Gold(I)-catalysed addition of electron-rich arenes and heteroarenes to 1,6-enynes gives two different types of products by reaction of the intermediate cyclopropyl gold carbenes at the cyclopropane or at the carbene.
![Gold(I)-catalysed arylation of 1,6-enynes: different site reactivity of cyclopropyl gold carbenes](https://www.iciq.org/wp-content/uploads/2014/03/GoldI-catalysed-arylation_eng_noticies_articles_2007_21.gif)
Gold(I)-catalysed addition of electron-rich arenes and heteroarenes to 1,6-enynes gives two different types of products by reaction of the intermediate cyclopropyl gold carbenes at the cyclopropane or at the carbene.