CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
Dalton Trans. 2013 Mar 21;42(11):3860-8. doi: 10.1039/c2dt32520a. Epub 2013 Jan 14.
Two series of ligand precursors 2-OH-3-(CH(2)NR(2))-5-MeC(6)H(2)CH(2) (1: NR(2) = NMe(2); 2: NR(2) = N(CH(2))(4); 3: NR(2) = N(CH(2))(5); 4: NR(2) = N(Me)Ph) and 2-OH-3-(CH=NR)-5-MeC(6)H(2)CH(2) (10: R = 2,6-Pr(2)(i)C(6)H(3); 11: R = p-MeC(6)H(4); 12: R = p-ClC(6)H(4); 13: R = p-MeOC(6)H(4); 14: R = Bu(t)) were prepared. These compounds reacted with AlMe(3) to afford corresponding dinuclear aluminum complexes AlMe(2){2-O-3-(CH(2)NR(2))-5-MeC(6)H(2)}CH(2) (6: NR(2) = NMe(2); 7: NR(2) = N(CH(2))(4); 8: NR(2) = N(CH(2))(5); 9: NR(2) = N(Me)Ph) and AlMe(2){2-O-3-(CH=NR)-5-MeC(6)H(2)}CH(2) (15: R = 2,6-Pr(2)(i)C(6)H(3); 16: R = p-MeC(6)H(4); 17: R = p-ClC(6)H(4); 18: R = p-MeOC(6)H(4); 19: R = Bu(t)). All the compounds were characterized by (1)H and (13)C 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.
合成了两个系列的配体前体2-OH-3-(CH(2)NR(2))-5-MeC(6)H(2)CH(2)（1：NR(2)=NMe(2)；2：NR(2)=N(CH(2))(4)；3：NR(2)=N(CH(2))(5)；4：NR(2)=N(Me)Ph)和2-OH-3-(CH=NR)-5-MeC(6)H(2)CH(2)（10：R=2,6-Pr(2)(i)C(6)H(3)；11：R=p-MeC(6)H(4)；12：R=p-ClC(6)H(4)；13：R=p-MeOC(6)H(4)；14：R=Bu(t)）。这些化合物与 AlMe(3)反应得到相应的双核铝配合物AlMe(2){2-O-3-(CH(2)NR(2))-5-MeC(6)H(2)}CH(2)（6：NR(2)=NMe(2)；7：NR(2)=N(CH(2))(4)；8：NR(2)=N(CH(2))(5)；9：NR(2)=N(Me)Ph)和AlMe(2){2-O-3-(CH=NR)-5-MeC(6)H(2)}CH(2)（15：R=2,6-Pr(2)(i)C(6)H(3)；16：R=p-MeC(6)H(4)；17：R=p-ClC(6)H(4)；18：R=p-MeOC(6)H(4)；19：R=Bu(t)）。所有化合物均通过(1)H和(13)C NMR 光谱和元素分析进行了表征。配合物 6 和 16 还通过单晶 X 射线衍射技术进行了表征。评估了铝配合物在苯甲醇存在下对丙交酯开环聚合的催化作用。所有聚合反应均以可控方式进行。
