Palladium-catalyzed Annulation of Oxygen-Substituted 1,3-Dienes

Synthesis and Reactivity of 2-Aminophenylpalladium(II) Complexes: Insertion Reactions of Oxygen and Carbon Monoxide into Carbon−Palladium Bonds—New Examples of “Transphobia”

“…2-Aminophenylpalladium complexes appear to be intermediates in the palladium-catalysed formation of nitrogencontaining heterocycles from o-iodo-or o-bromoanilines and, for example, alkynes, [14±17] dienes, [18] or vinyl cyclopropanes and cyclobutanes, [19] as well as in intramolecular cascade cyclizations.…”

Recent Uses of Palladium Chemistry in Indole Synthesis

“…Itahara and others [79][80][81][82][83][84][85][86] have reported the palladium-assisted synthesis of these indoles.The heteroannulation of N-tosyl-2-iodoaniline with a variety of oxygen substituted 1,3 dienes has been described by Larock and Guo [87].…”

Silver‐Catalyzed Asymmetric Synthesis of 2,3‐Dihydrobenzofurans: A New Chiral Synthesis of Pterocarpans

“…[32] This system has also been formed as minor byproducts of radical homoallylation, [33] insertion of a triple bond into a C À H bond of an olefin in arene-chromium tricarbonyl complexes, [34] and Pd-catalyzed annulation of O-substituted 1,3-dienes. [35] Asymmetric synthesis of trans-pterocarpin: The last stage was to check the applicability of the method to the asymmetric total synthesis of natural pterocarpans. Here, we describe the enantioselective total synthesis of (À)-trans-pterocarpin and its isomerization into the natural (À)-cis-pterocarpin.…”