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A palladium-catalyzed cycloisomerisation reaction of 1,6-enyne acetic esters have been developed. This cyclization reaction shows excellent regioselectivity and good functional group tolerance to obtain five-membered nitrogenated heterocyclic conjugated trienes in moderate to excellent yields. The resulting conjugated trienes could be facilely converted to highly substituted benzenes through Diels-Alder...
An efficient green route for the synthesis of substituted dihydrofurans was developed through a simple base-catalyzed, tandem reaction of nitrostyrene with 1,3-dicarbonyl compounds. The desired products were prepared with a large substrate scope and in excellent yields (up to 95%).
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