An HFIP-assisted, cobalt-catalyzed three-component electrophilic C–H amination/cyclization/directing group removal cascade to naphtho[1,2-d]imidazoles
作者:Hasina Mamataj Begam、Kangkan Pradhan、Kasarla Varalaxmi、Ranjan Jana
DOI:10.1039/d3cc00749a
日期:——
A concise and efficient method has been developed herein for the synthesis of valuable naphtho[1,2-d]imidazole derivatives. It involves an earth-abundant cobalt-catalyzed electrophilic ortho C–H amination/cyclization/directing group removal cascade with O-benzoloxyamines using paraformaldehyde as a one carbon synthon. Picolinamide has been utilized as a traceless directing group. A boosting effect
本文开发了一种简洁有效的方法来合成有价值的萘并[1,2-d]咪唑衍生物。它涉及使用多聚甲醛作为单碳合成子的地球丰富的钴催化的亲电邻位C-H 胺化/环化/定向基团去除级联与O-苯甲氧基胺。吡啶甲酰胺已被用作无痕导向基团。在整个过程中发现了HFIP的促进作用。反应条件非常简单,易于操作,使该方法具有价值和吸引力。