(Au → B)8 interaction, Au(DPB)X3 (DPB = diphosphine-borane) featuring an L2/Z ligand was synthesized. The resulting cationic catalyst was utilized for the unprecedented diastereoselective tricyclization/dimerization of yne-indoles.
Gold-Catalyzed Intramolecular Dearomatization Reactions of Indoles for the Synthesis of Spiroindolenines and Spiroindolines
作者:Wen-Ting Wu、Lu Ding、Liming Zhang、Shu-Li You
DOI:10.1021/acs.orglett.9b03988
日期:2020.2.21
dearomatization reaction of indolederivatives was realized in the presence of JohnPhosAuCl/AgOMs to afford a series of spiroindolenines in excellent yields (≤99%). In addition, when the Hantzsch ester was used as the hydrogen transfer reagent, various spiroindolines were obtained in a cascade fashion starting from readily available indolederivatives in modest to good yields (≤79%). Both reactions feature
Gold-Catalyzed Intramolecular Reaction of Indoles with Alkynes: Facile Formation of Eight-Membered Rings and an Unexpected Allenylation
作者:Catalina Ferrer、Antonio M. Echavarren
DOI:10.1002/anie.200503484
日期:2006.2.6
Highly regioselective palladium/copper-catalysed cross-coupling reactions of terminal alkynes and allenes
作者:Didier Bruyere、Ronald Grigg、Joanne Hinsley、Ruksana K. Hussain、Stewart Korn、Cecilia Orgaz De La Cierva、Visuvanathar Sridharan、Jung Wang
DOI:10.1016/j.tetlet.2003.09.160
日期:2003.11
The Pd/Cu-catalysed cross-coupling reaction of heterocyclic terminal alkynes and allene/allenyl heterocycles affords novel trisubstituted en-ynes in good yield. (C) 2003 Elsevier Ltd. All rights reserved.
Intra- and Intermolecular Reactions of Indoles with Alkynes Catalyzed by Gold
作者:Catalina Ferrer、Catelijne H. M. Amijs、Antonio M. Echavarren
DOI:10.1002/chem.200601324
日期:2007.2.2
Indoles react intramolecularly with alkynes in the presence of gold catalysts to give fromsix- to eight-membered-ring annulated compounds. The cationic Au(I) complex [Au(PC(6)H(4)(o-Ph)}(tBu)(2))(NCMe)]SbF(6) is the best catalyst for the formation of six- and seven-membered rings by 6-endo-dig, 6-exo-dig, and 7-exo-dig cyclizations. Indoloazocines are selectively obtained with AuCl(3) as catalyst