Efficient palladium-catalyzed synthesis of substituted indoles employing a new (silanyloxyphenyl)phosphine ligand
作者:Christopher B. Lavery、Robert McDonald、Mark Stradiotto
DOI:10.1039/c2cc33071g
日期:——
The new and easily prepared OTips-DalPhos ligand (L1) offers broad substrate scope at relatively low loadings in the palladium-catalyzed C-N cross-coupling/cyclization of o-alkynylhalo(hetero)arenes with primary amines, affording indoles and related heterocyclic derivatives in high yield.
[EN] SILANYLOXYARYL PHOSPHINE LIGAND AND USES THEREOF IN C-N CROSS-COUPLING<br/>[FR] LIGAND À LA SILANYLOXYARYLE PHOSPHINE ET SES UTILISATIONS DANS LE COUPLAGE CROISÉ C-N
申请人:UNIV DALHOUSIE
公开号:WO2013159229A1
公开(公告)日:2013-10-31
The present invention pertains to silanyloxyaryl phosphine ligands of formula (I) and their uses with transition metal catalyst precursors for organic synthesis reactions. More particularly, the present invention pertains to the use of silanyloxyaryl phosphine ligands and with transition metal catalyst precursors in C-N cross-coupling reactions.
Nickel-catalyzed, base-mediated amination/hydroamination reaction sequence for a modular synthesis of indoles
作者:Lutz Ackermann、Weifeng Song、René Sandmann
DOI:10.1016/j.jorganchem.2010.08.047
日期:2011.1
A catalytic system consisting of [Ni(cod)2] and ligand dppf enabled an efficient synthesis of differently substituted indoles through a modular reaction sequence, which consists of intermolecular aminations and intramolecular hydroaminations with ortho-alkynylhaloarenes.
Transition-Metal-Free Synthesis of 1,2-Disubstituted Indoles
作者:Gleb A. Chesnokov、Alexandra A. Ageshina、Maxim A. Topchiy、Mikhail S. Nechaev、Andrey F. Asachenko
DOI:10.1002/ejoc.201900772
日期:2019.8.15
A new robust transition‐metal‐free method for synthesis of 1,2‐disubstituted indoles from easily available tertiary amides is presented. This approach can be performed in a one‐pot two‐step manner directly from secondary amines. Mechanistic studies showed that acyl transfer might be an important step in the course of the reaction. Viability of the presented approach for benzofurans and benzothiophenes