Cascade Reactions of l,n-Enynes

5 Cascade Reactions of l,n-Enynes (n 6) With the C—C double bond tethered remotely to the C—C triple bond, direct reactions between these two n-systems are often supplanted by other more facile processes. Cascade reactions of these enynes often have the participation of the C—C double bond at later stages of the reactions. 

SCHEME 4.15 Gold-catalyzed cycloisomerization of propargyl indol-3-ylacetates. 

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