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。