An improved, versatile preparation of tr
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Wolfgang Oppolzer; Lothar Bieber; Eric Francotte
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Article
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1979
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Elsevier Science
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French
β 230 KB
Recent work in this laboratory has shown N-acylamino-1,3-butadienes (4) to be valuable components for intramolecular Diels-Alder reactions. Thus, heating the dienes 4, R2,R3 = 3-or 4-alkenyl, readily provides complex hydrogenated indolines and quinolines 2) as illustrated by the stereocontrolled