Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States.
Org Lett. 2011 Nov 18;13(22):6122-5. doi: 10.1021/ol2026125. Epub 2011 Oct 27.
The synthesis of N-aryl-2-carboxyl-3-hydroxy-5-arylpyrroles has been achieved in high yield by the combination of a TBSO-substituted vinyldiazoacetate and nitrones in a one-pot cascade process involving copper-catalyzed Mannich addition, dirhodium-catalyzed dinitrogen extrusion and N-OTBS insertion, and acid-promoted aromatization (elimination).
通过 TBSO 取代的乙烯基重氮乙酸酯和硝酮的一锅级联反应,实现了 N-芳基-2-羧基-3-羟基-5-芳基吡咯的高产合成,该反应涉及铜催化的曼尼希加成、二钌催化的氮气消除和 N-OTBS 插入以及酸促进的芳构化(消除)。