Iodination of Alcohols Under Microwave Irradiation Using KI in the Presence of a Catalytic Amount of Ionic Liquid Triethylamoniom Hydrogensulfate
摘要:
The iodination of alcohols with KI in the presence of a catalytic amount of triethylamoniom hydrogensulfate ([image omitted]) as a novel and inexpensive ionic liquid under microwave irradiation has been investigated.
Aiding the versatility of simple ammonium ionic liquids by the synthesis of bioactive 1,2,3,4-tetrahydropyrimidine, 2-aminothiazole and quinazolinone derivatives
Simple ammonium ionic liquids [ILs] are efficient, green, environmentally friendly catalysts in promoting the Biginelli condensation reaction, Hantzsch reaction and Niementowski reaction to afford 1,2,3,4-tetrahydropyrimidine, 2-aminothiazole and quinazolinone derivatives respectively by eliminating the need for harmful volatile organic solvents. These [ILs] are air and water stable, easy to prepare
[Et<sub>3</sub>NH][HSO<sub>4</sub>]-catalyzed eco-friendly and expeditious synthesis of thiazolidine and oxazolidine derivatives
作者:Ali Mohammed Malla、Mehtab Parveen、Faheem Ahmad、Shaista Azaz、Mahboob Alam
DOI:10.1039/c4ra15590d
日期:——
reports a facile and green approach for the synthesis of thiazolidine/oxazolidine derivatives 4(a–u) in excellent yields (92–98%) with high purity. The protocol involves a one-pot three-componentreaction of substituted 1,3-diketones 1(a–g), cyanates 2(a–c) and ethylchloroacetate (3) in ionicliquid [Et3NH][HSO4] under solvent-free conditions. The notable feature of this pathway is that the ionic liquid
Rapid formation of diphenylmethyl ethers and thioethers using microwave irradiation and protic ionic liquids
作者:Jarrad M. Altimari、Joshua P. Delaney、Linden Servinis、Jennifer S. Squire、Megan T. Thornton、Simren K. Khosa、Benjamin M. Long、Mark D. Johnstone、Cassandra L. Fleming、Frederick M. Pfeffer、Shane M. Hickey、Matthew P. Wride、Trent D. Ashton、Bronwyn L. Fox、Nolene Byrne、Luke C. Henderson
DOI:10.1016/j.tetlet.2012.02.011
日期:2012.4
Using microwave irradiation and protic ionic liquids (pIL) as co-solvent and catalyst for the synthesis of several diphenylmethylethers was achieved. The desired ethers were isolated simply by filtration through a silica plug to remove the pIL and proceeded in high yields (60–98%). These reactions were extremely rapid (10–30 min) and occurred under mild conditions (80 °C). This protocol was also successfully
Four ammonium and imidazolium ionic liquids (ILs) have been synthesized and screened against the T98G cell line (brain cancer) and HEK normal cells. Treatment induced metabolic cell death (MTT), growth inhibition, clonogenic inhibition were studied as cellular response parameters. Treatment with ILs enhanced growth inhibition and cell death in a concentration dependent manner in both the T98G and HEK cell lines. At higher concentrations (>0.09 mg/mL) the cytotoxic effects of the ILs were highly significant. An inhibitory effect on clonogenic capacity was also observed after cell treatment. Amongst all ILs; IL 4 (BMIMCl) exhibited potent activity against T98G brain cancer cells. Despite potent in-vitro activity, all ILs exhibited less cytotoxicity against the normal human HEK cells at all effective concentrations.
The depolymerisation of lignin directly in the black liquor was studied, comparing two ionic liquids as extracting solvents (butylimidazolium hydrogen sulphate and triethylammonium hydrogen sulphate), under oxidising conditions.