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12.481  Articles
1 of 1.249 pages  |  10  records  |  more records»
Multicomponent reaction of 3-amino-5-methylpyrazole, aliphatic aldehyde (paraformaldehyde or acetaldehyde) and acetylacetone in water by conventional heating, microwave or ultrasound activation undergoes on molar amounts of reagents 2:1:2, respectively, l... see more

The multicomponent condensation of aromatic aldehydes, acetoacetanilides, cyanothioacetamide, alkylating agents and morpholine in ethanol at 20°C was first synthesized to formation of substituted 4-aryl-N-aryl(3-pyridinyl)-5-cyano-6-(3,4-dihydroxyben... see more

Multicomponent domino reactions are an effective modern approach in the synthesis of different types of organic compounds, including biologically active pyrans.Aim. To study the three-component interaction of 1,2-benzoxathiin-4(3H)-one 2,2-dioxide with di... see more

This study investigated the effects of H2 and CH4 concentrations on the ignition delay time and laminar flame speed during the combustion of CH4/H2 and multicomponent syngas mixtures using a novel constructed reduced syngas chemical kinetics mechanism. Th... see more

A highly enantioselective organocatalytic Wolff rearrangement–amidation–Michael–hemiaminalization stepwise reaction is described involving a cyclic 2-diazo-1,3-diketone, primary amine and a,ß-unsaturated aldehyde. Product stereocontrol can be achieved by ... see more

Objective. To determine in dynamics the blood lidocaine concentration in the patients while performing major hepatic resection with its epidural and intravenous injection for intra– and postoperative anesthesia and to estimate the toxicity potential.Mater... see more

Starting from different ketones 1a-1f, aldehyde 2a-2g, and acetonitriles 3a-3d we synthesize some bioactive ß- Acetamido carbonyl compounds 4a-4h. We also attempted to synthesize these compounds by using phenylacetone and deoxybenzoins in place of ketones... see more

Nanomagnetic Fe3O4@SiO2@ZnCl2 was used as a simple, cost-effective, and reusable heterogeneous catalyst for the synthesis of 2,6-diamino-4-arylpyridine-3,5-dicarbonitriles by a one-pot-three-component condensation reaction of malononitrile, ammonium aceta... see more

Chemical transformations typically occur according to multiphase schemes. Changes in the concentrations of the starting materials and intermediates with time are not always described with increasing or decreasing functions. A detailed study of a complex p... see more

1 of 1.249 pages  |  10  records  |  more records»