Suzuki-Miyaura cross-coupling reaction of monohalopyridines and l-aspartic acid derivative
作者:Ayame Mikagi、Dai Tokairin、Toyonobu Usuki
DOI:10.1016/j.tetlet.2018.11.038
日期:2018.12
cross-coupling reaction of halogenated pyridines and a borated l-aspartic acid derivative was conducted. The reactivity of chloro-, bromo-, and iodo-pyridines with substituents at the C2, C3, and C4 positions was investigated. Electron density of halogenated pyridines was also estimated by density functional theory (DFT) calculations. The order of experimental yield of halogen substituents was Br > I >> Cl
进行了卤代吡啶与硼酸化的1-天冬氨酸衍生物的Suzuki-Miyaura交叉偶联反应。研究了氯,溴和碘吡啶在C2,C3和C4位置具有取代基的反应性。卤代吡啶的电子密度也通过密度泛函理论(DFT)计算来估算。卤素取代基的实验产率顺序为:Br> I >> Cl,C3> C2,C4,而DFT结果表明反应顺序为:I >> Br,Cl和C4> C2,C3。优化的实验条件(3-溴吡啶)定量提供了偶联产物。