Copper(II)-catalyzed decarboxylative cyclization for accessing biologically relevant 3-(2-furanyl) Indoles via 3-cyanoacetyl indoles and cinnamic acids
作者:Abhishek Kumar、Sarita Katiyar、Ruchir Kant、Koneni V. Sashidhara
DOI:10.1016/j.tet.2020.131433
日期:2020.9
synthesis of 3-(2-furanyl) indoles from the readily available 3-cyanoacetyl indoles and α,β-unsaturated carboxylic acids via Cu(II)-catalyzed decarboxylative, intermolecular annulation is reported. In this transformation, di-tert-butyl peroxide was used as an external oxidant. This reaction undergoes radical addition, decarboxylative processes, and provides a facile regioselective 3-(2-furanyl) indole
报道了一种新颖且有效的途径,其通过Cu(II)催化的脱羧分子间环合反应从容易获得的3-氰基乙酰基吲哚和α,β-不饱和羧酸合成3-(2-呋喃基)吲哚。在该转化中,使用过氧化二叔丁基作为外部氧化剂。该反应经历自由基加成,脱羧过程,并以良好或优异的收率提供容易的区域选择性3-(2-呋喃基)吲哚衍生物。