100030-60-2Relevant academic research and scientific papers
Dinuclear aluminum complexes supported by amino- or imino-phenolate ligands: Synthesis, structures, and ring-opening polymerization catalysis of rac-lactide
Yu, Xiao-Feng,Wang, Zhong-Xia
, p. 3860 - 3868 (2013/04/10)
Two series of ligand precursors [2-OH-3-(CH2NR 2)-5-MeC6H2]2CH2 (1: NR2 = NMe2; 2: NR2 = N(CH2) 4; 3: NR2 = N(CH2)5; 4: NR 2 = N(Me)Ph) and [2-OH-3-(CHNR)-5-MeC6H2] 2CH2 (10: R = 2,6-Pri2C6H3; 11: R = p-MeC6H4; 12: R = p-ClC6H4; 13: R = p-MeOC6H4; 14: R = But) were prepared. These compounds reacted with AlMe3 to afford corresponding dinuclear aluminum complexes [AlMe2{2-O-3-(CH2NR2)-5- MeC6H2}]2CH2 (6: NR2 = NMe2; 7: NR2 = N(CH2)4; 8: NR 2 = N(CH2)5; 9: NR2 = N(Me)Ph) and [AlMe2{2-O-3-(CHNR)-5-MeC6H2}] 2CH2 (15: R = 2,6-Pri2C6H3; 16: R = p-MeC6H4; 17: R = p-ClC6H4; 18: R = p-MeOC6H4; 19: R = But). All the compounds were characterized by 1H and 13C NMR spectroscopy and elemental analyses. Complexes 6 and 16 were additionally characterized by single crystal X-ray diffraction techniques. Catalysis of the aluminum complexes towards the ring-opening polymerization of rac-lactide was evaluated in the presence of benzyl alcohol. All the polymerization reactions proceed in a controlled manner.
