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A synthetic method to prepare bicyclo[6.3.0]undeca‐2,4,9,trienyl esters efficiently from gold(I)‐catalyzed Rautenstrauch rearrangement/1,5‐hydride shift/8‐endo‐dig cyclization of 1‐ene‐4,10‐diynyl esters is described. The suggested double cycloisomerization mechanism delineates the first example of an unactivated all‐carbon tethered 1,7‐enyne, either preformed or formed in situ, which undergoes an...
Gold und Indole: Die Titelreaktion verläuft vermutlich über ein Vinyl‐Gold‐Intermediat, das in situ durch Einwirkung von AuCl/AgOTf entsteht. Unter den Reaktionsbedingungen werden Inden‐anellierte und 2,3‐disubstituierte Indolderivate in Ausbeuten bis 94 % erhalten (siehe Schema).
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