New dehydration in the pyrrolo[1,2–6-b]isoquinoline series. Preparation and structural identification of 3,5-dihydrobenz[f]indolizin-3-one |
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| Authors: | Benoí t Rigo,Etienne Tullier,Didier Barbry,Daniel Couturier,Vincent Warin,Jocelyne Lamiot,Fran ois Baert |
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| Affiliation: | Benoít Rigo,Etienne Tullier,Didier Barbry,Daniel Couturier,Vincent Warin,Jocelyne Lamiot,François Baert |
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| Abstract: | 3,5-Dihydrobenz[f]indolizin-3-one was prepared by a novel dehydration reaction involving the heating of 1,2,3,5,10,10a-hexahydro[f]indolizine-3,10-dione with polyphosphoric acid. The structure of this new compound was established by X-ray crystallography, by nmr spectroscopy and by reduction to the known products 1,2,3,5-tetrahydrobenz[f]indolizin-3-one and 1,2,3,5,10,10a-hexahydrobenz[f]indolizin-3-one. |
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