Abstract
Herein, we describe a high yielding and switchable synthesis of a range of functionalized pyridines and pyrroles via Cu-catalyzed cascade reactions with alkynes and N-sulfonyl azadienes which are readily available from saccharin. Both unsymmetrical 2,4,6-trisubstituted pyridines and multi-substituted pyrroles could be transformed into some bioactive compounds and chiral ligands.
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