title: Enyne metathesis for the formation of macrocyclic 1,3-dienes.
abstract: Macrocyclic 1,3-dienes of a variety of ring sizes are formed in good yield via enyne metathesis. Both endo- and exo-products are observed depending on the size of the macrocycle. In general, 10-membered rings and smaller give exo-products, while 12-membered rings and larger give endo-products. The endo/exo selectivity and the E/Z ratio of the diene products can be further controlled by the presence of ethylene in the reaction.
authors.affiliation: Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA.
authors.forename: Eric C
authors.initials: EC
authors.lastname: Hansen
authors.forename: Daesung
authors.initials: D
authors.lastname: Lee
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D003500:Cyclization; D003516:Cycloparaffins / Q000138:chemical synthesis* / Q000737:chemistry; D006571:Heterocyclic Compounds / Q000138:chemical synthesis*
chemical_list: D000480:Alkynes; D003516:Cycloparaffins; D006571:Heterocyclic Compounds