V. López-Carrillo, A. M. Echavarren
J. Am. Chem. Soc. 2010, 132, 9292-9294
Abstract: The gold(I)-catalyzed intermolecular reaction of terminal alkynes with alkenes leads to cyclobutenes. The use of sterically hindered cationic Au(I) complexes as catalysts is key for the success of this reaction.