多么一对!据报道,分子内 C(sp 3 ) N 偶联可提供氮杂环。该反应通过用碘氧化苄型 C,N-二价阴离子进行,并建立在合成天然产物 lyconadin A 期间的早期发现的基础上。目前的研究使用具有较低酸性 C H 键和较低活性氮亲核试剂的构象无偏底物. ZnCl 2被确定为一种重要的添加剂。
Ligand-Controlled Para-Selective C–H Arylation of Monosubstituted Arenes
摘要:
In a Pd-catalyzed double C-H activation reaction, a pyridine-type ligand is identified, for the first time, to enable a highly para-selective C-H arylation of monosubstituted arenes. Excellent para-selectivity is achieved with a variety of arenes containing alkyl, methoxyl, and halo substituents.