Iron-Catalyzed Oxidative C−C and N−N Coupling of Diarylamines and Synthesis of Spiroacridines
作者:Raphael F. Fritsche、Gabriele Theumer、Olga Kataeva、Hans-Joachim Knölker
DOI:10.1002/anie.201610168
日期:2017.1.9
We describe iron‐catalyzed intermolecular oxidative coupling reactions of diarylamines to form substituted 2,2′‐bis(arylamino)biaryl compounds, tetraarylhydrazines, and 5,6‐dihydrobenzo[c]cinnolines with the same hexadecafluorinated iron–phthalocyanine catalyst. The mild formation of C−C or N−N bonds was controlled by the use of acidic or basic additives. In contrast to most iron‐catalyzed dehydrogenative
我们描述了铁催化的二芳基胺的分子间氧化偶联反应,用相同的十六氟化铁-酞菁催化剂形成取代的2,2'-双(芳基氨基)联芳基化合物,四芳基肼和5,6-二氢苯并[ c ]肉桂啉。通过使用酸性或碱性添加剂,可控制CC或N-N键的温和形成。与大多数铁催化的脱氢偶联反应相反,环境空气可以用作唯一的氧化剂。此外,六水合氯化铁(III)促进了单锅偶合,随后促进了分子内脱芳香性偶合,从而生成10 H-螺[[啶-9,1'-环己2',5'-dien-4'-one]。