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Synthesis of tricyclic isoindoles and thiazolo[3,2-c][1,3]benzoxazines
Pinho e Melo, Teresa M. V. D.; Santos, Catarina I. A.; Rocha Gonsalves, António M. dA.; Paixão, José A.; Beja, Ana M.The thermolysis of (3R,9bS)-5-oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acids in Ac2O led to novel 3-methylene-2,5-dioxo-3H,9bH-oxazolo[2,3-a]isoindoles and chiral (9bS)-5-oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindoles were obtained on FVP. Starting from -cysteine methyl ester (3R,10bR)-5-oxo-2,3-dihydro-10bH-[1.3]thiazolo[3,2-c][1,3]benzoxazines were obtained as single stereoisomers. The t...
Synthesis of novel tricyclic isoindole derivatives
Melo, Teresa M. V. D. Pinho e; Santos, Catarina I. A.; Gonsalves, António M. d'A. Rocha; Paixão, José A.; Beja, Ana M.; Silva, Manuela RamosNovel 3-methylene-2,5-dioxo-3H,9bH-oxazolo[2,3-a]isoindoles were prepared from the thermolysis of (3R,9bS)-5-oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acids in acetic anhydride. The structure of 3-methylene-2,5-dioxo-3H,9bH-oxazolo[2,3-a]isoindole 6a was determined by X-ray crystallography. ; http://www.sciencedirect.com/science/article/B6THS-49PXCD9-X/1/45bd0f04f44115a1e7b644d727569da1
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