Friedel–Crafts reactions catalyzed by samarium diiodide
作者:Mohamad Soueidan、Jacqueline Collin、Richard Gil
DOI:10.1016/j.tetlet.2006.05.169
日期:2006.7
Samariumdiiodide is an efficient precatalyst for the Friedel–Crafts reaction involving various aromatic substrates and chelating electrophiles. Alkyl 3,3,3-trifluoropyruvates are transformed into α-hydroxyesters in good yields with total regioselectivity. In reactions involving an ethyl glyoxylate or a glyoxylic imine, α-hydroxyesters or α-aminoesters are obtained with variable amounts of products
Poly(di(pyridin‐2‐yl)methyl acrylate) (PDPyMA), which was obtained by the free radicalpolymerization of designed coordinative monomer of di(pyridin‐2‐yl)methyl acrylate, is able to coordinate with various metal ions to form heterogeneous catalysts for diverse catalytic reactions. The Pd and Cu complexes supported by PDPyMA were developed for the heterogeneous Suzuki‐Miyaura reaction and Friedel‐Crafts
Enantioselective Friedel−Crafts Alkylation Reactions Catalyzed by a Chiral Nonracemic <i>C</i><sub>2</sub>-Symmetric 2,2‘-Bipyridyl Copper(II) Complex
作者:Michael P. A. Lyle、Neil D. Draper、Peter D. Wilson
DOI:10.1021/ol050075d
日期:2005.3.1
EnantioselectiveFriedel-Craftsalkylation reactions of a series of substituted indoles with methyl trifluoropyruvate, catalyzed by a chiral nonracemic C(2)-symmetric 2,2'-bipyridyl copper(II) triflate complex, are described. The corresponding 3,3,3-trifluoro-2-hydroxy-2-indole-3-yl-propionic acid methyl esters were formed in good yield and in high enantiomeric excess (up to 90%). This is the first
Cs2CO3-catalyzed alkylation of indoles with trifluoromethyl ketones
作者:Xiao-Dong Liu、Yi Wang、Hai-Yan Ma、Chun-Hui Xing、Yu Yuan、Long Lu
DOI:10.1016/j.tet.2017.03.012
日期:2017.4
A Cs2CO3-catalyzed alkylation reaction of indoles with trifluoromethyl ketones was presented. Both alicyclic and aromatic trifluoromethyl ketones as well as various substituted indoles are compatible with the methodology. Good to excellent yields of the corresponding trifluoromethyl substituted tertiary alcohols 2,2,2-tritrifluoro-1-(1H-indol-3-yl)-ethan-1-ols were acquired as the sole products.
提出了Cs 2 CO 3催化的吲哚与三氟甲基酮的烷基化反应。脂环族和芳族三氟甲基酮以及各种取代的吲哚都与该方法相容。作为唯一产物,获得了相应的三氟甲基取代的叔醇2,2,2-三三氟-1-(1H-吲哚-3-基)-乙烷-1-醇的良好至优异的产率。