An iron‐catalyzed electrophilicamination of sodium sulfinates with anthranils to generate N‐(2‐carbonylaryl) benzenesulfonamides with high atom efficiency under redox‐neutral conditions has been developed.
Herein an exogenous oxidant- and metal-free electrochemical heteroaryl migration triggered by N radicals to construct new N-C bonds was developed. This methodology features a high atom economy and utilization rate of energy, and it is insensitive to water and air. Moreover, a user-friendly undivided cell was employed. The use of an organic catalyst makes it more efficient, green, and practical.
Manganese-Catalyzed <i>ortho</i>-C-H Amidation of Weakly Coordinating Aromatic Ketones
作者:Xianqiang Kong、Bo Xu
DOI:10.1021/acs.orglett.8b01770
日期:2018.8.3
An efficient manganese-catalyzed ortho-C-H amidation of weakly coordinating aromaticketones using the readily available sulfonyl azide as the amination reagent is developed. The key step is the ketone directed aromatic metalation using the in situ generated reactive Mn intermediate, MnMe(CO)5. This method offers excellent chemical yields, high regioselectivities, and good functional group tolerance