Bulky 1,1′‐Ferrocenyl Ligands Featuring Diazaphospholene or Dioxaphosphepine Donor Fragments: Catalytic Screening in Nickel‐Catalyzed C‐N Cross‐Coupling
作者:Ryan. T. McGuire、Jillian S. K. Clark、Alexandre V. Gatien、M. Yue Shen、Michael J. Ferguson、Mark Stradiotto
DOI:10.1002/ejic.201900972
日期:2019.10.17
or diazaphospholene (L2) donor moieties have been prepared, crystallographically characterized, and tested in representative nickel‐catalyzed C–N cross‐coupling reactions. Ligand L1 proved competent in cross‐couplings involving primary/secondary alkylamine or indole nucleophiles with (hetero)aryl chlorides, with the catalytic performance of rac and meso‐L1 differing in the case of some substrate pairings
已经制备了具有大体积二氧杂磷平(L1)或二氮杂磷烯(L2)供体基团的1,1'-二茂铁基配体,进行了晶体学表征,并在代表性的镍催化的C-N交叉偶联反应中进行了测试。事实证明,配体L1在涉及伯/仲烷基胺或吲哚亲核试剂与(杂)芳基氯化物的交叉偶联中胜任,在某些底物配对的情况下,rac和meso - L1的催化性能有所不同。相反,L2在类似条件下被证明是无效的。