52results about How to "Applicable to a wide range of substrates" patented technology

The invention discloses a N-(3,4-dihydroxyl phenyl)ethyl-methacrylamide copolymer and a preparation method therefor. By taking dopamine and a fluorine-containing compound as raw materials, the dopamine is modified by using the fluorine-containing compound by virtue of a copolymerization method so as to prepare the copolymer containing a fluorine-containing compound side chain and a pyrocatechol-anchored radical side chain. The copolymer, on the one hand, has a pyrocatechol-anchored radical of dopamine to provide a good adhesive performance; one the other hand, the coplymer has the fluorine-containing compound radical, so that the copolymer has oil resistance, corrosion resistance and a hydrophobic and oleophobic property, and the protective performance of a functional protecting coating is extremely improved. The invention further discloses a functional protecting surface material with a good adhesive performance. The material is obtained by self-assembling the N-(3,4-dihydroxyl phenyl)ethyl-methacrylamide copolymer on the surface of the material by soaking. The material has a good protecting performance, a super-hydrophobic property, an antifouling capability and a adhesive performance; is wide in application range of a base; and is non-toxic and free of pollution.

The invention provides a method of catalyzing trifluoro-ethylation of aromatic secondary amine by ferriporphyrin. The method comprises the following steps: adding trifluoroethylamine salt and nitriteto a diazo-reaction first and then adding aromatic primary amine and a ferriporphyrin catalyst for a trifluoro-ethylation reaction to obtain a trifluoro-ethylated aromatic secondary amine compound inan acidic solution system. The reactions of the method are carried out at room temperature, and the reaction condition is mild, and an intermediate product is not separated through a one-pot reaction.The method is few in reaction step, simple to operate, wide in application range of primers, wide in source of raw materials and high in yield of reaction products.

The invention discloses a method for synthesizing a spiro-oxindole cyclopentane-β-lactone compound. Specifically, phenyl unsaturated aldehydes and unsaturated ketoesters are used as reactants, nitrogen-heterocyclic carbene is used as a catalyst, and the reaction to obtain the spiro-oxindole cyclopentane β ‑ Lactone compounds. The method disclosed by the invention has simple and easy raw materials, mild reaction conditions, simple and convenient post-treatment, wide range of applicable substrates, high yield, high diastereoselectivity and enantioselectivity; the product synthesized thereby can be used for Intermediates in the synthesis of drugs and pesticides.

The invention discloses a synthesis method of a chiral spiro-oxindole-benzopyran-keto-3,4-dihydro-pyran compound, specifically derivatizing β,γ-unsaturated α- The ketoester and 3-hydroxy-4hydro-chromene-4-one are reactants, and the product is synthesized in a solvent under the catalysis of chiral multifunctional chiral quinine thiourea. The method disclosed by the invention has simple and easy raw materials, mild reaction conditions, simple and convenient post-treatment, wide range of applicable substrates, high yield and high enantioselectivity, and the synthesized products can be used to synthesize drugs and insecticides and intermediates of optoelectronic materials.

The invention relates to a synthetic method for 2-methyl-4-carbonyl-2,4-diphenyl butyraldehyde. The synthetic method comprises the following steps: firstly adding 1,1-dimethoxy-N,N-dimethyl methylamine into a methylbenzene solution of acetophenone, after stirring and performing a heating reaction, quenching a product with water, and then carrying out extraction, drying and purification to obtain (E)-3-(dimethyl amino)-1-phenylprop-2-ene-1-ketone; slowly dropwise adding acetophenone into a methanol solution of p-toluenesulfonhydrazide to obtain p-toluenesulfonylhydrazone; and carrying out a reaction on (E)-3-(dimethyl amino)-1-phenylprop-2-ene-1-ketone, p-toluenesulfonylhydrazone, copper hydroxide and potassium carbonate in argon shield, and purifying a reaction product to obtain 2-methyl-4-carbonyl-2,4-diphenyl butyraldehyde. The method is wide in substrate application range, the tolerance for various functional groups is high, cheap copper is taken as a catalyst, and the reaction condition is mild; and a synthetic 1,4-ketoaldehyde compound can be easily converted into various useful synthetic structures, and carries an alpha-quaternary three-dimensional center.