Copper-Catalyzed Synthesis of 2-Unsubstituted, N-Substituted Benzimidazoles
摘要:
An efficient copper-catalyzed intramolecular arylation of formamidines forming 2-unsubstituted benzimidazoles in excellent yields is reported. Sixteen examples bearing sterically demanding substituents on nitrogen like Mes, 2,6-diisopropylphenyl, or 2-tert-butylphenyl and tolerating various functional groups demonstrate the utility of this method.
Copper-Catalyzed Synthesis of 2-Unsubstituted, <i>N</i>-Substituted Benzimidazoles
作者:Keiichi Hirano、Akkattu T. Biju、Frank Glorius
DOI:10.1021/jo902160y
日期:2009.12.18
An efficient copper-catalyzed intramolecular arylation of formamidines forming 2-unsubstituted benzimidazoles in excellent yields is reported. Sixteen examples bearing sterically demanding substituents on nitrogen like Mes, 2,6-diisopropylphenyl, or 2-tert-butylphenyl and tolerating various functional groups demonstrate the utility of this method.