An efficient visible-light-mediated organocatalyzed N–H heteroarylation was accomplished via remote heteroaryl ipso-migration.
通过远程杂芳基ipso-迁移实现了一种高效的可见光介导的有机催化N–H杂芳基化反应。
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
A convenient and efficient Cu(OAc)(2)-mediated N-heteroannulation reaction of [60]fullerene with N-sulfonylated o-amino-aromatic methyl ketones or O-alkyl oximes has been reported for the synthesis of novel and scarce [60]fullerene-fused tetrahydroazepinones and -azepinonimines in a highly, selective manner. Moreover, a possible mechanism involving two pathways is proposed on the basis of the experimental observations.
C- to N-Center Remote Heteroaryl Migration via Electrochemical Initiation of N Radical by Organic Catalyst
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.