The organocatalyticaerobicoxidation of electron‐deficient α‐fluoroalkylalcohols at roomtemperature is described. The resulting fluoroalkylketones are versatile synthetic intermediates for a variety of fluorine‐containing molecules. This otherwise difficult transformation has now been accomplished by the reaction of α‐fluoroalkylalcohols with N‐oxyl radicals, catalytically generated from 9‐azabicyclo[3
Preparation of symmetrical and unsymmetrical monomers towards bridge trifluoromethylated poly(p-phenylenevinylene)
作者:Alex J. Roche、Anne D. Loyle、Jean-Pierre Pinto
DOI:10.1016/j.jfluchem.2004.05.004
日期:2004.10
series of trifluoromethylated and bis(trifluoromethylated) precursors and monomers for bridge substituted trifluoromethylated poly(p-phenylenevinylene) (PPV) is reported. These monomers were prepared in several steps from terephthaldicarboxaldehyde and they contain symmetrical and unsymmetrical combinations of leaving groups and/or polarizers, including chlorides, sulfoxides, sulphones, tosylates and S-methyl
A nickelcatalyzed synthesis of α-aryl-α-trifluoromethyl alcohols B is presented that exploits the condensation of iodoarenes and the redox active ether A via cross-electrophile coupling. A mechanistic study was conducted using a comprehensive computational investigation that was also supported by ad hoc control experiments and showed that the key 1,2-HAT (Hydrogen Atom Transfer) event results in the
提出了一种镍催化合成 α-芳基-α-三氟甲醇B的方法,该方法利用碘芳烃和氧化还原活性醚A通过交叉亲电子偶联进行缩合。使用综合计算研究进行了机械研究,该研究也得到了特别控制实验的支持,结果表明关键的 1,2-HAT(氢原子转移)事件导致形成以 C 为中心的自由基C' ,该自由基模仿了三氟乙醛的反应活性。