Aza-Michael-type addition reaction catalysed by a supported ionic liquid phase incorporating an anionic heteropoly acid
作者:Mohammad Hadi Ghasemi、Elaheh Kowsari、Abbas Shafiee
DOI:10.1016/j.tetlet.2016.01.107
日期:2016.3
yields using the Aza-Michael-type addition of various amines to vinyl compounds catalysed by a supported ionic liquid incorporating an anionic heteropoly acid. Different catalysts, including Lewisacids, Brønsted acids and heteropoly acids were investigated in which heteropoly acids having dual Brønsted and Lewisacid characteristics were excellent catalysts. The ionic liquid incorporating a polytungstate
The present disclosure relates to a class of mammalian heat shock factor (HSF) inhibitors, to pharmaceutical compositions comprising these inhibitors as well as to methods for using the inhibitors. The inhibitors inhibit stress-induced expression from heat shock gene promoters. Furthermore, the inhibitors are cytotoxic to a variety of human cancer cells types.
The catalytic effect of anion-exchanged supported ionic liquid on aza-Michael-type addition
作者:Mohammad Hadi Ghasemi、Elaheh Kowsari
DOI:10.1007/s11164-016-2840-0
日期:2017.7
An effective synthesis of anion-exchanged supported ionic liquids using diatomaceous earth as solid support and its catalytic effect on the aza-Michael-type addition is described. Anionic polytungstophosphate and bisulfate ion are used in the anion-exchange step in catalyst design. In addition, the aza-Michael-type addition of various amines to 2- and 4-vinyl pyridine was examined in this article. The catalytic system can be separated from the reaction mixture and recycled in subsequent reactions. The structure of anion-exchanged supported ionic liquid on diatomaceous earth was studied by XRD, FT-IR, SEM, TGA and BET techniques. The structure of organic products was determined by 1HNMR, 13CNMR, FTIR, CHN and MASS spectroscopy.