Beilstein J. Org. Chem.2011,7, 156–166, doi:10.3762/bjoc.7.22
metathesis [4][5][6][7][8][9][10]. It is noteworthy that polymerization of terminal alkynes [11][12][13] and cyclotrimerization of triynes [14][15][16][17][18][19][20] with ruthenium carbene precursors is still a topic of current interest. Then, Fischer tungsten carbene complexes were used by Katz [21], and
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Graphical Abstract
Scheme 1:
Interaction of triple bonds with a metal carbene.