oscillating reactions are one of the most interesting topics in chemistry and analytical chemistry. fluctuations in concentrations of one the reacting species (usually a reaction intermediate) create an oscillating chemical reaction. in oscillating systems, the reaction is far from thermodynamic equilibrium. in these systems, at least one autocatalytic step is required. developing an instinctiv...

a very efficient one-pot three-component synthesis of pyran derivatives has been improved by condensation of aldehydes and malononitrile with dimedone under 80 °c using sucrose as natural and biodegradable catalyst in water. this method offers some advantages including inexpensive, high to quantitative yields, short reaction time, and easy work-up. therefore, this methodology is entirely green ...

an efficient and direct procedure for the synthesis of benzo[h]-indeno[1,2-b]-quinoline derivatives has been described. the procedure employs a three-component condensation reaction in one-pot using 2h-indene-1, 3-dione, naphthalen-1-amine,and aldehydes in the presence of catalytic amount of l-prolinein aqueous media.

the efficient and environmentally friendly method for the one-pot synthesis of polyhydroquinolines has been developed in the presence of cuo nanoparticles. the multi-component reactions of aldehydes, dimedone, ethyl acetoacetate andammonium acetate were carried out under solvent-free conditions to afford some polyhydroquinoline derivatives. this method provides several advantages including high...

results: a total number of 117 patients were evaluated for adverse drug reactions, among them, 97 (82.9%) were considered to have immunological drug reactions. the most common symptoms of allergic drug reactions were morbilliform eruptions, serum sickness, dress (drug rash with eosinophilia and systemic symptoms), and toxic epidermal necrolysis. in 62 patients, anticonvulsant drugs had the prom...

Background: Mild to severe post-transfusion adverse reactions have been reported in a proportion of immunodeficient patients receiving intravenous immunoglobulin (IVIg). Anti-IgA antibody has been proposed to be associated with development of such reactions. Objective: To assess the association between anti-IgA levels of different isotypes and adverse reactions induced in immunodeficient patien...

cui nanoparticles as an expedient and recyclable catalyst for the synthesis of n-cyclohexyl-3-aryl-quinoxaline-2-amines in ethanol via a multi-component reaction are established. the products were separated from the catalyst simply by filtration. the catalyst could be recycled and reused for several times without noticeably decreasing the catalytic activity.