Direct Imidation to Construct 1<i>H</i>-Benzo[<i>d</i>]imidazole through Pd<sup>II</sup>-Catalyzed CH Activation Promoted by Thiourea
作者:Qing Xiao、Wen-Hua Wang、Gang Liu、Fan-Ke Meng、Jia-Hua Chen、Zhen Yang、Zhang-Jie Shi
DOI:10.1002/chem.200900154
日期:2009.7.27
method to construct 1H‐benzo[d]imidazole was developed by means of PdII‐catalyzed intramolecular CH activation starting from easily available N‐phenylbenzimidamide (see scheme). The detailed mechanism studies indicated that a palladacycle monomer or dimer is the key intermediate for this transformation and thiourea was used for the first time to promote the efficiency of CH activation.
通过Pd II催化的分子内CH活化作用,从容易获得的N -苯基苯甲酰胺开始(见方案),开发了一种新的直接构建1 H苯并[ d ]咪唑的方法。详细的机理研究表明,palladacycle单体或二聚体是该转化的关键中间体,硫脲首次用于提高CH活化效率。