786 results about "Salicylaldehyde" patented technology

Described are synergistic antimicrobial-fragrance compositions including broad spectrum antimicrobial compositions containing salicylaldehyde and at least one organoleptically-compatible antimicrobial synergism cofactor substance. The weight ratio range of salicylaldehyde:synergism cofactors substance is from 1:10 up to 10:1. The cofactor substance is such that the degree of synergism of the resultant mixture is defined according to the IFF Antimicrobial Synergism Test wherein the difference between the actual and expected antimicrobial values of the mixture is greater than or equal to a multiple of (i) 0.05 and (ii) the expected antimicrobial value of the mixture. Cofactor substances include phenolics such as cresol, caravacrol and thymol; ethyl vanillin; benzyl alcohol; indol; beta-orcinol; and terpinenol-4. Microorganisms against which the synergistic compositions are effective include:Escherichia coli;Enterococcus hirae;Pseudomonas aeruginosa;Staphylococcus aureus; andSaccharomyces cerevisae.The compositions have application in all-purpose cleaning compositions, gel-type toilet rim articles, liquid-type toilet rim articles, personal shower cleaning compositions, and body and hair care products including shower gel compositions, shampoo compositions and foam bath compositions.

The invention discloses a visible and reversible fluorescent probe which comprises a cyanine fluorescent group and a benzothiazole group, and the general formula of the probe is shown in the description. The preparation method of the reversible fluorescent probe comprises the following steps: (1) dropwise adding phosphorus oxychloride into salicylaldehyde and paraformaldehyde for reaction, so as to obtain a product 1; (2) enabling the product 1 and hexamethylene-tetramine to react, so as to obtain a product 2; (3) enabling the product 2 and 2-aminobenzenethiol to react at the room temperature, so as to obtain a product 3; (4) enabling the product 3 and a compound 4 to react, so as to obtain the visible and reversible fluorescent probe. According to the ratiometric fluorescent probe provided by the invention, obvious color variation can be found out under natural light or an ultra-violet lamp, and the qualitative detection of sulfur dioxide gas can be implemented under natural light or a hand-held ultra-violet lamp, so that the operation is simple, high convenience and quickness are achieved, and the effect is remarkable; the fluorescent probe can effectively prevent interference from other impurities in samples, and is excellent in selectivity; in addition, the cumbersome pre-processing process of samples is avoided, so that the detection efficiency is high.

The invention relates to a benzothiazole derivatives metal coordination polymer based on a bridged bis-salicylaldehyde structure, characterized by having the following structure which is shown in the specification, wherein linker is CH2 or C(CH3)2, R is H+, halogen base, phenyl or biphenyl, and M is Zn2+, Be2+ or Ca2+. The benzothiazole derivatives metal coordination polymer has favorable thermal stability, good fluorescent emission performance and simple preparation method. The coordination polymer of the type can be applied to the organic electroluminescent material aspect.

The present invention relates to rhodamine 6G hydrazide salicylal azomethine, a synthesization method and an application in the content determination of cupric ions, which belong to the field of the analysis and determination of cupric ions in water sample. The molecular structural formula of the rhodamine 6G hydrazide salicylal azomethine is shown on the right, and the present invention discloses the synthesization method of the rhodamine 6G hydrazide salicylal azomethine and rhodamine 6G hydrazide salicylal azomethine solution used for the content determination of a small amount of cupric ions in water sample: 0 percent to 98.99 percent of ethanol, 99.99 percent to 1 percent of acetic acid / sodium acetate buffer solution with the pH value of 5 to 9, in which the total concentration of acetic acid is 1 to 100 millimoles per litre, 0.01 percent of N, N-dimethylformamide and 1ppm to 100ppm of rhodamine 6G hydrazide salicylal azomethine, all measured in mass percentage. By a spectrophotometer, the solution can be used for the accurate quantitative determination of 0.005ppm to 0.256ppm of cupric ions in water sample as well as the semiquantitative determination of no less than 0.075ppm of cupric ions in water sample by direct naked-eye observation on the change of colors.

The invention discloses a plant essential oil composition for fumigating and killing grain aspergillus flavus. The composition is prepared by utilizing plant or plant essential oil containing cinnamic aldehyde, citral, thymol and salicylaldehyde or by utilizing synthetic identical materials, wherein the parts by weight of the four components in the composition are respectively as follows: 5-20 parts of cinnamic aldehyde, 15-35 parts of citral, 35-60 parts of thymol and 10-35 parts of salicylaldehyde. The composition has the advantages that: the drawing materials are natural, safe and non-toxic; and the volatile essential oil components are easy to diffuse; and the gas of the volatile essential oil is used for fumigating and killing to ensure that the composition needs not be in direct contact with grains and only needs to be put at a corner of a warehouse or a closed container to play a role in efficiently killing the grain aspergillus flavus.

The invention discloses a gas-phase sustained-release mildew-resistant antistaling agent and a preparation method and application thereof. The gas-phase sustained-release mildew-resistant antistaling agent is prepared through complex formulation of microcapsules of four plant essential oils consisting of anethole, cinnaldehyde, citral and salicylaldehyde. Beta-cyclodextrin is used as a wall material to respectively encapsulate the four plant essential oils consisting of anethole, cinnaldehyde, citral and salicylaldehyde, so four plant essential oil microcapsules are obtained; then the four plant essential oil microcapsules are mixed in proportion and then are applied for mildew-resistance and preservation of grains or oil-bearing materials or for mildew-resistance and preservation of raw-food materials and packaged foods. The mildew-resistant antistaling agent inhibits mould through gas-phase fumigating effects of the essential oils and employs microcapsule technology for controlling of volatilization speeds of the essential oils, so a long-acting gas-phase mildew-resistant effect is realized without direct contact between the essential oils with grains, foodstuffs and the like; the mildew-resistant antistaling agent is especially applicable to antibiosis and mildew-resistance of grains, oil-bearing materials and packaged foods under the conditions of high temperature and high humidity, can suppress deterioration of quality of the grains, the oil-bearing materials and the packaged foods, is safe to human beings and livestock and is capable of effectively overcoming the problem of residual of a chemical fumigant.

The invention discloses a preparation method of an asymmetric N,N'-bis(salicylaldehyde)o-phenylenediamine aluminum compound LAlX and application of the compound in ring opening polymerization of lactone and lactide. The asymmetric N,N'-bis(salicylaldehyde)o-phenylenediamine aluminum compound LAlX has very obvious advantages that the raw materials are easily available, the synthetic route is simple, the product yield is high, the property is stable, a prepared product has rich and changeable structures, the catalytic performance is easy to control, and the product can meet requirements of different ring opening polymerization of lactone and lactide; and a prepared aliphatic polyester high polymer material has controllable structure and performance and can meet the requirements of industrial departments.

The invention relates to a method for preparing cyclic carbonate by reacting normal pressure carbon dioxide with epoxide. Propylene carbonate or ethylene carbonate is prepared by reaction under normal pressure carbon dioxide by taking epoxypropane or ethylene oxide as a substrate, corresponding propylene carbonate or ethylene carbonate as a solvent and Salen-Zn and tetraethyl ammonium bromide as a dual component catalyst, wherein the Salen-Zn is bissalicylaldehyde ethylenediamine-Zn, salicyladehyde cyclohexanediamine-Zn or bis-salicylaldehyde o-phenylenediamine-Zn. The method provided by the invention has the advantages that the catalyst is convenient to prepare, low in cost and less in use level; by using the product as the solvent, posttreatment is convenient; the method is low in reaction pressure, great in rate, safe to operate and suitable for scaled industrial production.

The invention provides a polymerizable salicylic aldehyde complex containing a quaternary ammonium salt in a molecular structure. The polymerizable salicylic aldehyde complex containing the quaternary ammonium salt can be used for copolymerization reaction on styrene, acrylic ester, acrylonitrile, vinyl acetate or acrylic amide to form series resin with a macromolecular side chain bonded with two sterilizing and antibacterial substances including a salicylic aldehyde complex and the quaternary ammonium salt; and the resin and inorganic ions in seawater are subjected to ion exchange reaction to sequentially release the two sterilizing and antibacterial substances including the salicylic aldehyde complex and the quaternary ammonium salt, so as to generate the effect of preventing pollution on marine organisms and the surface layer self-cleaning effect.

The invention relates to a synthetic method of a (S,S)-salenCo(II) catalyst and application of the (S,S)-salenCo(II) catalyst in split of an end epoxide compound. The filtrate of the intermediate (R,R)-cyclohexanediamine single salt of a (R,R)-salenCo(II) catalyst is used for synthesizing the (S,S)-cyclohexanediamine single salt; and the (S,S)-cyclohexanediamine single salt is further reacted with 3,5-di-tert-butyl salicylaldehyde and cobalt acetate in a single solvent so as to obtain the (S,S)-salenCo(II) catalyst. With the adoption of the method, the waste, i.e. the intermediate (R,R)-single salt of the (R,R)-salenCo(II) catalyst, is changed into wealth; the single solvent is used; the process is simple; the reaction step is short; the yield is high, the industrialization is easy to achieve; the synthesized (S,S)-salenCo(II) catalyst is activated into a (S,S)-salenCo(III) catalyst with catalytic activation by using air directly in the end epoxide compound; the mode of the (S,S)-salenCo(III) catalyst is synthesized by using the (S,S)-salenCo(II) catalyst is avoided; the splitting effect is the same as that of the method in which the (S,S)-salenCo(III) catalyst is used directly; and the obtained chirality end epoxide compound of which the e value is 99%e is obtained.

The invention discloses a synthesis method for increasing the Pd content of a metal organic framework based on Zr(IV) ions. The method comprises the following steps: performing a coordination polymerization reaction between an organic ligand (I) and ZrCl4, and performing post-synthesis modification of the product, wherein the post-synthesis modification comprises the following specific steps: enabling a coordination polymerization reaction product, 2-pyridylaldehyde or salicylaldehyde and a catalyst formic acid in a molar ratio of 1:(1-4):(0.1-0.3) to react in an organic solvent; performing centrifugal washing of the product and dispersing in an organic solvent; adding palladium nitrate in a molar ratio of 1:(0.8-1.2); after the reactions, centrifuging and drying to obtain powder; dispersing the obtained powder into water; adding sodium borohydride in a molar ratio of 1:(0.5-1.5); and after the reactions, centrifuging, washing and drying to obtain the product. In the invention, the synthesized compound is an organic-inorganic composite supermolecular material and has a metal organic framework which is easy to operate and low in cost and has nanoscale particle size; and the compound has very high efficiency when being used as a catalytic material for benzyl alcohol oxidation and benzaldehyde condensation.

The present invention relates to a chitosan derivative, in the concrete, it is a carboxymethyl chitosan Xifu alkali derivative and it spreparation method. Said invention also provides its chemical structure formula. Said preparation method is characterized by that it ases the chitosan with different molecular weights and makes it be reacted with chloracetic acid to obtain carboxymethyl chitosan, then makes it be reacted with substituted salicylaldehyde so as to obtain the derivative of chitosan with different molecular weights. Said invention has good water-solubility, and good bacteria-inhibiting activity, can be used in the fields of medicine or agriculture, etc.

The invention discloses a method for synthesizing chiral sulfonamide. In the method, chiral thiosulfinate is taken as a raw material and reduced with liquid ammonia containing lithium amide to obtain the chiral sulfonamide, and a reaction formula is as above, wherein, R is one of C1-C10 alkyl, phenyl, p-cresyl, o-cresyl, metal-cresyl, p-ethyl benzyl, p-tertiary-butyl phenyl, p-acetyl phenyl, o-acetyl phenyl and naphthyl. The method sequentially comprises the following steps: preparing the lithium amide; dropwise adding the lithium amide to chiral thiosulfinate solution and stirring for reaction; and adding ice to obtained mixture after the reaction, extracting, combining organic phases and eliminating solvents, and crystallizing to obtain the chiral sulfonamide. The method has the advantages that synthesis cost is reduced by an oxidation method in the presence of a chiral catalyst; a ligand is a condensation product of cheap and available chloromycetin derivative and salicylaldehyde derivative; and reaction steps are less, the reaction conditions are mild and post-treatment is simple.

The present invention relates to a nitrogen-oxynickel coordination compound catalysis system, and said catalysis sytem is formed from main catalyst bis(substituted salicylalimine) nickel (II) coordination compound and cocatalyst methyl aluminium oxygen alkyl (MAO). Said invention is simple in process, its raw materials are easily available, its cost is low and its catalytic activity is high (maximum is up to 1.05X10 to the power 9 g PNB/(molNi.h.atm)), and by changing reaction condition the activity of catalyst (1X10 to the power 4-1.05X10 to the power 9g PNB/(mol Ni.h.atm) and obtained polybornylene yield (10%-100%), molecular weight (1X10 to the power 5-3.5X10 to the power 6) and molecular weight, distribution (1.3-25) can be regulated in large range.

The invention discloses a method for preparing a single-molecular magnet [Dy2(saph)2(NO3)2(CH3OH)4] and relates to a method for preparing a single-molecular magnet. The invention aims at solving the problems that the synthetic method of the conventional rare earth complex single-molecular magnet is low in yield and the synthetic method of the complex is complicated. The method comprises the following steps: dissolving o-aminophenol salicylaldehyde in acetonitrile, thereby obtaining a solution A; dissolving dysprosium nitrate in methanol, thereby obtaining a solution B; mixing the solution A and the solution B, adding a triethylamine solution into the mixed solution, stirring under room temperature condition, thereby obtaining a preform; and volatilizing a solvent out of the preform, thereby obtaining the complex. The [Dy2(saph)2(NO3)2(CH3OH)4] prepared by the method disclosed by the invention is a single-molecular magnet with good ferromagnetic properties, the yield of the preparation method disclosed by the invention is high and is over 52.84 percent, and the synthetic method of the single-molecular magnet is simple and high in repeatability. The invention belongs to the field of preparation of single-molecular magnets.

The invention discloses a spice composition for inhibiting food spoilage microorganisms, which consists of the following raw materials in percentage by weight: 30 to 50 percent of cinnamic aldehyde, 20 to 45 percent of eugenol, 20 to 40 percent of thymol, and 5 to 25 percent of salicylaldehyde. The eugenol, the cinnamic aldehyde, the thymol and the salicylaldehyde come from essential oil or natural-identical edible spices which are rich in the spices; components of the spice composition can be directly mixed, dissolved evenly and then used according to the proportion, or are dissolved and diluted by adopting solvents such as water, edible alcohol, propanediol, and grease to use, or are dispersed evenly by adopting other carriers such as dextrine and starch to use; the material selection of the spice composition is natural, safe and nontoxic; the co-synergistic action among spice ingredients ensures that the composition is highly-efficient and broad-spectrum to inhibit the food spoilage microorganisms; the spice composition has small usage amount, and can not apparently affect the flavor of food; and the spice composition is added into various food to effectively inhibit the growth and propagation of microorganisms which cause the food to spoil and deteriorate, thereby preventing spoilage of the food and keeping the food fresh.

The invention discloses a catalyst precursor and its preparation method, a catalyst and its application, and an ethylene polymerization method. The catalyst precursor is a bimetallic catalyst precursor which has an open structure shown as a formula I and is based on a salicylaldehyde imine ligand, the preparation method of the catalyst precursor is as follows: under complexation reaction conditions, contacting a compound having a structure shown as a formula IV with a compound with a molecular structure general formula of MCl4 (THF) 2 in an organic solvent; the catalyst provided by the invention comprises the catalyst precursor and alkyl aluminoxane; the invention also provides the application of the catalyst in olefin polymerization, the invention also provides the ethylene polymerization method which is as follows: under olefin polymerization conditions, in the presence of an organic solvent, contacting ethylene with the catalyst precursor and the alkyl aluminoxane for polymerization. The preparation method of the catalyst precursor is simple, and the catalyst is high in catalytic efficiency. The formula I and the formula IV are shown in the specification.

The invention discloses a production technology for synthetizing salbutamol sulphate, and relates to the field of chemical synthesis. The production technology comprises the following steps: firstly, performing an Friedel-crafts acylation reaction on salicylal to obtain a chemical compound 3, performing a substitution reaction of tert-butylamine, protecting dihydroxy by propylidene under the catalysis of concentrated sulfuric acid through the reduction of potassium borohydride or sodium borohydride, then performing extraction for desalting, and generating a hydrolysis reaction under acid conditions to obtain sulphuric acid salbutamol. The production technology disclosed by the invention is easy to control and operate, raw materials are simple and easy to obtain, the total mol yield is as high as 40%, the product purity is as high as 99.5%, and the product cost is low.

The invention provides a method of surface functionalization of an aramatic polyamides reverse osmosis thin film composite membrane, which is particularly characterized in that (1) the method that salicylaldehyde and a quaternary ammonium salt functional group are 'cultivated' on the surface of the aramatic polyamides reverse osmosis thin film composite membrane in a dot matrix manner is simple, convenient and easy to operate, and the 'cultivation' density can be subjected to chemical regulation according to the requirement; (2) the uniformity of the surface which is modified by the quaternary ammonium salt and salicylaldehyde functional groups in a dot matrix manner of the aramatic polyamides reverse osmosis thin film composite membrane is high, and the cellular structure and permeability of the aramatic polyamides reverse osmosis thin film composite membrane are not changed; (3) the surface of the aramatic polyamides reverse osmosis thin film composite membrane is simplified by utilizing quaternary ammonium salt and salicylaldehyde functional groups, so that the hydrophilia of the aramatic polyamides reverse osmosis thin film composite membrane can be improved, the performances of antibiosis and sterilization are improved, and the aramatic polyamides reverse osmosis thin film composite membrane is protected from chemistry damage.

The invention relates to a method for preparing double salicylaldehyde imine vanadium olefin polymerization catalyst and application of the catalyst in catalyzing ethylene polymerization. Under the catalyzing effect of formic acid, condensation reaction of the salicylaldehyde or derivatives of the salicylaldehyde and aniline or derivatives of the aniline is carried out in methanol solution, and skiff base is obtained. Under the condition of no water and no oxygen and under the effect of excess triethylamine, the double salicylaldehyde imine vanadium olefin polymerization catalyst of the invention is obtained by complexation reaction of the skiff base and vanadium trichloride with an equivalent weight. Under the effect of diethyl aluminium chloride, the catalyst of the invention can be used for catalyzing ethylene polymerization. The invention has the advantages of easy preparation, high catalyzing activity and good thermal stability.

The invention relates to a salicyldenaminato schiff base metal complex catalyst and a preparation method thereof. The catalyst comprises the following components: (A) a salicyldenaminato schiff base ligand, (B) a transition metal compound which can be coordinated with the salicyldenaminato schiff base ligand, and (C) alkali metal or alkaline-earth metal salt. The catalyst is used for catalyzing self-polymerization of diisocyanate in order to prepare a polyisocyanate curing agent, the problem of higher content of high polymers in the curing agent which is prepared by a direct synthesis method is solved, and at the same time products with excellent molecular weight distribution are obtained, and free monomers in the products are lower than 0.3wt%.

The invention provides a synthetic method of an antiarrhythmic medicament amiodarone hydrochloride described in the specification, and belongs to the field of medicament synthesis. The synthetic method comprises the following steps: using salicylaldehyde as a starting material to react with 2-halogenated hydrocarbyl hexanoate, p-methoxybenzoyl chloride, iodine and 2-diethylaminoethyl chloride hydrochloride in sequence in the presence of a catalyst to gradually obtain 2-butylbenzofuran, 2-butyl-3-(4-hydroxyl benzoyl) benzofuran, 2-butyl-3-(3,5-diiodine-4-hydroxyl benzoyl) benzofuran and (2-butyl-3-benzofuryl)[4-[2-(diethylamino) ethyoxyl]3,5-diiodine pehyl] ketone hydrochloride, namely amiodarone hydrochloride. The synthetic method disclosed by the invention is simple in process, convenient to operate, good in safety performance and high in yield.

The invention discloses a catalyst for catalyzing thioether oxidation as well as a preparation method and application of the catalyst. The preparation method comprises the following steps: synthesizing a bromated Salen ligand from bromosalicylaldehyde and ethanediamine by virtue of Schiff base condensation at first; and then adding a divalent metal salt to coordinate with the Salen ligand, and introducing oxygen for oxidation after complete reaction, thereby obtaining the catalyst for catalyzing thioether oxidation. The catalyst can be used for catalyzing the thioether oxidation of methyl phenyl sulfide, ethyl phenyl sulfide, n-butyl sulfide, dibenzyl sulfide and the like with relatively high activity and relatively high selectivity; and a sulfoxide product is generated when an axial ligand is added, and a sulfone product is generated when the axial ligand is not added.

The invention relates to a phenanthrene imidazole reversible fluorescence probe for Cu<2+> detection, and a preparation method and application thereof, relates to the fluorescence probe for the Cu<2+> detection, and the preparation method and the application thereof, and aims to solve the technical problems of an existing fluorescence molecular probe is poor in Cu<2+> detection reversibility and easy to be interfered by other metal ions. The reversible fluorescence probe provided by the invention has a structural formula as shown in the figure. The preparation method comprises the steps of (1) using phenanthrenequinone, o-nitrobenzaldehyde and ammonium acetate for synthesizing an intermediate compound I; (2) using the intermediate compound I, raney nickel, ethanol and hydrazine hydrate for synthesizing an intermediate compound II; (3) reacting the the intermediate compound II and salicylaldehyde, and obtaining the phenanthrene imidazole reversible fluorescence probe for the Cu<2+> detection. During detection, after the reversible fluorescence probe is acted with Cu<2+>, the fluorescence intensity is quenched; after Cr<3+> is added, the fluorescence intensity is recovered and can be used for detecting pollution of the Cu<2+> and the Cr<3+> in water.

The invention relates to a preparation method of trimesoyl hydrazone series derivatives and application of the trimesoyl hydrazone series derivatives as probe molecules for identifying fluorine ions. The preparation method comprises the steps of dissolving trimesic acid, concentrated sulfuric acid and ethanol according to the mass ratio of 1:0.25:20 into ethanol, and refluxing for 48 hours to obtain a white product trimesic acid ethyl ester; dissolving trimesic acid ethyl ester, hydrazine hydrate and methanol according to the mass ratio of 1:0.5:5 into methanol, cooling reaction liquid to room temperature when points of raw materials do not exist on a thin-layer plate, and precipitating a large amount of white solid trimesoyl hydrazine; dissolving trimesoyl hydrazine and salicylaldehyde derivatives according to the molar ratio of 1:4.5 into a proper amount of methanol, adding p-toluenesulfonic acid serving as a catalyst, refluxing for 12 hours, and then cooling to room temperature to obtain fluorescent probe molecules.