct acetates, followed by cyclization and a thermo-sigmatropic shift procedure under solvent-free and base-free conditions.
Key words
fused-ring systems - heterocycles - α,β-unsaturated esters - thiazol-2-amines - solvent-free - base-free