Site-selective 1,3-double functionalization of arenes using <i>para</i>-quinol, C–N, and C–C/C–P three-component coupling
作者:Saddam Husen、Anil Chauhan、Ravindra Kumar
DOI:10.1039/c9gc04103f
日期:——
A catalytic and site-selective approach has been demonstrated for dual functionalization of arenes via cross-coupling reactions of p-quinols with amines and isocyanides/phosphites.
Accessing bridged bicyclic compounds or meta carbon-functionalized anilines from the dearomatization of anilines
作者:Linfei Wang、Shuo-En Wang、Weibin Wang、Renhua Fan
DOI:10.1039/c3ra23224g
日期:——
The oxidative dearomatization of anilines was combined with a domino Michael addition, providing a series of nitrogen-containing bridged bicyclic compounds in moderate to excellent yields. The bridged bicyclic compound could be converted into the corresponding meta carbon-functionalized aniline derivative via a quinine-catalyzed tandem retro-oxa-Michael addition–aromatization reaction.
Selective C3C3 Oxidative Cross-Coupling between Unactivated Anilines and Indoles
作者:Linfei Wang、Zhaomeng Han、Renhua Fan
DOI:10.1002/adsc.201000603
日期:2010.12.17
A selective C3C3 oxidativecross-couplingbetweenunactivatedanilines and indoles catalyzed by copper bromide together with iodobenzene diacetate as the oxidant is described. This methodology provides a novel approach to biaryl synthesis.
Substituted anilines containing a sulfonyl group may be oxidized in situ in the presence of methanol and a hypervalentiodinereagent to form an active iminium species. Subsequent addition of phosphines or phosphites in the same pot produces meta-substituted anilines in good yields. This formal C–H bond functionalization is a direct and efficient means of selectively substituting the meta-position
Stereoselective Synthesis of Acyclic Tetrasubstituted Alkenes from Anilines by Dearomatization and Trimethylenemethane Cycloaddition
作者:Lei Li、Qiuqin He、Renhua Fan
DOI:10.1021/acs.orglett.1c03974
日期:2022.1.14
A method for stereoselective construction of acyclic all-carbon tetrasubstituted alkenes through insertion of nitrile-substituted trimethylenemethane into the aryl C–N bond in anilines via an aromaticity destruction-reconstruction process is reported. The process involves dearomatization, azo-[3 + 2] TMM cycloaddition and aromatization-triggered rearrangement.