title: Ring synthesis by stereoselective, methylene-free enyne cross metathesis.
abstract: Tandem enyne metathesis between 1-alkynes and 1,5-cyclooctadiene or all-cis-1,4-polybutadiene resulted in a direct, one-step ring synthesis of cyclohexadienes by methylene-free metathesis. The use of methylene-free metathesis conditions provided apparent Z-selectivity in the intermolecular enyne metathesis step.
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, USA.
authors.forename: Amol A
authors.initials: AA
authors.lastname: Kulkarni
authors.forename: Steven T
authors.initials: ST
authors.lastname: Diver
mesh_terms: D000466:Alkadienes / Q000138:chemical synthesis* / Q000737:chemistry; D000478:Alkylation; D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D003510:Cyclohexanes / Q000737:chemistry; D053138:Cyclohexenes; D034242:Cyclooctanes / Q000737:chemistry*; D006838:Hydrocarbons; D009682:Magnetic Resonance Spectroscopy; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry*; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D000466:Alkadienes; D000480:Alkynes; D003510:Cyclohexanes; D053138:Cyclohexenes; D034242:Cyclooctanes; D006838:Hydrocarbons; C048401:1,4-cyclohexadiene; C030011:carbene; D008697:Methane