105516-38-9

Three new dinuclear copper complexes were synthesized via condensation reaction of three new unsymmetrical N-capped tripodal amines and 2,6-diformyl-4-methylphenol, in the presence of copper(II) perchlorate. The solid-state structure of the dinuclear complex, [Cu2L1](ClO4)2, has been determined by X-ray crystallography, showing that the CuII centers have distorted square-pyramidal geometry with N3O2 coordination. The copper (II) ions are bridged by phenolic and hydroxyalkyl groups when in both cases, deprotonation of the hydrogen atoms of the OH groups occurs. The distance between the copper atoms is 3.062 ?. This compound consists of the dication [Cu2L1]2+ and two ClO4- anions in which one of ClO4- groups has a week interaction with one of the Cu atoms. All complexes were characterized by a variety of physico-chemical techniques such as elemental analyses, IR, mass spectra, conductivity measurements and electronic spectral studies. Computational investigation of mentioned binuclear Cu(II) complexes was done by using M062X method with LANL2DZ basis set in vacuo.

Two phenol-based “end-off” biscompartmental heptadentate ligands were designed by introduction of substituents with different electronic and steric properties to the chelating arms, i.e. 2,6-bis{[(2-pyridylmethyl)(2-hydroxyethyl)amino]methyl}-4-methylphen

A series of novel 2-phenyliminothiazolidine derivatives were designed and synthesized. All title compounds were characterized by 1H NMR and, in some cases, by 13C NMR, IR, and HRMS. Their agricultural bioactivities were evaluated and some of these compounds exhibited efficient herbicidal activities against Echinochloa crusgalli, Sorghum vulgare, Digitaria sanguinalis, Eclipta prostrasta, Cucumis sativus, and Brassica campestris at 50∈μg/cm3. Analysis of the quantitative structure-activity relationship (QSAR) showed that the electronic parameter was the main factor to affect herbicidal activities.

Two new tripodal amines, 2-[(2-aminoethyl)-pyridin-2-ylmethyl-amino]ethanol (1) and 2-[(3-aminopropyl)-pyridin-2-ylmethyl-amino]ethanol (2) have been prepared. These have been used to synthesis some new Schiff base complexes by template condensation with various aldehydes in the presence of Ni(II) and Cd(II) metal ions in methanol. Five new mononuclear complexes [NiL 1](ClO4), [ZnL1](ClO4), [CuL 1](ClO4), [NiL2](ClO4), [NiL 3](ClO4), and four new dimeric complexes [NiL 4]2(ClO4)2·1.5H 2O·0.5CH3CN, [NiL5]2(ClO 4)2, [NiL6]2(ClO4) 2 and [CdL6]2(ClO4)2 have been synthesized. All the complexes have been characterized using spectroscopic methods and the crystal structure of [NiL1](ClO4), [NiL4]2(ClO4)2·1.5H 2O·0.5CH3CN and [CdL6] 2(ClO4)2 were confirmed by single crystal X-ray diffraction studies. It is worth mentioning that as the chain length increases, dimeric complexes are obtained instead of mononuclear ones. Single crystal X-ray structure analysis showed that in the mononuclear Ni(II) complex, [NiL1](ClO4), the Ni(II) ion is in a distorted tetrahedral environment whilst in [NiL4]2(ClO4) 2·1.5H2O·0.5CH3CN and [CdL 6]2(ClO4)2, two distorted octahedral Ni(II) or Cd(II) ions are bridged asymmetrically by a pair of phenoxido groups. Also, the antibacterial activity of the synthesized Ni(II) complexes against Escherichia coli (Lio), Serratia marcescens (PTCC 1330), Staphylococcous aureus (ATCC 6633), and Proteus vulgaris (Lio) was screened. All Ni(II) complexes showed antibacterial effects and [NiL1](ClO4), [NiL 4]2(ClO4)2·1.5H 2O·0.5CH3CN and [NiL6] 2(ClO4)2 are more effective against E. coli.

Five platinum pyridin-2-ylcarboxaldimine complexes of the type cis-[PtCl2(2-C5H4NCH=NR)] (R = CH2CH2OH (1); R = N(CH2CH2)2O (2); R = C6H5 (3); R

The oxidative addition reactions of platinum(II) complexes [PtMe2(RN=CH-2-C5H4N)], especially when R?=?CH2CH2OH or CH2CH2CH2OH, have been studied. Both complexes react

Treatment of a series of (imino)pyridine ligands bearing appended hydroxyl groups 2-((pyridin-2-ylmethylene)amino)phenol (Hpyph), 2-((pyridin-2-ylmethylene)amino)ethanol (Hpyet), and 3-((pyridin-2-ylmethylene)amino)propanol (Hpypr) with one equiv. of CuCl2·2H2O afforded the corresponding Cu(ii) complexes in low to moderate yields. The crystal structure of (μ-Cl)2[CuCl(κ2-N,N-Hpyet)]2 reveals a symmetric dinuclear structure with the bidentate N,N-coordination mode of (imino)pyridine with no Cu-OH interaction. On the other hand, the dinuclear Cu(ii) complex of the related propyl ligand Hpypr possesses a significantly different crystal structure involving nucleophilic addition of the hydroxyl group to the aldehyde group of 2-pyridinecarboxaldehyde. The Cu complex/Cu0/TEMPO/Na2CO3 (TEMPO = 2,2,6,6-tetramethylpiperidinyl-1-oxyl) catalyst system generally exhibited good activity for aerobic oxidation of benzyl alcohol to benzaldehyde in H2O at room temperature. The dinuclear Cu(ii) complex (μ-Cl)2[CuCl(κ2-N,N-Hpyet)]2 was demonstrated as an effective catalyst toward aerobic oxidation of various benzyl alcohol derivatives, cinnamyl alcohol, and 2-thiophenemethanol.

We have synthesized and structurally characterized a new mixed valence pentanuclear Co complex, bearing a rare μ4-O-tetrahedral CoII4 unit, by employing a pyridine-like Schiff base ligand. We have performed DC magnetic susceptibility and magnetization measurements over polycrystalline samples and chemical quantum computations in order to understand the exchange interaction pattern within Co(ii) sites and ground state magnetic anisotropy. This new complex shows an overall antiferromagnetic exchange interaction whose strength strongly depends on the local symmetry of Co(ii) sites. Also, local ion magnetic anisotropy reveals a strongly axial behaviour with the lowest Kramers doublet (KD) at each Co(ii) ion sufficiently isolated from excited states at low temperatures. Two Co(ii) sites show tetrahedral symmetry and the spin only formalism including axial zero-field splitting (ZFS) term properly described them; on the other hand, the other two Co(ii) sites have distorted octahedral and square base pyramidal coordination spheres, and a strong orbital contribution leads to a failure of the spin only formalism. A model of four Seff = 1/2 exchange interacting sites is necessary in order to account for low temperature magnetization behaviour. In view of the strongly anisotropic KD states, the exchange interactions are forced to be modelled as anisotropic ones. Overall, experimental data and quantum chemical computations are in good agreement, supporting the proposed model for magnetic behaviour.

The invention discloses a compound for detecting brassicaceous vegetable sclerotinia sclerotiorum, wherein the structure of the compound is shown in the specification, wherein in the formula, R1 is selected from hydrogen and halogen; R2 is selected from hydrogen and halogen; R3 is selected from hydrogen and halogen; R4 is selected from hydrogen and halogen; and R5 is selected from hydrogen and halogen. The compound provided by the invention can realize rapid detection of brassicaceous vegetable sclerotinia sclerotiorum, has the characteristics of high accuracy, low operation difficulty, short time consumption and the like, and is worthy of popularization and application.

Figure Persented: Cadmium(II) complexes of ethyl 4-hydroxy-3,5-bis(((2- hydroxyethyl)(pyridin-2-ylmethyl)amino)methyl)benzoate (CO2EtH 3L1) and ethyl 4-hydroxy-3,5-bis(((2-methoxyethyl)(pyridin-2- ylmethyl)amino)methyl)benzoate (COs

This invention relates to a novel class of heterocyclic compounds that bind chemokine receptors, inhibiting the binding of their natural ligands thereby. These compounds result in protective effects against infection by HIV through binding to chemokine receptors, including CXCR4 and CCR5, thus inhibiting the subsequent binding by these chemokines. The present invention provides a compound of Formula I wherein, W is a nitrogen atom and Y is absent or, W is a carbon atom and Y═H; R1to R7may be the same or different and are independently selected from hydrogen or straight, branched or cyclic C1-6alkyl; R8is a substituted heterocyclic group or a substituted aromatic group Ar is an aromatic or heteroaromatic ring each optionally substituted at single or multiple, non-linking positions with electron-donating or withdrawing groups; n and n′ are independently, 0-2; X is a group of the formula: Wherein, Ring A is an optionally substituted, saturated or unsaturated 5 or 6-membered ring, and P is an optionally substituted carbon atom, an optionally substituted nitrogen atom, sulfur or oxygen atom. Ring B is an optionally substituted 5 to 7-membered ring. Ring A and Ring B in the above formula can be connected to the group W from any position via the group V, wherein V is a chemical bond, a (CH2)n″group (where n″=0-2) or a C═O group. Z is, (1) a hydrogen atom, (2) an optionally substituted C1-6alkyl group, (3) a C0-6alkyl group substituted with an optionally substituted aromatic or heterocyclic group, (4) an optionally substituted C0-6alkylamino or C3-7cycloalkylamino group, (5) an optionally substituted carbonyl group or sulfonyl. These compounds further include any pharmaceutically acceptable acid addition salts and metal complexes thereof and any stereoisomeric forms and mixtures of stereoisomeric forms thereof.

In order to synthesize penta- and hexa-gonal platinum(II) metallocycles, bidentate ligands such as iminopyridines (L) have been prepared and characterized.The (2-pyridil)CH=NR1 and (2-pyridil)CH2N=CR1R2 ligands react with Zeise's salt to afford directly the pentagonal chelates PtCl2L.Their structure and the cis-stereochemistry were shown by the usual spectroscopic methods and for cis-PtCl2,H2O by an X-ray diffraction study.On the other hand, the (2-pyridil)(CH2)2N=CR1R2 ligands do not afford the expected hexagonal metallocycles; instead, after complexation at the nitrogen atom of the imine they give rise to the (2-pyridil)ethylamine complex formed after hydrolysis of the coordinated ligands.Complexes trans-1R2>-PtCl2 represent when R1 is estradiol a model for "cytotoxic with delayed activity".