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Various hydroisoquinolines have been synthesized uia the Diels-Alder reactions of 5.6-dihydro-2-pyridinones with Danishefsky diene.Diels-Alder reaction in synthetic organic chemistry can not be overemphasized and recent applications to the synthesis of natural products have received much attention.1
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Nakagawa et al. (1990) studied this question.
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