Tungsten(0) alkylidene complexes stabilized as pyridinium ylides: new aspects of their synthesis and reactivity
作者:Henri Rudler、Thomas Durand-Réville
DOI:10.1016/s0022-328x(00)00727-0
日期:2001.1
The interaction of dihydropyridines with alkoxycarbene complexes of tungsten has been shown to lead to pyridinium ylid complexes: this transformation has now been applied to the synthesis of a hydroxyl-containing ylid complex by ring-opening of the pentacarbonyl (2-oxacyclopentylidene) tungsten(0) complex and to the synthesis of a series of chiral ylid complexes both from chiral and non-chiral carbene
二氢吡啶与钨的烷氧基卡宾配合物的相互作用已显示出吡啶基吡啶配合物:该转化现已应用于通过五羰基(2-氧杂环戊叉基)钨(0的开环)合成含羟基的吡啶配合物)并通过分别使用二氢吡啶和二苯并噻吩从手性和非手性卡宾配合物合成一系列手性碘配合物。这些配合物的亚烷基部分向亲核烯烃的转移将被概述和讨论。这些吡啶鎓碘化物络合物与不饱和底物(如二氢吡啶,烯胺和β-烷氧基双(三甲基甲硅烷基)乙烯酮缩醛)的相互作用尤其相关。后一反应生成共轭羧酸,