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[摘要]：The preliminary results of a regiospecific synthesis of (Z)-1-(2-nitrobenzylidene)isochroman-3-ones by gold(I)-catalyzed cycloisomerization of phenylethynylacetic acids Under mild conditions is described. These novel lactones proved to be suitable starting materials for a new, general access to 5H-benzo[b]carbazole-6,11-diones. |
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