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- W2952517043 abstract "Abstract An efficient new route to the benzo[ b ]xanthone system has been developed and applied to the synthesis of several new derivatives. The cycloaddition reactions of chromone-3-carboxaldehydes 12 , reacting as dienophiles, with ortho -benzoquinodimethane 7 gave a diastereomeric mixture of cycloadducts 8 and 9 . The formation of these compounds results from the Diels–Alder reactions of 12 and 7 followed by the in situ deformylation. The oxidation of adducts 8 and 9 with dimethyl sulfoxide in the presence of iodine gave the novel benzo[ b ]xanthones 11 in good yields." @default.
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- W2952517043 date "2010-05-21" @default.
- W2952517043 modified "2023-09-24" @default.
- W2952517043 title "ChemInform Abstract: Diels-Alder Reactions of Chromone-3-carboxaldehydes with ortho-Benzoquinodimethane. New Synthesis of Benzo[b]xanthones." @default.
- W2952517043 cites W2100045661 @default.
- W2952517043 doi "https://doi.org/10.1002/chin.200224149" @default.
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