Palladium-catalyzed arylation of vinylic acetates. Phosphine ligand influenced regioselectivity
作者:Mickaël Jean、Jacques Renault、Pierre van de Weghe
DOI:10.1016/j.tetlet.2009.09.048
日期:2009.11
A palladium-catalyzed coupling reaction of aryl bromides with vinylic acetates in the presence of tributyltin methoxide has been described. The α-arylation aldehyde product and the aryl ketone were obtained in the presence of P(t-Bu)3 and P(o-Tol)3, respectively.
Nuclear receptor ligands and ligand binding domains
申请人:Baxter D. John
公开号:US20070027215A1
公开(公告)日:2007-02-01
The present invention provides new methods, particularly computational methods, and compositions for the generation of nuclear receptor synthetic ligands based on the three dimensional structure of nuclear receptors, particularly the thyroid receptor (herein referred to as “TR”). Also provided are crystals, nuclear receptor synthetic ligands, and related methods.
Heck-type 5-endo-trig cyclizations promoted by vinylic fluorines: Ring-fluorinated indene and 3H-pyrrole syntheses from 1,1-difluoro-1-alkenes
作者:Junji Ichikawa、Kotaro Sakoda、Jun Mihara、Naotaka Ito
DOI:10.1016/j.jfluchem.2005.12.023
日期:2006.5
Arylpalladium or aminopalladium species bearing a 2,2-difluorovinyl group undergo an unusual 5-endo alkene insertion followed by beta-fluorine elimination. These processes provide a facile access to ring-fluorinated five-membered carbocyclic and heterocyclic compounds starting from an o-(3,3-difluoroallyl)phenyl trifluoromethanesulfonate and 3,3-difluoroallyl ketone O-pentafluorobenzoyloximes. In both systems, the two vinylic fluorine atoms are essential for Heck-type 5-endo-trig cyclizations. (C) 2006 Elsevier B.V All rights reserved.
Tiffeneau; Levy, Bulletin de la Societe Chimique de France, 1931, vol. <4> 49, p. 1661,1676
作者:Tiffeneau、Levy
DOI:——
日期:——
Tiffeneau; Levy; Weill, Bulletin de la Societe Chimique de France, 1931, vol. <4> 49, p. 1606,1614