39 results about "Diphenylethylenediamine" patented technology

The invention discloses a (R, R)-1,2-diphenylethylenediamine nickel azide complex. The (R, R)-1,2-diphenylethylenediamine nickel azide complex has a chemical formula of [Ni(L)2(N3)] infinity ClO4.0.5H2O, wherein L is a chiral bidentate nitrogen-containing organic ligand. The preparation method comprises the following steps: placing a methanol solution as an underlayer in which nickel perchlorate and chiral bidentate nitrogen-containing organic ligand L are dissolved into a reaction vessel, adding a mixed solution of methanol and water as an intermediate buffer layer, slowly adding a water solution as an uppermost layer in which sodium azide is dissolved into the reaction vessel, standing for 5 days, filtering, washing and carrying out vacuum drying to obtain the target product. A novel one-dimensional chain nickel complex is prepared by using azide anion as a bridging ligand, the preparation process is simple, the reaction is carried out under a normal temperature and a normal pressure, the posttreatment is easily performed, and the yield is high and can reach 83%. The (R, R)-1,2-diphenylethylenediamine nickel azide complex has good ferroelectric property and has potential broad application prospects in the field of information storage as a novel ferroelectric material.

The invention relates to a novel niacin drug salt and a preparation method thereof. The salt is made from niacin and 1,2‑diphenylethylenediamine in a 2:1 molar ratio. The present invention adopts a green synthesis method of micro-liquid assisted grinding and two methods of slow volatilization at room temperature to prepare niacin-1,2-diphenylethylenediamine drug salt with high purity. The solubility of the obtained nicotinic acid drug salt is increased by 3.8 times, 6.7 times and 3.9 times in the buffer solution of pH=1.2, 4.5 and 6.8 respectively, and the crystal form is stable and does not decompose under the condition of normal temperature. The method requires only a trace amount of catalytic amount of organic solvent, has little pollution, mild reaction conditions, simple operation and high product purity.

The invention provides a method for measuring the optical purity of chiral carboxylic acid by use of a chiral chemical shift reagent. A series of chiral diamines such as 1,2-diphenylethylenediamine, cyclohexyldiamine and dithio (diurea) derivatives of binaphthyldiamine are used as chiral shift reagents, and the optical purity of the chiral carboxylic acid is quickly detected by a nuclear magnetic resonance spectrometer. The method provided by the invention has the advantages of easy synthesis of shift reagents and simplicity in operation, and is a quick, efficient, convenient and practical detection means.

Ni(II)-Salen ligand metal-organic framework crystal material and its preparation method and application. The chemical formula of the material: {[Zn 4 O(L) 6 ]·DMF·H 2 O} n , where L is the dicarboxylate dicarboxylate of (R,R)-N,N'-bis(3-methyl-5-carboxysalicylidene)-1,2-diphenylethylenediamine nickel(II) Valence anion, n is the degree of polymerization. The metal organic framework crystal material adopts a solvothermal synthesis method, has simple operation, low cost, high yield, and is easy for large-scale industrial production. The prepared MOF crystalline material has high thermal stability (400°C), and the BET specific surface area is 228m 2 / g. For CO at 273K, 1atm 2 The adsorption capacity is 18.8m 3 / g. In the presence of an oxidizing agent, the selective oxidation of styrene is catalyzed in an aqueous phase to generate benzaldehyde with a yield of 99%. The catalyst is recycled five times with little loss of activity. In the presence of tetrabutylammonium bromide, 1 atm, 50 ℃ solvent-free catalysis of epoxy styrene and CO 2 The reaction produces styrene carbonate with a yield of 91%. The catalyst is recycled five times and still maintains its activity. This material is a good heterogeneous catalyst.

The invention discloses a low-melting-point nylon hot-melt yarn for preparing fly-woven shoe uppers, which is formed by polymerizing polyamines and polyacids as reactants, and adding catalysts, modifiers and other auxiliary agents for further reaction; A mixture of decanediamine, pentaethylenehexamine and (1R,2R)‑(‑)‑N‑(p-toluenesulfonyl)‑1,2‑diphenylethylenediamine was chosen for the polyamine; A mixture of sebacic acid, terephthalic acid, and dodecenylsuccinic acid was selected; bis(pentamethylcyclopentadiene) zirconium dichloride, N,N-dimethylanilinium were selected as catalysts A mixture of tetrakis(pentafluorophenyl)borate; the modifiers are 3,5-diamino-1,2,4-triazole, bicyclo(2.2.2)oct-5-ene-2 , a mixture of 3‑dicarboxylic anhydride and 2,2‑bis[4‑(4‑aminophenoxy)phenyl]‑1,1,1,3,3,3‑hexafluoropropane. Nylon thermal fuse not only has a lower melting point, but also has greater fiber strength and elongation, and also has stronger anti-ultraviolet properties and better color fastness, and can be used to prepare fly-knit uppers.