Synthesis of hydroxylated oligoarene-type phosphines by a repetitive two-step method
作者:Shunpei Ishikawa、Kei Manabe
DOI:10.1016/j.tet.2009.10.101
日期:2010.1
oligoarene-type phosphines with various substitution patterns were synthesized. Such phosphines have potential as ligands for transition metal-catalyzed reactions. A successful route, which includes a repetitive Suzuki–Miyaura coupling–triflation sequence, reduction, and salt formation, was established starting from 2-bromophenyldicyclohexylphosphine oxide. Other key aspects of the method are the use of
合成了具有各种取代方式的羟基化的低聚芳烃型膦。此类膦具有作为过渡金属催化反应的配体的潜力。从2-溴苯基二环己基氧化膦开始,建立了一条成功的途径,其中包括重复的铃木-宫浦偶合-tri化顺序,还原和成盐。该方法的其他关键方面是使用合适的三氟甲磺酸盐试剂和形成膦作为HBF 4盐。通过仔细分析分馏和还原步骤中的副产物获得了有趣的信息,并提出了其形成机理。