First Allylpalladium Systems Containing Chiral Imidazolylpyridine Ligands – Structural Studies and Catalytic Behaviour
作者:Amaia Bastero、Antonio F. Bella、Fernando Fernández、Susanna Jansat、Carmen Claver、Montserrat Gómez、Guillermo Muller、Aurora Ruiz、Mercè Font‐Bardía、Xavier Solans
DOI:10.1002/ejic.200600682
日期:2007.1
ne (II), paying particular attention to the influence of the amine nitrogen hybridisation on their catalytic behaviour. Allylpalladium complexes 9–11 containing optically pure imidazolines were synthesised and fully characterised both in solution (NMR) and the solid state (single-crystal X-ray diffraction). NMR studies showed four species in solution for complex 9 containing the unsymmetrical 1-phenylallyl
钯/手性咪唑基吡啶体系在 rac-3-acetoxy-1,3-diphenyl-1-propene (rac-I) 和 3-acetoxy-1-phenyl-1-propene (II) 的烯丙基烷基化中进行了测试,特别注意胺氮杂化对其催化行为的影响。合成了含有光学纯咪唑啉的烯丙基钯配合物 9-11,并在溶液 (NMR) 和固态 (单晶 X 射线衍射) 中进行了充分表征。NMR 研究表明,溶液中含有不对称 1-苯基烯丙基基团的复合物 9 中有四种物质,而对于含有对称 1,3-二苯基烯丙基部分的复合物 10 和 11,鉴定出两种物质,内型和外型。在固态下,每个复合物仅结晶内向异构体。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)