Synthesis of 4,7-Indolequinones by Photoinduced Reaction of Azidoquinones
摘要:
Various azidoquinones were prepared from methyl 3-substituted 2,3-dihydro-5-hydroxy-6-methylbenzofuran-2-carboxylate. Irradiation of these azidoquinones gave methyl 3-substituted 6-methyl-4,7-dioxoindole-2-carboxylates, a model of mitomycin analogs, in a moderate yield.
PHOTO-INDUCED REACTION OF ALKYLATED 1,4-TOLUQUINONE CARRYING ESTER GROUP IN THE ALKYL SIDE CHAIN
作者:Kazuhiro Maruyama、Tadashi Kozuka
DOI:10.1246/cl.1980.341
日期:1980.3.5
Irradiation of several 1,4-toluquinones 1a–d having functionalized side chain rapidly gave bicyclic phenolic compounds 2a–d in good yields via intramolecular hydrogen abstraction-proton transfer-cyclization. In the case of 1f, however, it was found that intramolecular rearrangement occurred concomitantly.