its derivatives, were prepared as potential catalysts for the oligomerization of ethylene. The molecular structure of a representative complex C2·CH3CH2OH was determined by single-crystal X-ray diffraction. Upon treatment with diethylaluminium chloride (Et2AlCl), all nickel complex pre-catalysts exhibited good activities in the oligomerization of ethylene. Furthermore, in the presence of methylaluminoxane
制备了一系列镍配合物 LNiCl2 (C1-C16),其中 L 代表 2-苯并咪唑-8-烷基喹啉及其衍生物,作为乙烯低聚反应的潜在催化剂。代表性配合物 C2·CH3CH2OH 的分子结构由单晶 X 射线衍射确定。用二乙基氯化铝 (Et2AlCl) 处理后,所有镍配合物预催化剂在乙烯低聚反应中都表现出良好的活性。此外,在甲基铝氧烷 (MAO) 存在下,镍预催化剂适用于降冰片烯的乙烯基聚合。图形概要
Acid-catalyzed rearrangement of 3-(β-2-aminostyryl)quinoxalin-2(1H)ones—a new and efficient method for the synthesis of 2-benzimidazol-2-ylquinolines
作者:Vakhid A. Mamedov、Dina F. Saifina、Aidar T. Gubaidullin、Venera R. Ganieva、Saniya F. Kadyrova、Dimitry V. Rakov、Il’dar Kh. Rizvanov、Oleg G. Sinyashin
DOI:10.1016/j.tetlet.2010.10.007
日期:2010.12
A highly efficient, one-step, versatile method for the synthesis of 2-benzimidazol-2-ylquinolines has been developed on the basis of an acid-catalyzedrearrangement proceeding via a novel ring contraction of 3-(β-2-aminostyryl)quinoxalin-2(1H)ones.