Muñoz M Teresa, Cuenca Tomás, Mosquera Marta E G
Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain.
Dalton Trans. 2014 Oct 14;43(38):14377-85. doi: 10.1039/c4dt00952e.
A series of heterometallic aluminium-alkali metal species [AlMMe2{2,6-(MeO)2C6H3O}2]n have been isolated for lithium, sodium and potassium. These compounds can be generated by the reaction of [AlMe2{2,6-(MeO)2C6H3O}]2 with the metallated phenol [M{2,6-(MeO)2C6H3O}]n or through the reaction of the mixture of AlMe3 and the appropriate alkali metal alkyl base with two equivalents of 2,6-dimethoxyphenol. In the heterometallic species obtained, the {AlMe2{2,6-(MeO)2C6H3O}2}(-) moiety is observed and could be described as a claw which fixes the alkali ion by the phenoxide oxygen atoms while the methoxy groups help to stabilize their coordination sphere. All compounds have been characterized by NMR spectroscopy and X-ray diffraction methods. Catalytic studies reveal that these compounds are active in ring-opening polymerization of L-lactide.
已分离出一系列锂、钠和钾的异金属铝 - 碱金属物种[AlMMe2{2,6-(MeO)2C6H3O}2]n。这些化合物可通过[AlMe2{2,6-(MeO)2C6H3O}]2与金属化苯酚[M{2,6-(MeO)2C6H3O}]n反应生成，或通过AlMe3与适当的碱金属烷基碱的混合物与两当量的2,6 - 二甲氧基苯酚反应生成。在所得到的异金属物种中，观察到{AlMe2{2,6-(MeO)2C6H3O}2}(-)部分，它可被描述为一个爪子，通过酚氧基氧原子固定碱离子，而甲氧基有助于稳定其配位球。所有化合物均通过核磁共振光谱和X射线衍射方法进行了表征。催化研究表明，这些化合物在L - 丙交酯的开环聚合中具有活性。
