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2005
Fused pyridine derivatives
R 0450
First Hetero-Diels—Alder Reaction with Indoloquinone in the Presence of Hydroand Palladium. — The stepwise synthesis of piperidino-indoloquinones via het26- 087 gen
ero-Diels—Alder reaction of indoloquinone (I) with azadienes and subsequent hydrogenation is cumbersome due to decomposition of the Diels—Alder adducts. Thus direct
one-pot hetero-Diels—Alder reaction/catalytic hydrogenation is investigated giving
good yields of the hydrogenated cycloadducts. — (GENTILI, J.; BARRET*, R.;
Tetrahedron Lett. 46 (2005) 10, 1639-1641; Lab. Chim. Ther., Fac. Pharm., Univ.
Claude Bernard, F-69373 Lyon, Fr.; Eng.) — Mais
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