Synthesis and characterization of aluminum complexes of 2-pyrazol-1-yl-ethenolate ligands
作者:Zhong-Xia Wang、Die Yang
DOI:10.1016/j.jorganchem.2005.05.049
日期:2005.9
yielded N,O -chelate alkylaluminum complexes [R21AlOC(Ph)CH(3,5-R2C3HN2)-1}] (2a, R = R1 = Me; 2b, R = But, R1 = Me; 2c, R = Me, R1 = Et). Compound 1a was readily lithiated with LiBun in thf or toluene to give lithiated species 3. Treatment of 3 with 0.5 equiv of MeAlCl2 or AlCl3 yielded five-coordinated aluminum complexes [XAl(OC(Ph)CH(3,5-Me2C3HN2)-1})2] (4, X = Me; 5, X = Cl). Reaction of 5 with
描述了一些带有二齿2-吡唑-1-基-乙烯酸酯配体的新型铝配合物的合成和表征。2-(3,5-二取代的吡唑-1-基)-1-苯基乙酮,1-PhC(O)CH 2 -3,5-R 2 C 3 HN 2(1a,R = Me; 1b,R = Bu t)是通过3,5-二甲基吡唑或3,5-二叔丁基吡唑与PhC(O)CH 2 Br的无溶剂反应制备的。的反应1A或1B与AlR31 (R 1 =甲基,乙基),得到Ñ,ö -螯合物烷基铝配合物[R21AlOC(Ph)CH (3,5-R2C3HN2)-1}] (2a,R = R 1 = Me; 2b,R = Bu t,R 1 = Me; 2c,R = Me, R 1 = Et)。化合物1a中被容易地与锂化礼部Ñ在THF或甲苯,得到锂化物种3。治疗3与0.5当量MeAlCl的2或的AlCl 3产生五配位铝配合物[XAL(OC(PH)CH (3,5--ME 2