Ferrocenyl (P,N)-diphosphines incorporating pyrrolyl, imidazolyl or benzazaphospholyl moieties: Synthesis, coordination to group 10 metals and performances in palladium-catalyzed arylation reactions
作者:Fatima Allouch、Nikolay V. Vologdin、Hélène Cattey、Nadine Pirio、Daoud Naoufal、Ali Kanj、Radomyr V. Smaliy、Aleksandr Savateev、Anatoly Marchenko、Anastasia Hurieva、Heorgii Koidan、Aleksandr N. Kostyuk、Jean-Cyrille Hierso
DOI:10.1016/j.jorganchem.2013.03.025
日期:2013.7
Three novel symmetrical ferrocenyl diphosphines with tertiary phosphorus atoms holding respectively nitrogen-containing heterocyclic derivatives of pyrrole, imidazole and benzazaphosphole were synthesized and characterized. Up to now, integration of heteroaromatic fragments, or more generally hetero-cycles, as substituents on the tertiary phosphines of symmetrical ferrocenyl diphosphines has been limited
合成并表征了三种新型的具有叔磷原子的对称的二茂铁基二膦,分别具有吡咯,咪唑和苯并氮杂氮的含氮杂环衍生物。迄今为止,作为对称二茂铁基二膦的叔膦上的取代基的杂芳族片段或更普遍的杂环的整合已经限于呋喃基基序。举例说明了它们与钯和铂族10过渡金属的配位,并使用单晶X射线衍射进行了分析。在钯催化的无铜的Sonogashira和铃木使用bromoarenes和氯代芳烃的交叉偶联反应得到的性能进行了报道的最有效的系统。一个的空前组合叔丁基和磷原子上的咪唑基基序导致形成空气稳定的二茂铁基二膦,使其与0.1-0.2 mol%的钯结合生成催化体系,该体系能够偶合一些活化的氯代芳烃和所检测的大多数溴代芳烃。