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A new synthesis of furo[3,4-b]quinolin-3(1H)-one derivatives has been established in straightforward fashion in high overall yields. An efficient Hendrickson reagent-initiated cascade annulation, which is composed of mild conversion of the stable amide precursor to the reactive imido-carbonium intermediate and subsequent intramolecular aza Diels–Alder reaction, successfully serves as the key reaction...
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