[EN] PROCESSES FOR PREPARING INDOLES<br/>[FR] PROCÉDÉS DE PRÉPARATION D'INDOLES
申请人:UNIV NANYANG TECH
公开号:WO2013095304A1
公开(公告)日:2013-06-27
Methods for the synthesis of an indole in provided. Methods comprise oxidizing a N-aryl imine in the presence of a palladium-based catalyst, an oxidant, and a solvent.
A rhodium(III)-catalyzed indole-directed arylC–H bond carbenoid insertion cascade of 2-arylindoles with diazo compounds has been developed. This method provides a rapid access to 1,2-benzocarbazoles and isoquinoline-based polycyclic heteroaromatics with a broad range of functional group tolerance. The primary evaluation of the photoluminescence property of the novel extended π-systems indicated that
Palladium-Catalyzed Direct C-2 Arylation of Indoles with Aryl Halides in Aqueous Medium
作者:Chun Cai、Guo-ping Lu
DOI:10.1055/s-0032-1317702
日期:——
A newly developed, efficient catalytic system for direct C2-arylation of indoles with aryl halides in aqueous medium under mild conditions (80 °C) is reported. These procedures are free of toxic solvents, and exhibit improved yields and high chemo- and regioselectivity.
Ruthenium-catalyzed tandem annulation/arylation for the synthesis of unsymmetrical bis(heteroaryl)methanes
作者:Sadhanendu Samanta、Alakananda Hajra
DOI:10.1039/c8ob01892h
日期:——
furan annulation/arylation strategy has been developed to afford unsymmetrical bis(heteroaryl)methanes by a reactionbetween propargyl amines and indoles. A series of bis(heteroaryl)methanes containing furan and indole as well as indole and imidazopyridine moieties have been synthesized in high yields. The reaction possibly proceeds through furan annulation followed by nucleophilic addition of indole
The reaction of 2-trimethylsilylmethylanilides and esters in basic medium provides a new general method for the synthesis of indoles. The advantages of this method are the mild reaction conditions (-10-0°C), the ready availability of the starting materials and the use of a non-nucleophilic base (lithium 2,2,6,6-tetramethylpiperidide) to promote cyclisation.