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Synthesis 1996; 1996(4): 519-524
DOI: 10.1055/s-1996-4236
DOI: 10.1055/s-1996-4236
paper
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Synthesis and Reactivity of (3-Oxo-2,3-dihydro-1H-ylidene)acetic Acid Alkyl Esters in Diels-Alder Reactions
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
Aldolization reactions of 1-acetyl-1H-indol-3(2H)-one with glyoxal derivatives afforded (1-acetyl-3-oxo-2,3-dihydro-1H-indol-2-ylidene)acetic acid ester derivatives 2 and 3. Spiro compounds 6 were obtained by Diels-Alder reactions of 2; inverse electron demand Diels-Alder reactions of 2 afforded pyrano indoles 8.
glyoxal derivatives - aldolisation - 1H-indol-3(2H)-one - pyrrolo[2,3-b]pyridin-3-one - Diels-Alder reactions