An efficient and environmentally benign one-pot condensation of cyclic diketones, aldehydes naphthols was achieved with 1,4-diazabicyclo[2-2-2]octane supported on Amberlyst-15 as a novel catalyst, producing variety benzoxanthenones in good to excellent yields. The advantages this multicomponent reaction include the use heterogeneous solventless conditions simple methodology that is atom-economi...

A series of unsymmetrical 1,3-diaryl-β-diketones 1-6 displaying molecular conformation-dependent fluorescence quantum yields have been synthesized. Crystals with planar molecular conformation such as 1, 2, 3 and 4 are highly fluorescent (φf: 39-53%), and the one holding slightly twisted conformation (5) is moderately luminescent (φf = 17%), while crystal 6 possessing heavily bent structure is c...

New complexes of Dy (III) and Gd with b-diketones containing unsaturated aryl substituents were synthesized. Metal polymers based on synthesized obtained by the method radical polymerization. The composition structure metal are established. It is shown that during polymerization coordination environment central ion remains unchanged. spectral-luminescent cha­racteristics compounds studied. pres...

The oxidation of β-hydroxyketones to β-diketones was systematically investigated. o-Iodoxybenzoic acid (IBX) was found to be efficient, operationally easy, and superior to other common oxidants. The reaction is suitable for milligram- to gram-scale oxidations.

The first mercury-catalyzed synthesis of 1,2-diketones by alkyne oxidation has been developed. This inexpensive method extends the potential mercury catalysis and allows rapid construction various α-carbonyl amides in good yields with high functional group tolerance.

The selective synthesis of different products from the same starting materials in water, which is the most abundant solvent in nature, is a crucial issue as it maximizes the utilization of materials. Realizing such reactions for ketones is of considerable importance because numerous organic functionalities can be obtained via nucleophilic addition reactions. Herein, we report chemoselective red...

New ytterbium (III) compounds with β-diketones (2,7-dimethyl-octene-1-dione-3,5 and 2,6-dimethylheptene-1-dione-3,5) their derivatives phenanthroline have been synthesized. The composition chemical structure of the obtained complexes determined by several Phy­sico-chemical investigations. It has shown, that Yb ion coordinates three ligand molecules coordination sphere is supplemented two mole­c...

Abstract Oxamates as building blocks play an important role in organic and bioorganic chemistry well coordination material sciences. In this paper, we present new fluorinated derivatives, which are synthesized from selected primary amines R F NH 2 (R =CH CF 3 , CH CHF CH(CF ) CH(CH )CF or their hydrochlorides ethyl oxalylchloride. Since oxamates can be considered 1,2 diketones, investigated pro...