An unexpected rhodium-catalyzed regioselective C–H chlorination of 7-azaindoles was developed using 1,2-dichloroethane (DCE) as a chlorinating agent and 7-azaindole as the directing group. This protocol provides an efficient access to ortho-chlorinated azaindoles with operational simplicity, good functional group tolerance, and a wide substrate scope.
A novel one-pot synthesis of π-conjugated polycyclic compounds, which could undergo further facile transformation to form complex polycyclic heteroarene compounds, has been realized between 7-azaindoles and α,β-unsaturated ketones. This distinctive cascade process proceeds via a rhodium(III)-catalyzed alkylation/copper-catalyzed radical annulation–aromatization pathway.
Cu(II)-Catalyzed C–N, C–O, C–Cl, C–S, and C–Se Bond Formation via C(sp<sup>2</sup>)–H Activation Using 7-Azaindole as an Intrinsic Directing Group
作者:Mohit Kumar、Raziullah、Ashfaq Ahmad、Himangsu Sekhar Dutta、Afsar Ali Khan、Anushka Rastogi、Ruchir Kant、Dipankar Koley
DOI:10.1021/acs.joc.1c01811
日期:2021.11.5
partner, the reaction follows either disproportionation or radical pathways to complete the catalytic cycle. The synthetic utility of the developed protocol has been demonstrated via various functional group transformations.
Iridium-catalyzed C–H phosphoramidation of <i>N</i>-aryl-7-azaindoles with phosphoryl azides
作者:Changduo Pan、Yun Wang、Chao Wu、Jin-Tao Yu
DOI:10.1039/c8ob00776d
日期:——
An iridium-catalyzed C–H phosphoramidation of N-aryl-7-azaindoles with phosphoryl azides was developed, affording a series of 7-azaindole phenylphosphoramidates in moderate to good yields. This protocol displays good functional group tolerance, which offers a novel and direct approach to access 7-azaindole phenylphosphoramidates.