title: VO(salen)(X) catalysed asymmetric cyanohydrin synthesis: an unexpected influence of the nature of anion X on the catalytic activity.
abstract: The nature of the anionic ligand X (X = EtOSO3, BF4, Cl, Br, OSO2CF3, F or CN) in vanadium(V)salen complexes [V+ O(salen) X-] was found to have a significant influence on the catalytic activity of the complexes, but not on their enantioselectivities; with the complexes in which X = Cl or F being most active and the complex with X = OSO2CF3 being totally inactive.
authors.affiliation: A. N. Nesmeyanov Institute of Organo-Element Compounds, Russian Academy of Sciences, 119991, Moscow, Vavilov 28, Russian Federation. yubel@ineos.ac.ru
authors.forename: Yuri N
authors.initials: YN
authors.lastname: Belokon
authors.forename: Victor I
authors.initials: VI
authors.lastname: Maleev
authors.forename: Michael
authors.initials: M
authors.lastname: North
authors.forename: Dmitry L
authors.initials: DL
authors.lastname: Usanov
mesh_terms: D000838:Anions / Q000737:chemistry; D002384:Catalysis; D005029:Ethylenediamines / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D009570:Nitriles / Q000138:chemical synthesis* / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D013997:Time Factors; D014639:Vanadium / Q000737:chemistry*
chemical_list: D000838:Anions; D005029:Ethylenediamines; D008024:Ligands; D009570:Nitriles; D009942:Organometallic Compounds; C430593:cyanohydrin; D014639:Vanadium; C011452:disalicylaldehyde ethylenediamine