Synthesis of di-, tri- and tetracyclopropylhydrazines
作者:Aleksandr N. Shestakov、Mikhail A. Kuznetsov
DOI:10.1039/c5cc07477k
日期:——
Previously unknown 1,1-dicyclopropylhydrazine was obtained in two steps starting from dicyclopropylamine. It serves as a starting material to tri- and tetracyclopropylhydrazines, which have not been described in the literature either.
Synthesis of N-Substituted Indole-3-carboxylic Acid Derivatives via Cu(I)-Catalyzed Intramolecular Amination of Aryl Bromides
作者:Ferdinand S. Melkonyan、Alexander V. Karchava、Marina A. Yurovskaya
DOI:10.1021/jo800630v
日期:2008.6.1
A variety of N-alkylated and N-arylated derivatives of methyl 1H-indole-3-carboxylate were synthesized efficiently via Ullmann-type intramolecular arylamination, using the CuI−K3PO4−DMF system. This catalytic amination procedure can be performed with good to high yields under mild conditions under an air atmosphere.
使用CuI-K 3 PO 4 -DMF系统,通过Ullmann型分子内芳基化反应,可以高效合成1 H-吲哚-3-羧酸甲酯的各种N-烷基化和N-芳基化衍生物。该催化胺化过程可以在温和的条件下在空气气氛下以良好至高的产率进行。
A Practical Synthesis of Indoles via a Pd-Catalyzed C–N Ring Formation
作者:Rishi G. Vaswani、Brian K. Albrecht、James E. Audia、Alexandre Côté、Les A. Dakin、Martin Duplessis、Victor S. Gehling、Jean-Christophe Harmange、Michael C. Hewitt、Yves Leblanc、Christopher G. Nasveschuk、Alexander M. Taylor
DOI:10.1021/ol5018118
日期:2014.8.15
A method for the synthesis of N-functionalized C2-/C3-substituted indoles via Pd-catalyzed C–N bond coupling of halo-aryl enamines is described. The general strategy utilizes a variety of amines and β-keto esters which are elaborated into halo-aryl enamines as latent precursors to indoles. The preferred conditions comprising the RuPhos precatalyst and RuPhos in the presence of NaOMe in 1,4-dioxane