Technical Notes:

1. A well-defined tungsten-based alkyne metathesis catalyst first prepared by Professor Richard Schrock. The catalyst has been eduneeter used to prepare a variety of products through alkyne metathesis, including natural products that contain large rings.

2. Catalyst for alkyne metathesis.

References : 1. Acc. Chem Res.. 1986. 19 342. (review article) 2.Angew Chem. Int. Ed.. 2000, 39, 3012. (review article) 3.J. Org. Chem. 2003, 68. 1521. 4.Angew. Chem.. Int. Ed.. 2010, 49, 7257.