Novel molecular iodine catalyzed cyclization reactions of 2-amino anilines with aryl alkyl ketones under oxidant and metal-free conditions are described. The reaction likely involves sequential C–N bond formation followed by C(CO)–C(alkyl) bondcleavage. Various 2-substituted benzimidazoles are obtained in moderate to good yields in a single step from readily available acetophenones, propiophenones
Herein we report a first, palladium catalyzed, one-pot methodology for the synthesis of pharmacologically important benzimidazoles and benzothiazoles from readily available terminal aromatic olefins. The process involves sequential C=C/C-N bondcleavage followed by C−N/C−S bond formation.
在本文中,我们报道了一种由钯催化的单罐方法,该方法可从易于获得的末端芳族烯烃中合成具有药理学意义的重要苯并咪唑和苯并噻唑。该过程涉及顺序的C = C / CN键裂解,然后形成CN / CS键。
CuI nanoparticles mediated expeditious synthesis of 2-substituted benzimidazoles using molecular oxygen as the oxidant
作者:P. Linga Reddy、R. Arundhathi、Mohit Tripathi、Diwan S. Rawat
DOI:10.1039/c6ra11678g
日期:——
A general and easy method for the synthesis of several 2-substituted benzimidazoles from cyclization of o-diaminobenzenes and various aldehydes using CuI nanoparticles as a heterogeneous catalyst is described. Short reaction...