Free accessResearch articleFirst published online 2003-3
Addition reactions of Acetylenic Esters to 6,7-Dihydrobenzo[ B ]Furan-4(5 H )-One,6,7-Dihydroindol-4(5 H )-One,5,6-Dihydrobenzo[ B ]Furan-7(6 H )-One and 5,6-Dihydroindol-7(6 H )-One Ketoximes. Formation of Reduced Furo[ G ]- and Pyrrolo[ G ]-Indoles
Thermal rearrangement of 6,7-dihydrobenzo[b]furan-4(5H)-one and 4,5,6,7-tetrahydroindol-4-one 4(7)-O-(E)-(1,2-dimethoxycarbonylvinyl)ketoximes gave 4,5-dihydrofuro[2,3g]- and 4,5-dihydropyrrolo[2,3g]- and [3,2-g] indoles, three novel tricyclic systems
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