3 results about "Bromoacetonitrile" patented technology

This invention discloses a cyano-functionalized polyacrylic acid-based composite solid electrolyte material and its preparation method and application, belonging to the field of lithium battery technology. The method includes the following steps: (1) adding TMG, bromoacetonitrile, and bromopropylene to polyacrylic acid for catalytic esterification to obtain PAA-g-(CN / Vinyl); (2) mixing the PAA-g-(CN / Vinyl) with a photoinitiator and a lithium salt to obtain a polymer composite electrolyte precursor solution, followed by curing and crosslinking to obtain the cyano-functionalized polyacrylic acid-based composite solid electrolyte material. Starting from molecular design, this invention forms an integrated high-performance solid electrolyte system through a one-step controllable esterification reaction and subsequent composite curing, providing an innovative electrolyte solution for the development of safe, high-energy-density solid-state batteries.

The invention discloses a preparation method of an organic fluorescent compound with a piezochromic characteristic, and belongs to the technical field of fluorescent material preparation. The method comprises the following steps: S1, dissolving an initial compound in an acetonitrile solution, adding a first substance alkali, stirring, dropwise adding bromoacetonitrile to room temperature, and stirring overnight for reaction; s2, reserving filtrate after suction filtration, performing rotary evaporation to obtain a solid crude product, and performing column chromatography purification to obtain an intermediate compound; s3, dissolving the intermediate compound in absolute ethyl alcohol, adding a second substance, stirring until the second substance is stable, adding 4-diphenylaminobenzaldehyde, and stirring and reacting at room temperature; and S4, carrying out suction filtration after the reaction is finished, leaching a filter cake by using normal hexane, and drying to obtain the target compounds (E)-2-(4-chlorine-1H-pyrazole-1-yl)-3-(4-(diphenylamino) phenyl) acrylonitrile, (E)-2-(4-bromo-1H-pyrazole-1-yl)-3-(4-(diphenylamino) phenyl) acrylonitrile and (E)-2-(4-iodine-1H-pyrazole-1-yl)-3-(4-(diphenylamino) phenyl) acrylonitrile. The prepared compound has obvious piezochromic luminescent property, the raw materials are low in price, and the synthesis method is simple and easy to operate.

The application discloses a preparation method of a beta-ketonitrile derivative, which comprises the following steps: reacting alpha-bromoacetonitrile, aryl boronic acid, bis(triphenylphosphine)nickel chloride, 3,4,7,8-tetramethyl-1,10-phenanthroline, formic acid, acetic anhydride and sodium carbonate in C at 80 o for 20 hours, and after the reaction is completed, post-treatment is performed to obtain the beta-ketonitrile derivative. The preparation method uses alpha-bromoacetonitrile and aryl boronic acid as reactants, uses formic acid as a carbonyl source, has mild reaction conditions, simple operation, a wide functional group tolerance range of a substrate and high reaction efficiency. According to actual needs, a plurality of beta-ketonitrile derivatives can be synthesized, and the method is convenient to operate and wide in practicability.