2230-89-9Relevant articles and documents
Acidic ionic liquid immobilized on nanoporous Na+-montmorillonite as an efficient and reusable catalyst for the formylation of amines and alcohols
Shirini, Farhad,Mazloumi, Masoumeh,Seddighi, Mohadeseh
, p. 1759 - 1776 (2016/03/16)
In this work, nanoporous sodium montmorillonite clay (Na+-MMT) was used as a support for the immobilization of 1-methyl-3-(trimethoxysilylpropyl)-imidazolium hydrogen sulfate. The Na+-MMT chemical modification ([Na+-MMT-[pmim]HSO4) was confirmed by a variety of techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy and potentiometric titration. The catalytic performance of this immobilized acidic ionic liquid was probed for the N-formylation of a variety of amines using formic acid under solvent-free conditions. This reagent is also useful for the formylation of benzylic alcohols. The procedure gave the products in excellent yields in very short reaction times. Also, this catalyst can be reused ten times without loss of its catalytic activity.
Silica sulfuric acid and AI(HSO4)3: As efficient catalysts for the formylation of alcohols by using ethyl formate under heterogeneous conditions
Zolfigol, Mohammad Ali,Chehardoli, Gholamabbas,Dehghanian, Mina,Niknam, Khodabakhsh,Shirini, Farhad,Khoramabadi-Zad, Ahmad
experimental part, p. 885 - 889 (2009/12/04)
A mixture of ethyl formate and a catalytic amount of silica sulfuric acid or Al(HSO4)3 as suitable formylating systems can formylate various alcohols to their corresponding formate ester derivatives under mild, nearly neutral and heterogeneous conditions at room temperature with good to excellent yields.
Conversion of trimethylsilyl ethers to acetyl or formyl esters with TiCl4
Iranpoor, Nasser,Zeynizadeh, Behzad
, p. 2123 - 2128 (2007/10/03)
A simple method is described for the efficient conversion of trimethylsilyl ethers to their corresponding acetyl and formyl esters in refluxing ethyl acetate or ethyl formate in the presence of TiCl4.