Iron(II) Chloride–1,1′-Binaphthyl-2,2′-diamine (FeCl2–BINAM) Complex Catalyzed Domino Synthesis of Bisindolylmethanes from Indoles and Primary Alcohols
Biologically important bisindolylmethanes are synthesized in a domino fashion by using an iron(II) chloride-(+/-)-1,1-binaphthyl-2,2-diamine [FeCl2-(+/-)-BINAM] complex as the catalyst. This method proceeds via oxidation of a primary alcohol into the corresponding aldehyde followed by nucleophilic addition of an indole in the presence of the catalyst. A reaction intermediate is synthesized separately and converted into the bisindolylmethane product under the same reaction conditions as support for the proposed mechanism.
Exploration of Aberrant Behaviour of Grignard Reagents with Indole-3-carboxaldehyde: Application to the Synthesis of Turbomycin B and Vibrindole A Derivatives
作者:P. Ravikumar、A. Bahuguna、R. Sharma、P. Sagara
DOI:10.1055/s-0036-1588885
日期:——
Grignard reagents with N-alkylated indole-3-carboxaldehyde has been observed. Contrary to the usual formation of an alcohol, it afforded an unusual bis(indolyl)methane product. A systematic study on this new mode of reactivity and its application to a synthesis of the potent antibiotic turbomycin B and vibrindole A derivatives is reported.
已经观察到格氏试剂与 N-烷基化吲哚-3-甲醛发生异常反应。与通常的醇形成相反,它提供了一种不寻常的双(吲哚基)甲烷产物。报道了对这种新反应模式及其在强效抗生素 turbomycin B 和 vibrindole A 衍生物合成中的应用的系统研究。