title: Ruthenium-catalyzed homo Diels-Alder [2 + 2 + 2] cycloadditions of alkynyl phosphonates with bicyclo[2.2.1]hepta-2,5-diene.
abstract: Ruthenium-catalyzed homo Diels-Alder [2 + 2 + 2] cycloadditions between alkynyl phosphonates and bicyclo[2.2.1]hepta-2,5-diene were studied. The observed reactivity was found to be dependent on the presence of the phosphonate moiety. The Ru-catalyzed cycloaddition was compatible with a variety of aromatic and aliphatic substituted alkynyl phosphonates, providing the corresponding phosphonate substituted deltacyclenes in low to good yields (up to 88%).
authors: Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
authors: Tanner J
authors: TJ
authors: Kettles
authors: Neil
authors: N
authors: Cockburn
authors: William
authors: W
authors: Tam
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009636:Norbornanes / Q000737:chemistry*; D063065:Organophosphonates / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*
chemical_list: D000480:Alkynes; D009636:Norbornanes; D063065:Organophosphonates; D012428:Ruthenium; C048294:2,5-norbornadiene