Synthesis, structure, and catalytic activity of new aluminum complexes formed with sterically bulky ligands
作者:K. V. Zaitsev、E. A. Kuchuk、B. N. Mankaev、A. V. Churakov、G. S. Zaitseva、D. A. Lemenovskii、S. S. Karlov
DOI:10.1007/s11172-014-0790-5
日期:2014.12
A reaction of pyridine related ligands containing two hydroxyalkyl groups, 2,6-(HO-Z-CH2)2C5H3N (Z is 1,1-cyclohexylene, 2,2-adamantylene) with trimethylaluminum and trimethoxyaluminum leads to three new aluminum complexes with the Me-Al or MeO-Al bond: 2,6-C5H3N(CH2-Z-O)2Al-X (Z is 1,1-cyclohexylene, X = Me (5), OMe (6); Z is 2,2-adamantylene, X = Me (7)). The structures of new derivatives were confirmed by NMR spectroscopy and elemental analysis. The structure of complex 5 was studied by X-ray diffraction analysis. Complex 5 is a dimer in the solid state due to the formation of a four-membered ring...Al-O...Al-O.... Complexes 5 and 6 were studied as initiators of the ring-opening polymerization of ε-caprolactone.
含有两个羟基烷基基团的吡啶相关配体2,6-(HO-Z-CH2)2C5H3N(Z为1,1-环己二烯基、2,2-金刚烷二烯基)与三甲基铝和三甲氧基铝反应,产生了三个新的铝配合物,具有Me-Al或MeO-Al键:2,6-C5H3N(CH2-Z-O)2Al-X(Z为1,1-环己二烯基,X = Me(5),OMe(6);Z为2,2-金刚烷二烯基,X = Me(7))。新衍生物的结构通过NMR光谱和元素分析得到证实。配合物5的结构通过X射线衍射分析进行了研究。配合物5在固态下是二聚体,由于形成了四元环...Al-O...Al-O...。配合物5和6作为ε-己内酯开环聚合的引发剂进行了研究。