Effective Partial Alkynylation of Carboxylic Acid Derivatives to Alkynyl Ketones
作者:Sang-Jun Yim、Min-Hyeok Kim、Duk-Keun An
DOI:10.5012/bkcs.2010.31.02.286
日期:2010.2.20
The reaction of carboxylic acid derivatives such as esters, acid chlorides and acid anhydrides with alkynyl lithiums in the presence of lithium morpholinide and $BF_3\cdot}OEt_2$ gave alkynyl ketones in good yield (73-96%).
Well‐Dispersed Trifluoromethanesulfonic Acid‐Treated Metal Oxide Nanoparticles Immobilized on Nitrogen‐Doped Carbon as Catalysts for Friedel–Crafts Acylation
using acid‐treated metal oxides. The catalysts showed high activity for Friedel–Craftsacylation with low titanium loading (2 mol%, <1 mg of metal for 1 mmol of substrate). A range of microscopic, spectroscopic and physicochemical studies revealed that the nitrogen‐doped carbon immobilized the trifluoromethanesulfonic acid and that the addition of metals further changed the nature of the acidic species
[EN] CATALYSED CYCLOHEXANE OXIDATION<br/>[FR] OXYDATION DE CYCLOHEXANE CATALYSEE
申请人:DSM IP ASSETS BV
公开号:WO2010069870A1
公开(公告)日:2010-06-24
The invention is directed to a method for preparing a mixture comprising cyclohexanol and cyclohexanone. In accordance with the invention a mixture comprising cyclohexanol and cyclohexanone is prepared in a molar cyclohexanone/cyclohexanol ratio of at least 1.2 at a cyclohexane conversion of below 5 mol%. The method comprises oxidising cyclohexane in a liquid phase, said oxidising being catalysed by a cobalt compound and a chromium compound, wherein the atomic cobalt to chromium ratio is in the range of 0.05-0.8, wherein the sum of the concentrations of cobalt and chromium is 0.05-0.9 ppm by weight based on the total weight of the reaction mixture, and wherein the cobalt compound and chromium compound are dissolved in the liquid phase.
According to the present invention, there is provide a coated film that is excellent in surface hardness and abrasion resistance and has good adhesion between a polyester film and a hard coat layer. The present invention relates to a coated film comprising a polyester film and a coating layer formed on at least one surface of the polyester film, the coating layer being prepared from a coating solution comprising a (meth)acrylate compound, a reactive silica comprising a (meth)acryloyl group, and an isocyanate-based compound.