12 results about "Amino nitriles" patented technology

The invention relates to the technical field of ink, and particularly discloses ink-jet ink with good weather resistance and a preparation method of the ink-jet ink. The ink-jet ink with good weather resistance comprises the following raw material components: 3.2-4.0 wt% of a modified dye; 2.8 to 3.4 wt% of waterproof nano particles; 8.0 to 10.0 wt% of a water-based epoxy resin emulsion; 4.5 to 5.0 wt% of a humectant; 2.5-3.0 wt% of a color fixing auxiliary agent; 2.5 to 3.0 wt% of a pH conditioning agent; 2.2 to 2.8 wt% of a thickening agent; the solvent is the balance; the preparation method of the modified dye comprises the following steps: blending the dye and an aromatic aminonitrile modifier, reacting, separating out solid, and post-treating, the preparation method comprises the following steps: blending the raw materials, and uniformly stirring. The ink-jet ink has good weather resistance and color fixing capacity, the light fading rate is smaller than or equal to 22%, the washing residual rate is larger than 90%, and the color fixing rate is not lower than 85%.

Positron emission tomography and magnetic resonance imaging are among the most widely used modalities, requiring isotopic labeling of bioactive molecules to generate the desired imaging probes. This method was applied to a wide range of aliphatic carboxylic acids, including complex and functionalized drug molecules, amino acids and short peptides. For non-stabilized radicals derived from benzylic and non-benzylic carboxylic acids, a copper co-catalyst was introduced to obtain the labeled nitriles, whereas metal-free conditions were applied to nitrogen-stabilized radical derived from a-amino acids and peptides to form the radiolabeled a-amino nitriles. These radiolabeled nitriles were then easily converted back to radiolabeled carboxylic acids.

The application relates to an industrialized preparation method and application of high-purity alpha-amino nitrile. The application belongs to the technical field of fine chemical synthesis. The purpose of the application is to solve the technical problems of low yield and purity, high cost and unsuitability for industrialized production of the existing alpha-amino nitrile synthesis method. The method of the application is as follows: taking imine as a substrate, alpha-amino nitrile is synthesized by reacting with acetone cyanohydrin under the action of an ionic liquid. The method of the application synthesizes a nucleophilic addition cyanyl product of a carbon-nitrogen double bond in one step at room temperature. By selecting the ionic liquid and reasonably controlling the proportioning of various substances, the reaction process is greatly accelerated, the high-efficiency synthesis of alpha-amino nitrile is realized, the purity of alpha-amino nitrile is remarkably improved, the substrate adaptability is good, and the method can be widely applied to the synthesis in the fields of medicines and the like in the industry and the academia.

The present application relates to a cis-para-substituted cyclohexylaminonitrile salt represented by formula (I), a preparation method therefor and use thereof as an intermediate for preparing a pesticide, and a method for preparing the pesticide by using same as an intermediate. In the formula, R is C1-10 alkyl or C1-10alkyloxy, C2-10 alkenyl or C2-10 alkenyloxy, C2-10 alkynyl or C2-10 alkynyloxy, C3-10 cycloalkyl or C3-10 cycloalkyloxy, C3-10 heterocycloalkyl or C3-10 heterocycloalkyloxy containing 1-2 heteroatoms selected from O and N.

Positron emission tomography and magnetic resonance imaging are among the most widely used modalities, requiring isotopic labeling of bioactive molecules to generate the desired imaging probes. This method was applied to a wide range of aliphatic carboxylic acids, including complex and functionalized drug molecules, amino acids and short peptides. For non-stabilized radicals derived from benzylic and non-benzylic carboxylic acids, a copper co-catalyst was introduced to obtain the labeled nitriles, whereas metal-free conditions were applied to nitrogen-stabilized radical derived from a-amino acids and peptides to form the radiolabeled a-amino nitriles. These radiolabeled nitriles were then easily converted back to radiolabeled carboxylic acids.

This invention provides a method for synthesizing milobalin benzylsulfonic acid, comprising the following steps: a chiral enone undergoes a condensation reaction with cyanoacetate in the presence of ammonium acetate to obtain an unsaturated cyano ester; next, the unsaturated cyano ester undergoes a condensation reaction with nitromethane to obtain a nitro ester; the nitro ester is then deesterified at high temperature to obtain a chiral nitro nitrile, which is then reduced to a chiral amino nitrile; subsequently, the chiral amino nitrile is hydrolyzed to obtain the free base of milobalin; finally, the free base of milobalin is salted with benzylsulfonic acid to obtain milobalin benzylsulfonic acid. This invention stereospecifically constructs a chiral cyclobutane quaternary carbon center to obtain a chiral nitro ester with a single stereoconfiguration, avoiding the chiral isomer waste generated by chiral isomer resolution, eliminating the need for chiral column separation or chiral resolution, significantly reducing production costs, and simultaneously avoiding the environmental pollution caused by residual heavy metal titanium in the product and solid waste heavy metal titanium.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a method for synthesizing 1, 1, 3, 3-tetramethylguanidine, which comprises the following steps: step 1, adding dimethylamine into a reaction flask, starting stirring, then controlling the temperature at 20-50 DEG C, introducing chlorine gas into the reaction liquid while adding hydrocyanic acid for 1-4 hours, reacting to generate dimethylamino nitrile and dimethylamine hydrochloride, and then adding the dimethylamine hydrochloride into the reaction flask to obtain dimethylamine hydrochloride; the method comprises the following steps: 1, preparing a reaction solution, 2, heating the reaction solution to carry out a condensation reaction so as to generate tetramethylguanidine hydrochloride, and 3, adding liquid caustic soda into the reaction solution to carry out alkalization so as to generate tetramethylguanidine, and sequentially carrying out dimethylamine recovery, solvent extraction, solvent concentration and rectification on the reaction solution so as to finally obtain tetramethylguanidine. The method is simple in technological process, mild in reaction condition, free of high-temperature and high-pressure operation, low in production risk and beneficial to large-scale production.

This invention belongs to the field of synthetic technology of β-aminonitriles and their derivatives, specifically relating to a method for synthesizing nitrogen-alkylated unsaturated polycyclic β-aminonitriles. Under inert gas protection, this invention uses inexpensive industrial-grade nitrile compounds and primary alcohols as raw materials, adding a base and an organorruthenium catalyst, and employs a one-pot method to achieve the ring-cloning reaction of the nitrile compounds, the dehydrogenation coupling reaction of the primary alcohol, and the reduction reaction of the carbon-nitrogen double bond to synthesize nitrogen-alkylated unsaturated polycyclic (five-membered ring, six-membered ring) β-aminonitriles. The reaction system is simple, the operation is convenient, the reaction conditions are mild, and the reaction substrates have good applicability. The obtained nitrogen-alkylated unsaturated polycyclic β-aminonitriles exhibit high yield and high chemoselectivity. Furthermore, this invention overcomes the shortcomings of limited substrate range, expensive raw materials and reagents, complex reaction systems, and lengthy synthetic steps, resulting in high economic efficiency, environmental friendliness, and simple post-reaction processing.

The application provides an electrolyte and a battery. The electrolyte comprises an electrolyte salt, a solvent, and at least one additive A as shown in formula (I): wherein at least one pair of R1 and R4 and R2 and R3 contains an amino group, and the other pair contains at least one of an amino group, a nitrile group and an isocyanate group. The electrolyte can make the battery have good cycle performance and storage performance.

The application belongs to the technical field of organic synthesis, and particularly relates to an amino nitrile compound with a remote chiral center and a preparation method and application thereof. The nickel-hydrogen catalytic asymmetric hydrogenation reaction provided by the application is realized through non-covalent pi-pi interaction between a cyano group in an olefin substrate and a chiral bisoxazoline ligand. The method not only realizes efficient and high-selectivity conversion of various olefin substrates and amine electrophilic reagents, but also is compatible with secondary alkyl amine electrophilic reagents, amide electrophilic reagents and benzisoxazole electrophilic reagents, thereby providing a reliable way for synthesizing chiral amino nitrile compounds (formula I) with a remote (beta-, gamma- and delta-) stereogenic center and various structures.

The invention provides an (S)-aminonitrile hydrochloride compound and a preparation method thereof, and belongs to the technical field of medicine synthesis and preparation, the preparation method comprises the following steps: under inert conditions, S1, mixing a compound 1, 4-dimethylaminopyridine, pyridine and a reaction solvent, and adding paratoluensulfonyl chloride for reaction to obtain a compound 2; s2, mixing the compound 2 with a reaction solvent, and adding sodium cyanide for reaction to obtain a compound 3; s3, putting a magnesium rod into a reaction bottle, and dropwise adding a methanol solution of the compound 3 at room temperature for reaction to obtain a compound 4; and S4, mixing the compound 4 with an HCl organic solvent for reaction to obtain a target compound 5, namely the (S)-aminonitrile hydrochloride compound. The (S)-aminonitrile hydrochloride compound and the preparation method thereof provided by the invention have the advantages of high conversion rate, high yield, short steps, simple operation and low cost, and are suitable for industrial production.