title: Activation of alkynes by an α-diimine-stabilized Al-Al-bonded compound: insertion into the Al-Al bond or cycloaddition to AlN2C2 rings.
abstract: The reaction of dialumane, [L(2-)(THF)Al(II)-Al(II)(THF)L(2-)] (1, L = [(2,6-iPr2C6H3)NC(Me)]2), with the less reactive diphenylacetylene affords a new insertion product [L(2-)(THF)Al(III)(PhC=CPh)(2-)Al(III)(THF)L(2-)] (2). Reaction of 1 with phenylacetylene (or 4-ethynyltoluene), however, proceeds through cycloaddition of alkynes to the AlN2C2 rings to produce bis(bicyclic) products (3a and 3b).
authors.affiliation: State Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, CAS, Lanzhou 730000, China.
authors.forename: Yanxia
authors.initials: Y
authors.lastname: Zhao
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Liu
authors.forename: Yibo
authors.initials: Y
authors.lastname: Lei
authors.forename: Biao
authors.initials: B
authors.lastname: Wu
authors.forename: Xiao-Juan
authors.initials: XJ
authors.lastname: Yang
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry*; D001643:Bridged Bicyclo Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D003500:Cyclization; D007097:Imines / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D000480:Alkynes; D001643:Bridged Bicyclo Compounds; D007097:Imines; D009942:Organometallic Compounds; D000535:Aluminum