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Neonicotinoids, among the most important pesticides in recent decades, have played pivotal roles in controlling agricultural pests. However, the toxicity to some environmentally beneficial insects is a cause of concern. The development of novel insecticides safer to these insects is increasingly urgent.A novel series of hydrocarbylidene nitrohydrazinecarboximidamides were designed and synthesised, starting from S-methylisothiourea sulphate. Preliminary bioassays showed that the target molecules exhibited good activities against Lipaphis erysimi (turnip aphid) and Myzus persicae. As shown by initial insecticidal activity data, most of the target compounds had moderate to excellent activities at a concentration of 600 mg LStructure-activity relationship analysis indicated that a suitable flexible alkyl chain at the imine point and a Cl-substituted pyridine ring are the most crucial factors affecting the activity. © 2017 Society of Chemical Industry.

采用高温固相法合成了金属离子Li+、Na+、Al3+掺杂的BaF2：Eu3+荧光粉体.用X射线衍射、扫描电子显微镜、光致发光光谱和荧光衰减曲线分别对其微结构、形貌、发光性能进行表征.实验结果表明，在266 nm激发下，与单掺23% Eu3+样品相比，掺杂摩尔浓度为9%的Li+、Na+、Al3+样品的611 nm处发光强度分别提高了4.71倍、1.51倍及1.35倍.掺入Li+或Al3+后Eu3+的5D0能级的寿命变长，Na+的掺入使Eu3+的能级寿命变短.相比BaF2：23% Eu3+样品，9% Li+、6% Na+、23% Eu3+共掺BaF2样品及9% Li+、12% Al3+、23% Eu3+共掺BaF2样品的发光分别提高1.73倍和3.05倍，相应的能级寿命均增加.

A series of novel C3 symmetric tris(thiazoline) ligands were synthesized from trimethyl nitrilotriacetate and an enantiomerically pure amino alcohol via an efficient route. Compound 7a showed moderate to good catalytic enantioselectivity for the asymmetric allylic oxidation of cycloalkenes.

The title compound, C29H28O9, was isolated from the reaction of 4,6-dimethoxy-2-(4-methoxyphenyl)-3-benzofuran and α-methoxycarbonylcinnaminate. The two aromatic rings form a dihedral angle of 22.7 (1)°. One methoxycarbonyl group is disordered between two orientations in a 0.612 (4):0.388 (4) ratio. The crystal structure exhibits no significantly short intermolecular contacts.

The molecular recognition of fungicide of kresoxim-methyl with beta-cyclodextrin (beta-CD), methyl-beta-cyclodextrin (RAMEB)and hydroxypropyl-beta-cyclodextrin (RAMEB) was investigated by using UV-Vis spectroscopy analysis. The effect of temperature and polarity of solvent on the recognition interaction was studied. The driving force and the possible structure of the inclusion complexes were also discussed. The results presented that they formed inclusion complexes with a stoichiometry of 1:1, and the formation constant of inclusion complexes was in the order of Ku(HP-beta-CD)(beta-CD)Kp(RAMEB) at 298.15 K. Elevation of the temperature triggered a decrease in stability of the inclusion complexes and the value of K(beta-D) was the biggest ator =303.15 K. The formation constant reduced sharply with the decreasing polarity of the solvent. The standard molar Gibbs energies, enthalpies and entropies were all negative. All the results indicated that the association of the guest molecule with beta-CD was favored by enthalpy changes, and hydrophobicity and hydrogen bond interaction were main driving forces for the inclusion reaction. Our findings provided an important proof for the use of inclusion complexes of kresoxim-methyl with CDs.

In the present experiment, we mainly discussed the function mechanism between the humic acid and a new kind of fungicide Pyrimorph, aiming to play a positive role in the reduction of contamination caused by pesticides on environment. After the disposition step by step, the humic acid was separated into three parts. Then IR and fluorescence analytical methods were employed to explain the functional mechanism between the pesticide and each part of humic acid. As a result, there are extensive interactions between the three parts of the humic acid and the fungicide Pyrimorph. The interactions between fulvic acid and Pyrimorph are mainly the H-bond and the transfer of the electric charge caused by the C=O of the Pyrimorph and the -OH of the fulvic acid, and the interaction between matomeilon and Pyrimorph is mainly the transfer of the electric charge, and the interaction between humin and Pyrimorph is the weakest. It was showed that the fulvic acid is the most active part in the humic acid. That's to say the intensity of the interaction between the three parts of the humic acid and the fungicide Pyrimorph is smaller and smaller with the order of molecular weight from small to big, namely fulvic acid, matomeilon acid and humin.

In the crystal structure of the title compound, C26H18O3, molecules with stereochemistry (1R,2S,R), are connected by O—H...O hydrogen bonds, forming chains.