BOP efficiently promoted the phosphonium-mediated cyclization of thioureas, leading to a convenient synthesis of 2-aminobenzimidazoles. Compared to conventional methods, the reactions were complete at room temperature with times ranging from a few minutes to 1 h in near quantitative yields. This method is also applicable to the synthesis of more challenging structures such as 2-akylaminobenzimidazoles
antiparasitic activity against Plasmodium falciparum (P. falciparum) and Trypanosomabruceirhodesiense (T.b. rhodesiense) were evaluated in vitro. Some of the dicationic compounds (10,12,14) showed equal or very close activity against T.b. rhodesiense with melarsoprol and also showed promising activity against P. falciparum as compared to chloroquine. Among the monocationic derivatives compound 21 exhibited
Copper-Promoted One-Pot Approach: Synthesis of Benzimidazoles
作者:S. N. Murthy Boddapati、Ramana Tamminana、Ravi Kumar Gollapudi、Sharmila Nurbasha、Mohamed E. Assal、Osamah Alduhaish、Mohammed Rafiq H. Siddiqui、Hari Babu Bollikolla、Syed Farooq Adil
DOI:10.3390/molecules25081788
日期:——
first time on a copper catalyst promoted domino C–N cross-coupling reaction for the generation of 2-arylaminobenzimidazoles. Mechanistic investigations revealed that the synthetic pathway involves a copper-based desulphurization/nucleophilicsubstitution and a subsequent domino intra and intermolecular C–N cross-coupling reactions. Some of the issues typically encountered during the synthesis of 2