Efficient solution phase synthesis of 2-(N-acyl)-aminobenzimidazoles
作者:Punit P. Seth、Dale E. Robinson、Elizabeth A. Jefferson、Eric E. Swayze
DOI:10.1016/s0040-4039(02)01754-9
日期:2002.10
imidazole ring system was assembled using SNAr reactions, nitro group reduction, acylthiourea formation and cyclization with EDC. The acyl protected 2-aminobenzimidazole derivatives were obtained in high yield and purity without purification of intermediates or final products. This reaction sequence eliminates the use of highly toxic cyanogenbromide, a reagent commonly used to prepare the 2-aminobenzimidazole