Alkylation of the α-amino C–H bonds of anilines photocatalyzed by a DMEDA-Cu-benzophenone complex: reaction scope and mechanistic studies
作者:Baptiste Abadie、Gediminas Jonusauskas、Nathan D. McClenaghan、Patrick Y. Toullec、Jean-Marc Vincent
DOI:10.1039/d1ob00960e
日期:——
complex 1 incorporating a BP chromophore is a highly active and chemoselective photocatalyst for the alkylation of α-amino C–H bonds of anilines. The reaction was shown to proceed with a broad substrate scope in the absence of additives. Extensive mechanisticstudies were performed, in particular using transient absorption spectroscopy, and spectroscopic signatures of key intermediates were identified
含有 BP 发色团的 Cu( II )配合物1是一种高活性和化学选择性的光催化剂,用于苯胺的 α-氨基 C-H 键的烷基化。该反应显示在没有添加剂的情况下以广泛的底物范围进行。进行了广泛的机理研究,特别是使用瞬态吸收光谱,并在催化条件下确定了关键中间体的光谱特征。最后,通过一锅法进行多组分 CuAAC 和烯烃加氢烷基化反应,展示了1作为多任务催化剂的能力。
The Coupling of Tertiary Amines with Acrylate Derivatives via Visible-Light Photoredox Catalysis
作者:Xiaojun Dai、Dongping Cheng、Baochuan Guan、Wenjuan Mao、Xiaoliang Xu、Xiaonian Li
DOI:10.1021/jo501097b
日期:2014.8.1
Catalyzed by Ru(bpy)3(BF4)2, the photoredox coupling of tertiary amines with acrylate derivatives including Baylis–Hillman adducts under visible light irradiation was successfully established. The scope of the substrates was broad, and thus an array of γ-aminobutyric ester derivatives was obtained in moderate to good yields.