catalyst was developed. Such a peri‐position of two alkynyl substituents has not been
studied in gold catalysis before. Dependent on the substrate, the reactions either follow a
mechanism involving vinyl cation intermediates or involve a dual gold catalysis mechanism
which in an initial 6‐endo‐dig‐cyclization generates gold (I) vinylidene intermediates that
are able to insert into C− H bonds. Indenophenalene derivatives were obtained in moderate …