Cu(<scp>i</scp>) catalysis for selective condensation/bicycloaromatization of two different arylalkynes: direct and general construction of functionalized C–N axial biaryl compounds
enantioselectivity verifies its potential for the simplest asymmetric synthesis of atropoisomeric biaryls. Western blotting demonstrated that the newly developed compounds are promising targets in biology and pharmaceuticals. This unique reaction can construct structurally diverse C–N axial biarylcompounds that have never been reported by other methods, and might be extended to various applications in materials
A one-pot synthesis of 2,2′-disubstituted diindolylmethanes (DIMs) via a sequential Sonogashira coupling and cycloisomerization/C3-functionalization of 2-iodoanilines
作者:Anirban Kayet、Vinod K. Singh
DOI:10.1039/c7ob01701d
日期:——
A Pd(II)-Ag(I) catalyzed highly efficient synthesis of diindolylmethane has been developed. This transformation consists of a one pot sequential Sonogashira coupling (and desilylation) followed by cycloisomerization/C3-functionalization of 2‑iodoanilines. Six new bonds (four C-C and two C-N) are formed in one pot fashion. A variety of diindolylmethanes were obtained in excellent yields (up to 94%)
Efficient synthesis of 3-substituted indoles through a domino gold(I) chloride catalyzed cycloisomerization/C3-functionalization of 2-(alkynyl)anilines
作者:C. Praveen、K. Karthikeyan、P.T. Perumal
DOI:10.1016/j.tet.2009.09.019
日期:2009.11
An efficient synthesis of 3-substituted indoles by a sequential approach involving gold(I) chloride catalyzed cycloisomerization/bis-addition and conjugate addition of 2-(alkynyl)anilines has been accomplished. A variety of 2-(alkynyl)anilines, aldehydes, isatins and nitroolefins undergo this overall process in good to excellent yields. This methodology represents an effective alternative to the classical
Enantioselective synthesis of indole derivatives by Rh/Pd relay catalysis and their anti-inflammatory evaluation
作者:Sifeng Li、Zihao Wang、Haitao Xiao、Zhaoxiang Bian、Jun (Joelle) Wang
DOI:10.1039/d0cc03158e
日期:——
An efficient Rh/Pd relay catalyzed intermolecular and cascade intramolecular hydroamination for the synthesis of exclusive trans 1-indolyl dihydronaphthalenols (up to 88% yield, 99% ee) is described under mild conditions.
An efficient synthesis of diketopiperazinoindolines through an indium-catalyzed intramolecular 5-exo-dig cyclization of ortho-alkynyl diketopiperazines has been reported. The formation of diketopiperazinoindolines proceeds via a regio- and diastereoselective Conia-ene reaction. This synthetic method opens a new door for easy access to functionalized fused diketopiperazinoindolines in high to excellent