Cobalt-Catalyzed Electrophilic Aminations with Anthranils: An Expedient Route to Condensed Quinolines
作者:Jie Li、Eric Tan、Niklas Keller、Yi-Hung Chen、Peter M. Zehetmaier、Andreas C. Jakowetz、Thomas Bein、Paul Knochel
DOI:10.1021/jacs.8b11466
日期:2019.1.9
The reaction of various organozinc pivalates with anthranils provides anilines derivatives, which cyclize under acidic conditions providing condensed quinolines. Using alkenylzinc pivalates, electron-rich arylzinc pivalates or heterocyclic zinc pivalates produces directly the condensed quinolines of which several structures belong to new heterocyclic scaffolds. These N-heterocycles are of particular
Copper‐catalyzed synthesis of
<i>N</i>
‐aryl acridones from 2‐amino benzophenones and aryl boronic acids via sequential double oxidative C–N coupling
作者:Yang He、Liang Xu、Jinli Zhang、Yu Wei
DOI:10.1002/aoc.5316
日期:2020.2
Pot‐economic synthesis of N‐aryl acridones was performed with 2‐aminobenzophenones and aryl boronic acids as starting materials. Cu‐catalyzed chelation‐assisted oxidative C–N cross‐coupling reactions were well merged with the following intra‐molecular oxidative dehydrogenative C–H amination reactions under an air atmosphere. The use of reagent capsules can further resolve the compatibility problem
Copper-catalyzed intramolecular direct amination of sp2 C–H bonds for the synthesis of N-aryl acridones
作者:Wang Zhou、Yong Liu、Youqing Yang、Guo-Jun Deng
DOI:10.1039/c2cc35425j
日期:——
A copper-catalyzed approach for the synthesis of N-arylacridones via sp(2) C-H bond amination using air as oxidant under neutral conditions is disclosed. This reaction not only provides a complementary method for synthesizing medicinally important acridones, but also offers a new strategy for sp(2) C-H bond amination.
Synthesis of <i>N</i>-Arylindazoles and Benzimidazoles from a Common Intermediate
作者:Brenda C. Wray、James P. Stambuli
DOI:10.1021/ol101899q
日期:2010.10.15
A variety of N-aryl-1H-indazoles and benzimidazoles were synthesized from common arylamino oximes in good to excellent yields The product selectivity depends upon the base used in the reaction, as triethylamine promoted the formation of benzimidazoles, whereas 2-aminopyridine promoted the formation of N-arylindazoles This method is valuable to the synthetic community because both indazoles and benzimidazoles are prevalent in pharmaceuticals
BAUM J. S.; CONDON M. E.; SHOOK D. A., J. ORG. CHEM., 52,(1987) N 14, 2983-2988