6)-tri-n-butylstannylpyridines, prepared from dibromopyridines and i-PrMgCl at room temperature, undergo Negishi coupling with either alkyl or arylzinc chlorides. The new alkyl- and aryl-substituted pyridylstannanes produced are shown to be suitable for further functionalization by Stille coupling. A group of new liquid crystalline materials with aromatic cores comprised of pyridine and thiophene rings were prepared
在室温下由二
溴吡啶和i- PrMgCl制备的2-
溴5(或6)-三正丁基
苯乙烯基
吡啶,与烷基或芳基
氯化锌进行Negishi偶联。所产生的新的烷基和芳基取代的
吡啶基
锡烷酸酯经显示适合通过Stille偶联进一步官能化。利用这些新的
吡啶基
锡烷作为主要中间体,制备了一组具有由
吡啶和
噻吩环组成的芳族核的新型液晶材料。