32 results about "Butadiene Derivatives" patented technology

The invention belongs to the field of fine chemicals and related chemical technologies, and provides a preparation method of butadiene derivatives. Using phenylacetylene and its derivatives as raw materials, under the action of metal catalysts and additives, react in anhydrous organic solvents to convert them into 2,3-disubstituted-1,3-butadiene compounds. The invention has the beneficial effects of simple and convenient operation, mild conditions, environmental friendliness, the possibility of realizing industrialization, and obtaining butadiene compounds with a relatively high yield; the butadiene compounds synthesized by the method can be further functionalized Various compounds are obtained, which are then applied to the development and research of natural products, functional materials and fine chemicals.

The present invention relates to a preparation method of aromatic organosulfur functionalized 1,4-cis polybutadiene comprising: polymerizing 1,3-butadiene or butadiene derivative in the presence of a specific catalyst in a nonpolar solvent to prepare 1,4-cis polybutadiene; and reacting the resultant polybutadiene with an aromatic organosulfur compound. Such prepared aromatic organosulfur functionalized 1,4-cis polybutadiene is without ultrahigh molecular weight region and, thus, has narrow molecular weight distribution.

The invention discloses a synthesis method and equipment for tetramethylammonium hydroxide. The synthesis method comprises dissolving a butadiene derivative and a supporting electrolyte in an organic solvent to obtain an electrode electrolyte, and electrolyzing a graphite electrode on the electrode. Electricity is applied under the liquid, so that a yellow polymer film is formed on the surface of the graphite electrode to obtain a modified graphite electrode, and the modified graphite electrode is used in the anode chamber of the electrolytic cell. The invention forms a layer of protective film on the surface of the graphite electrode, inhibits the oxidation of the graphite electrode, slows down the corrosion rate of the graphite electrode, improves the current efficiency of electrolysis, and can obtain good current efficiency even at a large electrolyte circulation rate and electrode life.

A composition containing a stabilizer that does not turn yellow upon curing and acts as a polymerization inhibitor during production and storage of a (meth)acrylic modified (hydrogenated) polybutadiene. The curable composition contains 0.1-99.9999% by weight of component (A), which is a (meth)acrylic modified (hydrogenated) polybutadiene, and 0.0001-10% by weight of component (B), which is a compound represented by formula (IV).

The invention provides a general method for synthesizing 2,4-hexadiene dinitrile derivatives with various substituents: first, 1,4-dihalo-1,3-butadiene derivatives and cyanide Copper is mixed, and N, N-dimethylformamide solvent is added to reflux, and the reaction product is concentrated and purified to obtain 2,4-hexadiene dinitrile derivatives. The synthesis method of the present invention adopts the oxidation addition / reduction elimination reaction of a continuous organohalogen reagent to cuprous cyanide, which is scientific and reasonable, the raw materials are easy to obtain, the application range is wide, the separation yield is high, the experimental equipment and operation are simple and easy, Easy to industrialize.

The present invention provides a 4'-substituted benzyloxy -3',5'-dimethoxyphenyl-butadiene type derivatives and the medical salt or solvent thereof with the above general formula , wherein 4'-subsituted benzyloxy -3',5'-dimethoxyphenyl-benaldehyde and bromoethylcrotonate-triphenylphosphonium are mixed, and the mixture is reduced by a complex of lithium aluminium hydride and aluminium chloride to obtain the corresponding chemical compound. The chemical compound provided by the present invention has important biological activity, cytotoxicity experiments in vitro on human lung cancer cells (A549), human chronic myeloid leukemia cell Line (K562), human karyotype leukemia cell(HL-60), and mice lymph-type tumor (P388D1) tumor cells indicate that the derivatives of 4'-substrate benzyloxy -3',5'-dimethoxyphenyl-butadiene has the suppressive function on both the growth of tumor cells and multiple tumors in vitro, and can be applied to preparation of drugs for tumor prevention and treatment.

The present invention relates to a process of preparing 1,4-trans polybutadiene grafted with an aromatic organosulfur compound, the process comprising (a) preparing 1,4-trans polybutadiene by polymerizing 1,3-butadiene or butadiene derivatives in a nonpolar solvent in the presence of a particular catalyst, and (b) preparing the 1,4-trans polybutadiene grafted with an aromatic organosulfur compound by reacting the trans polybutadiene with an aromatic organosulfur compound. The organosulfur molecule in the molecular chain minimizes ultra high molecular weight fraction and narrows the molecular weight distribution, thereby enabling this polymer to show improved processability and tensile properties.

The invention discloses a synthesizing method of naphthalene polyfluoride derivant synthesized by hexafluorobenzene and organic lithium compound directly, which is characterized by the following: reacting organic lithium compound by 1, 4-diiodio-1, 3-butadiene derivant and alkyl lithium; making 1, 4-diiodio-1, 3-butadiene derivant react with alkyl lithium first and hexafluorobenzene then to prepare the product.

The invention provides a method for preparing homoallyl alcohol compounds, a synthesis method and application thereof, and belongs to the field of organic chemistry. At room temperature and inert gas protection, in the presence of organic photosensitizers, titanium catalysts and electron donors, aldehydes or ketones react with 1,3-butadiene derivatives and halogenated alkanes under blue light irradiation to obtain homoallylic alcohols with high selectivity class of compounds. The method has the advantages of mild reaction conditions, short reaction steps, simple post-treatment, and high stereoselectivity and regioselectivity of reaction products. At the same time, this method can be used for the derivatization of natural products.