255378-18-8Relevant academic research and scientific papers
Syntheses of complexes containing substituted 4-ethynylquinolines or 1-azabuta-1,3-dienes by addition of imines to a cationic butatrienylidene-ruthenium complex
Bruce, Michael I.,Ke, Mingzhe,Kelly, Brian D.,Low, Paul J.,Smith, Mark E.,Skelton, Brian W.,White, Allan H.
, p. 184 - 201 (2007/10/03)
Reactions of [Ru(=C=C=C=CH2)(PR3)2Cp]+ (R=Ph or OMe) with arylimines ArN=CH(C6H4R) afford either substituted quinolines, Ru{CCC9H4RN(Ar)}(PR3)2Cp, by attack of the terminal carbon of the butatrienylidene ligand at the imine carbon, followed by C-C bond formation between the ortho carbon of the N-aryl group and Cγ of the unsaturated carbene, or 1-azabuta-1,3-dienyl complexes, formed by cycloaddition of the N=CH group to Cγ=Cδ of the carbene, followed by opening of the resulting four-membered ring. Some product dependence on the nature of the substituents in the N- and C-aryl groups is found. The N atoms in the products are strongly basic, being readily protonated, methylated or aurated. The molecular structures of nine complexes are reported, together with that of a new modification of RuCl{P(OMe)3}2Cp.
Cycloaddition of aromatic imines to a ruthenium butatrienylidene complex: Synthesis of 4-ethynylquinoline and 1-azabuta-1,3-diene complexes
Bruce, Michael I.,Hinterding, Peter,Ke, Mingzhe,Low, Paul J.,Skelton, Brian W.,White, Allan H.
, p. 715 - 716 (2007/10/03)
Reactions of aromatic imines with the putative butatrienylidene-ruthenium cation [Ru(C=C=C=CH2)(PPh3)2-(η-C 5H5)]+ gives complexes containing either 4-ethynylquinoline or 1-azabuta-1,3-diene ligands; the molecular structures of [Ru(C≡CC9H4MeN)(PPh3) 2(η-C5H5)] and [Ru{C≡CC(CH=CHPh)=N(C6H4NO2-3)}(PPh 3)2(η-C5H5)] are reported.
