3-Amino-1,2,4-triazolium salts as NHC-proligands: synthesis and postmodification of a new type of amino-functionalized Pd/NHC complexes

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Data of one- and two-dimensional NMR spectroscopy in the study of structure and nature of associations of hyperbranched polyester polyol Boltorn H20-OH

Structure of the hyperbranched polyester of the polyol BOLTORN H20-OH was studied by one- and two-dimensional ¹H and ¹³C NMR spectroscopy in combination with the IR spectroscopy and semiempirical quantum-chemical calculations (method AM1). The polyol structure was shown not to be stereoregular. Three basic types of H-bonding interactions of intra- or intermolecular nature were revealed: C=O...HO, OH...OH, and C=O...HO...HO.     

Hyperbranched polyester poly(3-diethylamino)propionates and their copper(<Emphasis Type="SmallCaps">ii</Emphasis>) complexes

Novel polydentate ligands were obtained from second and third generation hyperbranched polyesters containing terminal (3-diethylamino)propionate groups. Polynuclear Cu^II complexes with these ligands were synthesized. The degree of diethylamination of the polyesters increases when moving from the second to the third generation (from 56 to 81%). In polynuclear complexes, the ratios of Cu to hyperbranched ligand are 6 : 1 and 13 : 1 for second and third generation polyester polyamines, respectively. It was demonstrated using IR and ESR spectroscopy that each coordination polyhedron in the complexes is an isolated paramagnetic center of the formula CuN₂O₂Solv₂ (Solv = H₂O, DMSO).     

Synthesis and Properties of Water-Soluble Branched Polyester Poly{3-[3-(morpholin-4-yl)propyl]amino}propionate and Its Copper(II) Complex

A new water-soluble multidentate ligand based on a second-generation hyperbranched polyester containing 3-(morpholin-4-yl)propionate fragments in the terminal position has been synthesized, and its complex with copper(II) has been obtained. The degree of polyester functionalization with aminopropylmorpholine is 56%.     

Methanetricarboxylates as key reagents for the simple preparation of heteroarylcarboxamides with potential biological activity. Part 2. Reaction of methanetricarboxylates with 2-aminopyridine, 2-aminopyrimidine, 2-aminothiazole and 2-aminobenzothiazole

The reaction of methanetricarboxylates 1a,b with 2-aminopyridine, 2-aminopyrimidine, 2-aminothiazole as well as 2-aminobenzothiazole yields corresponding heteroarylcarboxylic acid esters 2a,b , 5 , 8 , 11a,b . These heterocyclic esters were used as a starting material by the reaction with primary amines to obtaining a number of heteroarylcarboxylic amides 4a-j , 6 , 10a,b , 13a-g bearing various substituents on the carboxamide group.     

Metal-polymer complexes of cobalt(II) and Copper(II) with hyperbranched polyester polycarboxylic acids

Hyperbranched polyester polycarboxylic acids of the second and third generations for use as high-efficiency complexing agents are synthesized. On the basis of these compounds, new metal-polymer complexes of cobalt(II) and copper(II) are prepared for the first time. As evidenced by IR and ERR studies, the central atom in these metal polycarboxylates occurs in the axially symmetric system MO₆. The thermal stability of polymer copper complexes is improved with increases in the content of metal ions, the degree of functionalization, and the generation number of the polyacid platform.