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This Letter describes a palladium-catalyzed cyclization of vinyl iodide-tethered allensulfonamide in the presence of alkylol, which provides a facile access to 2-alkoxy-3-methylene-tetrahydropyridine. The asymmetric version of this reaction has also been preliminarily realized with up to 81% enantioselectivity when chiral bisphosphine ligands were used.
This Letter describes the Pd(0)-catalyzed domino Heck–aza-Michael reaction between (Z)-N-(3-iodoallyl)-tosylamide and acrylic ester. The reaction provides a facile access to an important class of substituted 3-pyrroline.
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