Synthesis of 7-Substituted 5-Oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic Acids, 2-Substituted 4-Oxo-4H-pyrido [1,2-a]pyrimidine-3-carboxylic Acids, and 2,6-Disubstituted 4-Quinolones from Meldrum's Acid Derivatives
- 1 January 1989
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1989 (04) , 317-320
- https://doi.org/10.1055/s-1989-27241
Abstract
The title compounds are prepared from the Meldrum acid derivatives 5-[bis(methylthio)methylene]-, 5-(1-methylthioalkylidene)- and 5-(α-methylthiobenzylidene)-2,2-dimethyl-4,6-dioxo-1,3-dioxanes by reaction with 2-aminothiazole, 2-aminopyridine, or anilines, respectively.Keywords
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