科研之友
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摘要
Three-component aza-Diels-Alder reactions involving aromatic aldehydes, aromatic amines, and dihydropyran or dihydrofuran are effectively catalyzed by samarium diiodide to afford pyrano[3,2-c]- or furano[3,2-c]quinolines in good yields and with high stereo selectivities. Either the cis or the trans isomers can be obtained as the major products by conveniently controlling reaction conditions.
