Ni-Catalyzed Reductive Cyanation of Aryl Halides and Phenol Derivatives via Transnitrilation
作者:L. Reginald Mills、Joshua M. Graham、Purvish Patel、Sophie A. L. Rousseaux
DOI:10.1021/jacs.9b11208
日期:2019.12.11
reductive coupling for the synthesis of benzonitriles from aryl (pseudo)halides and an electrophilic cyanating reagent, 2-methyl-2-phenyl malononitrile (MPMN). MPMN is a bench-stable, carbon-bound electrophilic CN reagent that does not release cyanide under the reaction conditions. A variety of medicinally relevant benzonitriles can be made in good yields. Addition of NaBr to the reaction mixture allows for
Brønsted Acid-Catalyzed Reaction of <i>N</i>-arylnaphthalen-2-amines with Quinone Esters for the Construction of Carbazole and C–N Axially Chiral Carbazole Derivatives
作者:Mingliang Zhang、Pin Zhao、Dongqing Wu、Zhichao Qiu、Chenyue Zhao、Wenyu Zhang、Feng Li、Jing Zhou、Lantao Liu
DOI:10.1021/acs.joc.2c02518
日期:2023.3.3
efficient synthetic method of carbazole derivatives from readily available N-arylnaphthalen-2-amines and quinone esters catalyzed by Brønsted acid. With this strategy, a series of carbazole derivatives were obtained in good to excellent yields (76 to >99) under mild conditions. Large scale reaction illustrated the synthetic utility of this protocol. Meanwhile, a series of C–N axially chiral carbazole derivatives
Detosylative (Deutero)alkylation of Indoles and Phenols with (Deutero)alkoxides
作者:Ming-Hui Zhu、Cheng-Long Yu、Ya-Lan Feng、Muhammad Usman、Dayou Zhong、Xin Wang、Nasri Nesnas、Wen-Bo Liu
DOI:10.1021/acs.orglett.9b02639
日期:2019.9.6
An efficient strategy for N/O-(deutero)alkylation of indoles and phenols with alkoxides/alcohols as the alkylation reagents is described. The consecutive detosylation/alkylation transformations feature mild reaction conditions, high ipso-selectivity, and good functional group tolerance (>50 examples). A one-pot selective N-alkylation of unprotected indoles with alcohols and TsCl is also realized. The