Imidoyl dichlorides as new reagents for the rapid formation of 2-aminobenzimidazoles and related azoles
作者:Julie A. Pollock、Sung Hoon Kim、John A. Katzenellenbogen
DOI:10.1016/j.tetlet.2015.09.076
日期:2015.10
yields. The ability to incorporate various protecting groups makes the imidoyl dichloride reagent amenable to a large number of syntheses. The reagent is applied to the total synthesis of the 2-aminobenzimidazole containing carcinogen, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), from 2-chloro-3-nitropyridine in >60% yield in 6 steps.
提出了在室温下有效合成五元和六元唑的试剂的开发。合成了多种取代的2-氨基苯并咪唑,收率良好至优异。掺入各种保护基的能力使亚氨酰二氯化物试剂适合于大量合成。该试剂可用于由> 60的2-氯-3-硝基吡啶全合成含2-氨基苯并咪唑的致癌物2-氨基-1-甲基-6-苯基咪唑并[4,5- b ]吡啶(PhIP) 6个步骤中的%收率。