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The reaction between alkyl(aryl) isocyanides, dialkyl acetylenedicarboxylates and alkyl cyanoformates under solvent-free conditions leads to dialkyl 2-cyano-5-alkyl(aryl)imino-2-alkoxy-2,5-dihydrofuran-3,4-dicarboxylates in high yields.
The physicochemical and catalytic properties of bulk uranium oxides prepared by the thermal decomposition of uranyl nitrate (UO 2 (NO 3 ) 2 ·6H 2 O) and precipitation from an aqueous solution of this salt are reported.
A new comprehensive approach based on the field-flow fractionation of particles in a rotating coiled column and their characterization by capillary zone electrophoresis and scanning electron microscopy has been applied to the investigation of irregularly shaped hydroxyapatite sibmicron clusters...
Interaction of methyl 1-bromocyclobutanecarboxylate with zinc and 1,2-diphenyl-1,2-ethanedione affords the title compound, whose structure was confirmed by X-ray analysis.
17-(1,2,3-Dithiazole) androstene derivatives were synthesized from commercially available Pregnenolone acetate involving the reaction between 3b-acetoxy-20-hydroxyimino-5-pregnene with sulfur monochloride as the key step.
A lean hydrogen–air (H 2 < 10%) mixture can be repeatedly ignited. Numerical simulation based on Boussinesq approximation is in qualitative agreement with the observed features of combustion.
Grinding of isatins with malononitrile in the presence of 1–5 equiv. of water for 15 min at room temperature affords the corresponding (2-oxo-1,2-dihydro-3 H -indol-3-ylidene)malononitriles, the Knoevenagel condensation products, in 89–99% yields.
The carbamide complexes of lanthanide polyiodoiodates (Tm(ur) 7 )(I 3 ) 3 ·2I 2 , (Yb(ur) 6 )(I 3 ) 3 and (Lu(ur) 6 )(I 3 ) 3 (ur is O=C(NH 2 ) 2 ) have been synthesized and structurally characterized. The structure-forming role of the pentaiodide ions taking part in the formation of extended...
Interaction of 1-(oxiran-2-ylmethyl)-1 H -indole-3-carboxaldehyde with primary amines occurs at oxirane moiety and leads to b-aminoalcohols. Quantum-chemical calculations show that these products are more stable than possible alternative Schiff bases arising from aldehyde group of the considered...
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