Butyl metal aryloxides, arylamides, and sulphur and phosphorus analogues—II. Synthesis and characterization of novel bulky alkoxides and aryloxides of aluminium; X-ray structure of [Al(μ-OCH2Ar)Me2]2 (Ar = C6H2Bu3t-2,4,6)
作者:Bekir Cetinkaya、Peter B. Hitchcock、Hatam A. Jasim、Michael F. Lappert、Hugh D. Williams
DOI:10.1016/s0277-5387(00)80575-6
日期:1990.1
6-di(t-butyl) phenoxo]methylaluminium, AlMe(OAr′)2 (Ar′= C6H3Bu2t-2,6), (2). The less hindered phenol Ar″OH (Ar″ = C6H3Bu2t-2,4) and an excess of AlMe3 gave the expected aryloxide, (2,4-di-t-butylphenoxo)dimethylaluminium, AlMe2(OAr″) (Ar″ = C6H3Bu2t-2,4) (3). Compounds 1-3 have been characterized spectroscopically and in the case of the crystalline alkoxide 1, also by X-ray crystallography; some selected
醇盐,(2,4,6-三-叔butylbenzoxo)dimethylaluminium,[铝(μ-OCH 2 AR)-Me 2 ] 2(AR = C 6 H ^ 2卜3吨-2,4,6-), (1)是由相应的苯甲醇ArCH 2 OH和三甲基铝在C 6 H 14中在约25℃下制备的。即使使用过量的醇,在这些条件下,AlMe 3的甲基之一也只能被取代。相反,使用大体积的酚Ar'OH(Ar'= C 6 H 3 Bu 2 t -2,6)和过量的AlMe 3得到双芳基氧化物,双-[2,6-二(叔丁基)苯氧]甲基铝,AlMe(OAr')2(Ar'= C 6 H 3 Bu 2 t -2,6),(2)。受阻较少的苯酚Ar“ OH(Ar” = C 6 H 3 Bu 2 t -2,4)和过量的AlMe 3得到预期的芳氧基,(2,4-二叔丁基苯氧基)二甲基铝,AlMe 2( OAr″)(Ar″ = C 6 H 3