Palladium(II)/Copper Halide/Solvent Combination for Selective Intramolecular Domino Reactions of Indolecarboxylic Acid Allylamides: An Unprecedented Arylation/Esterification Sequence
作者:Gianluigi Broggini、Vincenzina Barbera、Egle M. Beccalli、Elena Borsini、Simona Galli、Giuseppe Lanza、Gaetano Zecchi
DOI:10.1002/adsc.201100614
日期:2012.1
Intramolecular oxidative palladium‐catalyzed reactions of indolylallylamides in the presence of the couple bis(acetonitrile) palladium dichloride and copper(II) halide are described. Starting from 2‐ and 3‐indolylallylamides and involving in both cases the C‐3 position of the indole nucleus, variously substituted β‐carbolinones were obtained by arylation/halogenation, arylation/esterification or a
Uncommon intramolecular palladium-catalyzed cyclization of indole derivatives
作者:Egle M. Beccalli、Gianluigi Broggini
DOI:10.1016/s0040-4039(03)00116-3
日期:2003.2
A novel synthetic strategy based on the intramolecularpalladium-catalyzed oxidative cyclization reaction, allows the formation of C–C bond and the synthesis of β-carbolinones. The reaction has been performed in the presence of catalytic amount of PdCl2(CH3CN)2 and benzoquinone as a reoxidant.
We report a new air‐stable PdI dimer, [Pd(μ‐I)(PCy2tBu)]2, which triggers E‐selective olefin migration to enamides and styrene derivatives in the presence of multiple functional groups and with complete tolerance of air. The same dimer also triggers extremely rapidC−Ccoupling (alkylation and arylation) at roomtemperature in a modular and triply selective fashion of aromatic C−Br, C−OTf/OFs, and
我们报告了一种新的空气稳定的Pd I二聚体[Pd(μI)(PCy 2 t Bu)] 2,它在存在多个官能团且具有完全耐受性的情况下触发E-选择性烯烃向酰胺和苯乙烯衍生物的迁移空气 同一二聚体还可以在室温下以模块化和三重选择性的方式在聚(假)卤代芳烃中以芳族C-Br,C-OTf / OF和C-Cl键的形式快速触发C-C偶联(烷基化和芳基化)在具有邻位C-OTf的取代基的底物上显示出比以前的Pd I二聚体更好的活性。
Regioselectivity on the Palladium-Catalyzed Intramolecular Cyclization of Indole Derivatives
作者:Giorgio Abbiati、Egle M. Beccalli、Gianluigi Broggini、Caterina Zoni
DOI:10.1021/jo034636v
日期:2003.10.1
Indole 2-carboxamide derivatives 4 underwent palladium-catalyzedintramolecularcyclization reactions to afford beta-carbolinones or pyrazino[1,2-a]indoles according to different reaction pathways. The complete regioselectivity of the reactions was obtained in different reaction conditions.