Phosphine Gold(I) Bis-(trifluoromethanesulfonyl)imidate Complexes as New Highly Efficient and Air-Stable Catalysts for the Cycloisomerization of Enynes

A study concerning the synthesis of new phosphine gold(I) complexes using the bis(trifluoromethanesulfonyl)imidate moiety as a weakly
coordinating counteranion is described. These new air-stable complexes are more convenient to prepare, store, and handle and are exceedingly
active for the catalysis of a wide range of enynes cycloisomerizations.