作者:Benjamin A. Haag、Zhi-Guang Zhang、Jin-Shan Li、Paul Knochel
DOI:10.1002/anie.201005319
日期:2010.12.3
Updated classic: Primary and secondary alkylzinc reagents add to various aryldiazonium salts leading regioselectively to polyfunctional indoles by means of a [3,3]‐sigmatropic shift and subsequent aromatization. This organometallic variation of the Fischer indolesynthesis tolerates a wide range of functional groups and displays absolute regioselectivity.
General rhodium-catalyzed oxidative cross-coupling reactions between anilines: synthesis of unsymmetrical 2,2′-diaminobiaryls
作者:Yang Shi、Jiahui Liu、Yudong Yang、Jingsong You
DOI:10.1039/c9cc01733j
日期:——
cross-coupling reactions. Furthermore, this Cp*-free catalytic reaction tolerates a range of functional groups and requires only a low molar ratio of coupling partners. These features expedite the synthesis of unsymmetrical2,2′-diaminobiaryls.
Oxidative C−H/C−H Cross-Coupling Reactions between <i>N</i>
-Acylanilines and Benzamides Enabled by a Cp*-Free RhCl<sub>3</sub>
/TFA Catalytic System
作者:Yang Shi、Luoqiang Zhang、Jingbo Lan、Min Zhang、Fulin Zhou、Wenlong Wei、Jingsong You
DOI:10.1002/anie.201804528
日期:2018.7.16
oxidative C−H/C−H cross‐coupling reaction between an N‐acylaniline and a benzamide has been accomplished for the first time. This process constitutes a step‐economic and highly efficient pathway to 2‐amino‐2′‐carboxybiaryl scaffolds from readily available substrates. A Cp*‐free RhCl3/TFA catalytic system was developed to replace the [Cp*RhCl2]2/AgSbF6 system generally used in oxidative C−H/C−H cross‐coupling
A unified strategy for silver-, base-, and oxidant-free direct arylation of C–H bonds
作者:Manoj K. Sahoo、Siba P. Midya、Vinod G. Landge、Ekambaram Balaraman
DOI:10.1039/c6gc03438a
日期:——
C–N2 bond cleavage. This unified strategy has been achieved by the synergistic combination of visible-light metal-free photoredox and palladiumcatalysis under silver-, base- and/or additive-free conditions. The broad substrate scope, functional group tolerance, excellent regioselectivity and redox-neutral conditions of this process make it attractive for the effective synthesis of a wide range of important
Highly Chemoselective Acylation of Substituted Aminophenols with 3-(Trimethylacetyl)-1,3-thiazolidine-2-thione
作者:Wei-Min Dai、Yuk King Cheung、Kit Wan Tang、Pui Yiu Choi、Suet Lam Chung
DOI:10.1016/0040-4020(95)00783-5
日期:1995.11
A general procedure for chemoselective acylation of substituted aminophenols has been developed. The N-acylated products 7 and 10a-h were prepared by treating the aminophenols with 3 (trimethylacetyl)-1,3-thiazolidine-2-thione (1) in refluxing THF in 70–100% yield. The esters 8 and 13d,b,j of 3- and 4-amino phenols could be obtained in 70–94% yield by treating with NaH and 1.