14 results about "Allylic alcohol" patented technology

The present invention relates to the field of organic synthesis, and more particularly to a method for the oxidation of allylic alcohols to α,β-unsaturated carbonyl compounds in the presence of a zirconium catalyst and a hydrogen acceptor.

The invention belongs to the technical field of organic synthesis, and discloses a preparation method of a 3-alkylindole compound, which comprises the following steps: in an inert atmosphere, reacting a reaction solution mixed with an indole compound, an allyl alcohol compound, a catalyst Mn-1 and alkali at 110-150 DEG C for 12-24 hours to obtain the 3-alkylindole compound. Mn (CO) 5Br is used as a transition metal and complexed with a PNP pincerlike manganese complex to obtain the Mn-1 catalyst, the 3-alkylindole compound is obtained under the catalysis of the catalyst, allyl alcohol can be aryl allyl alcohol or aliphatic allyl alcohol, a substituent group on an indole ring can be an electron withdrawing group, the application range of a substrate is wide, meanwhile, the selection range of alkali or a solvent is wide, and the 3-alkylindole compound is suitable for industrial production. The method has the advantages of high atom economy, environment friendliness, high safety and the like.

The invention discloses a preparation method of an anti-static antibacterial polyester fiber, and relates to the technical field of functional fiber materials. When the anti-static antibacterial polyester fiber is prepared, graphene oxide is activated and then grafted with 2-amino-4, 6-dichloropyrimidine, and then the grafted graphene oxide reacts with allyl alcohol to prepare double-bond functionalized pyrimidine modified graphene oxide; the preparation method comprises the following steps: reacting maleic acid with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to prepare a phosphorus-containing dicarboxylic acid flame retardant; ethylene glycol, terephthalic acid, maleic anhydride and a phosphorus-containing dicarboxylic acid flame retardant are subjected to copolycondensation to prepare double-bond functionalized flame-retardant modified polyester; blending and crosslinking the double-bond functionalized pyrimidine modified graphene oxide and the double-bond functionalized flame-retardant modified polyester, and performing melt spinning to obtain modified polyester fibers; finally, the anti-static antibacterial polyester fiber is prepared through vitamin C reduction treatment and silver nitrate loading. The polyester fiber prepared by the invention has antistatic property, antibacterial property and flame retardant property.

The present invention discloses a method for synthesizing a chiral 1,4-dienylpyrazole derivative compound with high chemical, regio- and enantioselectivity. Specifically, it is a method for preparing a chiral 1,4-dienylpyrazole derivative compound by combining an iridium catalyst and a chiral ligand to catalyze a substitution reaction between racemic 1,4-dienyl allyl alcohol and a pyrazole derivative compound, and the method belongs to the field of organic synthesis. The specific operation steps are: under argon protection, an iridium catalyst and a chiral ligand are added to a reaction tube, followed by adding 1,4-dienyl allyl alcohol, a pyrazole derivative compound and an additive, and then reacting at 0°C. After the reaction is complete, the reaction is quenched and purified to obtain a chiral 1,4-dienylpyrazole derivative compound. The method has good substrate applicability and mild reaction conditions. It has the advantages of high chemical selectivity, regioselectivity and enantioselectivity.

The present invention relates to the field of organic synthesis and more specifically it concerns a process for the oxidation of a non-allylic alcohol into a carbonyl compound in a presence of zirconium catalyst and a hydrogen acceptor.

The application provides a solid core-shell catalyst and a preparation method and application thereof, and belongs to the technical field of organic synthesis. The solid core-shell catalyst provided by the application has the following general formula: xM@yShell, wherein M represents a transition metal, Shell represents an oxide shell layer, x is 20-50wt%, and y is 50-80wt% in terms of mass fraction. The solid core-shell catalyst provided by the application is simple to prepare, stable in structure, low in storage requirement, and has good catalytic activity and stability, and can be effectively used in isomerization of allyl alcohol.

The present invention relates to the field of organic synthesis, and more specifically to a method for the rearrangement of epoxides to allylic alcohols in the presence of a zinc catalyst and two aminophenols.

The invention discloses a molybdenum-quinoline complex, a preparation method and a method for preparing a coupling product through allyl alcohol deoxidation coupling. The molybdenum-quinoline complex is prepared by mixing quinoline with substituent groups and a molybdenum source in a solvent according to a certain proportion. The complex is used for efficiently catalyzing deoxidation coupling of a compound with an allyl alcohol structure, harmful reagents such as halogen are not needed, the reaction safety is greatly improved, and the production cost is reduced.

The invention belongs to the technical field of organic synthesis. The invention particularly relates to a preparation method of homoallylic alcohol. Aiming at the defect that only an allyl Grignard reagent can be used in a ring-opening reaction of ternary epoxy and an allyl nucleophilic reagent, the invention provides a Suzuki type ring-opening coupling reaction of ternary epoxy and an allyl boron reagent, which is efficient, convenient and high in compatibility. According to the method, an epoxy compound and allyl boron ester are taken as raw materials, under the conditions that cuprous iodide is taken as a catalyst, 4, 7-diphenyl-1, 10-phenanthroline is taken as a ligand and lithium tert-butoxide is taken as alkali, under the promotion of potassium iodide, reaction is carried out in an N, N-dimethylformamide solvent according to the following reaction formula at 70 DEG C, and the homoallylic alcohol compound is obtained. The method has the advantages of mild reaction conditions, high yield, few side reactions, convenient operation, good substrate compatibility, stable allyl boron ester raw material, easy storage, and convenient charging of the reaction system.

The present invention relates to the synthesis of specific allylic alcohols having terminal carboxyl groups, based on an ethynylation step and a hydrogenation step in the presence of a Lindlar catalyst. These allylic alcohols are particularly useful to provide a route to the synthesis of isophytol or tocopherols having terminal carboxyl groups by very few reaction steps.

The application belongs to the technical field of organic synthesis, and discloses a method for synthesizing alkyl borate compounds by taking allyl alcohol as a substrate, which comprises the following steps: taking allyl alcohol shown in formula I and pinacol diboron as substrates, taking monovalent copper salt as a catalyst, and reacting in an organic solvent under the action of a base, a proton source and a ligand to obtain alkyl borate compounds shown in formula II according to the following reaction formula. In the application, monovalent copper is used to catalyze the coupling of pinacol diboron and allyl alcohol to form alkyl borate, the substrate range is widened, the use of noble metals and strong reducing agents is avoided, no excess metal waste is generated, the green chemistry concept is met, the reaction steps are significantly shortened, and the cost can be reduced.

Disclosed herein is a process for the oxidation of an allylic alcohol into an alpha,beta-unsaturated carbonyl compound in a presence of zirconium catalyst and a hydrogen acceptor.

The invention provides an immobilized BF3 catalyst, a preparation method thereof and a synthesis method of allyl glycidyl ether, and belongs to the technical field of supported catalysts. The synthesis method comprises the following steps: carrying out a ring-opening reaction on allyl alcohol and epoxy chloropropane to obtain an allyl alcohol chloride intermediate, and then carrying out a ring-closing reaction on the allyl alcohol chloride intermediate and sodium hydroxide to obtain the allyl glycidyl ether. The catalyst used in the ring-opening reaction is ion exchange resin loaded boron trifluoride, the active component trifluoroboric acid of the catalyst is not easy to lose through ion exchange resin immobilization, and the catalyst has relatively high specific surface area and stability and can be recycled. The solid-phase catalyst is friendly to equipment and simple in reaction post-treatment, and can provide a protonic acid center besides a lewis acid center provided by boron trifluoride, so that the activity and selectivity of the reaction are improved.

The invention provides a process method for continuously preparing allyl alcohol from epoxypropane, and relates to the technical field of chemical synthesis. According to the process method, a feeding unit, a reaction unit, a catalyst recovery unit, a solvent recovery unit, a catalyst preparation unit, an allyl alcohol refining unit, an acquisition unit and a control unit are included, the purity and flow of a solvent output from the top of a solvent refining tower are acquired and transmitted to the control unit in real time, and according to data of the acquisition unit, the allylic alcohol is obtained. The control unit is used for controlling the feeding flow of auxiliary gas in the feeding unit and the feeding flow of a catalyst supplementing pipe in the catalyst recovery unit; the catalyst and solvent recovery unit and the solvent preparation unit are arranged, and the flow of the auxiliary gas in the feeding unit and the supplement amount of the catalyst are controlled according to the purity and flow of the solvent output by the solvent recovery unit, so that the retention time of the raw material in the reaction unit can be effectively shortened, and the generation of tar byproducts is reduced; the selectivity and stability of the catalyst are remarkably improved, and the loss rate of the solvent is reduced.