Cationic gold(I) complexes efficiently catalyze the intramolecular allyl-allyl coupling of allyl acetates with allylstannanes with excellent stereoselectivity (see scheme). This reaction is mechanistically very different from that catalyzed by palladium.
![Gold-catalyzed allyl-allyl coupling](https://www.iciq.org/wp-content/uploads/2014/03/Gold-catalyzed-allyl-allyl_eng_noticies_articles_2008_27.gif)