66 results about "Phosphorine" patented technology

Phosphinines of formula (I) can be combined with metal salts to prepare hydroformylation catalysts. The phosphinine complexes have two phosphorus centers that may be substituted with a variety of hetero atoms or alkyl substituents to modify the ligand characteristics of the phosphinine. Phosphinine metal complexes are employed under normal hydroformylation reaction conditions. The preparatory routes to the phosphinine ligands of formula (I) allow for their convenient synthesis.

The invention discloses an indole framework based center chirality sulfonamides monophosphine ligand and a preparation method thereof. The monophosphine ligand adopts the structure of a formula I, and is prepared through adopting 2-halogenated indole formaldehyde (ketone) to obtain 2-disubstituted phosphine indole formaldehyde (ketone), and taking the 2-disubstituted phosphine indole formaldehyde (ketone) and chirality sulfonamide as raw materials to react with a nucleophilic reagent or a reducing reagent to prepare the compound of the formula I; optical pure compounds of four configurations of (R,R), (R,S), (S,S) and (S,R) can be obtained conveniently through adopting different chirality sulfonamides and different nucleophilic reagents. The monophosphine ligand is simple in framework, convenient to synthesize, easy to transform, can be applied to various metal catalyzed asymmetric reactions as well as the tertiary phosphine catalyzed reaction, and has good application prospect.(The formula I is shown in the description).

The invention discloses phosphine ligand compounds based on a tetramethylspirobiindane skeleton, an intermediate of the compounds, and a preparation method and application of the compounds. The phosphine ligand compounds are compounds having a structure represented by a general formula I or a general formula II shown in the description, or an enantiomer, a despinner or a diastereomer of the compounds. The phosphine ligands are obtained by a preparation route using a cheap and easily-available tetramethylspirobiindanediol as a raw material, and compounds represented by a general formula III shown in the description as a key intermediate. The method disclosed by the invention develops the novel phosphine ligands, the phosphine ligands can be used for catalyzing organic reactions, in particular used as chiral phosphine ligands to be widely used in a plurality of asymmetric catalytic reactions such as asymmetric hydrogenation and asymmetric allyl alkylation, and have economical practicability and industrial application prospects.

The disclosure is directed to: (a) phosphacycle ligands; (b) methods of using such phosphacycle ligands in bond forming reactions; and (c) methods of preparing phosphacycle ligands.

The invention relates to a method of synthesizing tricyclic decane dimethyl carbinol. The method comprises the following steps of: preparing a cobaltosic oxide-supported nanogold catalyst, and modifying the obtained catalyst by a phosphine ligand; and catalyzing dicyclopentadiene to synthesize tricyclic decane dimethyl carbinol by a one-step method under the relatively low temperature and pressure, wherein the conversion rate of the dicyclopentadiene (DCPD) by the method is 99% or higher, and the selectivity of the tricyclic decane dimethyl carbinol can reach 80% or higher.

The gaseous chemical compound, carbonyl sulphide, has hitherto been unknown as a fumigant for the control of insects and mites. Experiments have shown conclusively that carbonyl sulphide can be used as such a fumigant, with fumigation properties comparable to those of phosphine and methyl bromide. The effectiveness of carbonyl sulphide against insects (both adult and immature stages), mites, termites and moulds is demonstrated. In addition, its low absorbtion by grain, lower flammability than phosphine, lack of influence on seed germination, and apparent environmental safety make carbonyl sulphide particularly beneficial as a fumigant of stored grain. It may also be used to fumigate other stored produce (including perishable foodstuff), soil, timber and spaces (such as buildings) and any material likely to be infested by insects or mites, or act as a source of such infestation.

The invention relates to a new type chirality spiro Hannane and the key midbody spiro diphenol, the composing method and application of ruthenium complex acetate of said chirality spiro Hannane in Alpha, Beta-unsaturated carboxylic acid. The compound can be used as chirality part for asymmetrical catalysis hydrogenating reaction-especialy the Alpha, Beta-unsaturated carboxylic acid has high stereoselectivity, the highest ee value reach 98 percent and has high reaction activity and high transform quantity (S/C=10000).

A synthesis method of alpha,alpha-difluoromethylene vinyl phosphonate having a structure represented by the formula I and having high position and high stereoselectivity is characterized by comprising the steps: with alpha,alpha-difluoromethylene-beta-allene phosphonate as a raw material, adding aryl or aromatic vinyl boric acid RB(OH)2, and under the action of a catalyst palladium acetate Pd(OAc)2 and a phosphine ligand, undergoing an aryl/vinyl hydrogenation reaction, to obtain alpha,alpha-difluoromethylene vinyl phosphonate having the E structure, wherein a substituent R is aromatic vinyl, aryl or heteroaryl. The synthesis method is simple and convenient, mild in conditions, and high in productive rate, the yield of the target fluorine-containing vinyl phosphonate can reach 71%-94%, and the E structure has high selectivity.

The invention discloses a chiral diphosphine ligand based on a ferrocene framework and application thereof to asymmetric hydrogenation and correlated reactions. The novel chiral diphosphine ligand possesses a structure shown as a general formula I. In the general formula I, R1 is methyl, phenyl, t-butyl, hydroxyl and the like, R2 is ethyl, phenyl, cyclohexyl, p-mehtylphenyl, t-butyl, 3,5-dimethylphenyl, 3,5-di-t-butylphenyl, 3,5-di-t-butyl-4-methoxyphenyl, 2,6-dimethoxyphenyl, 2,6-dimethylphenyl and anthryl, and the bridging group between two phosphorus atoms is phenyl, naphthyl, alkyl and the like. Also, the invention discloses synthesis of the novel chiral diphosphine ligand and application of the chiral diphosphine ligand to prepare chiral medicines ibuprofen, naproxen and the like.

The invention relates to a method for synthesizing m-cresol by 3-methylcyclohexenone dehydrogenation. With 3-methylcyclohexenone as a reaction material, under the condition that reaction temperature is 393K to 423K and pressure is normal pressure, multifunctional phosphine-and-nitrogen-containing polymer-supported palladium-based catalyst Pd/POL-2V-P,N is adopted to catalyze 3-methylcyclohexenonedehydrogenation, so that m-cresol is synthesized. With porous phosphine-and-nitrogen-containing polymer as a carrier, the method adopts an impregnation method to complex and support palladium to prepare the porous polymer-supported palladium-based catalyst. The method applies the supported palladium-based catalyst Pd/POL-2V-P,N to dehydrogenate 3-methylcyclohexenone on a slurry bed to prepare m-cresol. Under the conditions of normal pressure and no oxygen, high activity is shown, and the catalyst is easy to separate and recycle.

A method is provided to couple an aryl halide to an alkyne comprising reacting a compound of the formula ArX, wherein Ar is a substituted or unsubstituted aryl group and X is I or Br, with a compound of the formula HC≡C—R¹ wherein R¹ is a substituted or unsubstituted organic group, in the presence of an effective amount of a phosphine-free, oxime-free palladium catalyst; (C₁-C₄)alkyl N⁺(⁻OAc) or an alkali metal carbonate, to yield a compound of the formula Ar—C≡C—R¹, wherein the reaction is carried out in the absence of an organic amine or copper(I).

The invention relates the synthesis of C2-bis ruthenium doublephosphine ligand. The ligand can be used in metallic catalysis asymmetric reaction, and the ligand has the good reaction active and stereoselectivity. The R is -Me, -Et.

The invention discloses a preparation method of symmetric 1,4-disubstituted-1,3-diacetylene. Homocoupling of alkyne is carried out in a solvent in the presence of an alkali with silver as a catalyst to obtain the symmetric 1,4-disubstituted-1,3-diacetylene. The method has the advantages of simple operation, obtaining of corresponding diacetylene compounds at room temperature without air isolation or addition of a phosphine ligand or a precious metal, simple post-treatment, and very good practicality and economic values.

The present invention provides a process for efficiently producing an alkylated aromatic compound in good yield, by a cross-coupling reaction between an alkyl halide and an aromatic magnesium reagent. A process for producing an aromatic compound represented by Formula (1):

R—Ar′  (1)

• • wherein R is a hydrocarbon group, and Ar′ is an aryl group;
  • the process comprising:
  • reacting a compound represented by Formula (2):

R—X  (2)

• • wherein X is a halogen atom, and R is as defined above, with a magnesium reagent represented by Formula (3):

Ar′—MgY  (3)

• • wherein Y is a halogen atom, and Ar′ is as defined above, in the presence of a catalyst for cross-coupling reactions comprising an iron compound and a bisphosphine compound represented by Formula (4):

The invention relates to a water-soluble cyclic palladium hydrate mono-phosphine salt compound, and a preparation method and an application thereof. The compound has a formula shown in the specification, wherein L is a sulfo group-containing mono-phosphine ligand, a phosphine atom and a palladium coordinate; the hydroxy benzyl groups can be singly or simultaneously located on a pyridine ring and a benzene ring; and the hydroxy benzyl groups can be located on any positions on the two rings. According to the invention, the cyclic palladium dimer containing the hydroxy benzyl groups and the sodium salt of the sulfo group-containing mono-phosphine ligand react with each other in an acetone solvent, so that the corresponding water-soluble cyclic palladium hydrate mono-phosphine salt compound can be conveniently synthesized. When the compound is used as a metal catalyst, the dosage of the catalyst is small; clean water used as the solvent and low-cost weak base can be utilized to effectively catalyze the coupled reaction between aryl halide and pyrazole, so as to synthesize and prepare 1-aryl pyrazole. The method has the advantages that the scope of the reaction substrate is wide, the reaction condition is mild, the yield is high, the method is economical and efficient and the method has an important application value.

The present invention provides a phosphine-ionic liquid organic porous copolymer-containing heterogeneous catalyst, a preparation method and applications thereof, wherein an olefin-functionalized organic phosphine ligand and an olefin-functionalized ion liquid are co-polymerized to form a phosphine-ionic liquid organic porous copolymer, a Lewis acid metal salt is added or is not added, and when the Lewis acid metal salt is added, the metal ions in the metal salt and the naked phosphine in the organic porous copolymer form a coordination bond so as to finally obtain the heterogeneous catalyst.According to the present invention, the catalyst can be used in fixed beds, slurry beds, tank reactors, trickle beds and other reactors; with the application of the catalyst of the present invention in the coupling reaction process of epoxy compounds and carbon dioxide, the respective advantages of the ion liquid (as the ring-opening nucleophilic reagent) and the phosphine-metal coordination compound (activated epoxy compound) are integrated; and by adjusting and changing the copolymerization monomer proportion and the metal loading amount, the obtained catalyst has the double advantages of extremely high activity and high stability.

This invention discloses a method for synthesizing planar chiral cycloaralkyl phosphine compound and its application. The chirality of the compound is derived from the planar chirality of cycloaralkyl framework. The method comprises: deriving from [2.2] dicycloaralkyl to obtain the compound, performing chiral resolution with chiral annulate Pd, separating the diastereoisomers by column chromatography to obtain planar chiral cycloaralkyl phosphine compound, and recovering annulate Pd. The compound, when used as catalyst in allyl amination and alkylation, has high reactivity and high antipode selectivity. Besides, the compound can be used as a ligand in asymmetric catalytic hydrogenation and aldehyde allylation. The compound has such advantages as high stability and simple synthesis.

The invention relates to a preparation method of phosphine ligand and a method for the phosphine ligand to catalyze and synthetize biaryl and derivatives thereof. The preparation method of the phosphine ligand comprises the following steps: 2-diphenyl phosphono benzaldehyde is used to react with a Grignard reagent, and the phosphine ligand is acquired; X in the Grignard reagent is halogen, and R is C1-C8 alkyl, aryl or substituted aryl; wherein, the substituted aryl is that one or multiple positions in number 2 to 6 positions of aromatic ring are substituted; and substituent is one or varieties in fluorine, chlorine, phenyl, C1-C8 alkyl and C1-C8 alkoxy. The invention discloses the method of using the phosphine ligand to jointly catalyze and synthetize the biaryl and the derivatives thereof with a nickel catalyst. The invention uses high catalytic activity of the phosphine ligand, TON is usually higher than 2500, and the phosphine ligand is easy to be prepared and suitable for industrial production. The phosphine ligand can be produced by the Grignard reagent and 2-diphenyl phosphono-containing benzaldehyde in the field without separation, and directly catalyze a coupling reaction; and furthermore, the reactivity of the phosphine ligand is not obviously reduced.

The invention discloses a synthetic method of indol norborneol alkanes and a derivative thereof. The indol norborneol alkanes and the derivative thereof are shown as formula I in the description structurally. The synthetic method comprises the following steps: firstly taking an indol compound as a raw material, under the alkaline condition of sodium hydroxide, generating 3-iodine-N-acetyl indole or a derivative compound thereof through a reaction of indole or substituted indole and iodine and acetyl chloride, then under the condition of alkaline cesium carbonate in the 3-iodine-N-acetyl indole or the derivative compound therefore, using 1,4-dioxane as a solvent, using palladium acetate as a catalyst, using tri(2-furyl) phosphine as a ligand, and carrying out a heating reaction with norbornene to generate the indol norborneol alkanes and the derivative thereof. The preparation method is mild in condition and simple in operation, has relatively high atom economy, and the synthesized indol norborneol alkanes and derivative thereof are of relatively high potential value and wide application prospect in the field of medicinal chemistry.

The invention discloses a method for promoting CuCl to catalyze Sonogashira cross-coupling reaction by a diindolylmethane derivative. According to the method, by taking the diindolylmethane derivative which are stable in water and air and are cheap and are easily available as a ligand, CuCl is promoted to catalyze Sonogashira cross-coupling reaction of aryl halide and terminal alkyne, so that not only is the use level of CuCl reduced, but also a conventional phosphine ligand needs not to be used. The method disclosed by the invention has good primer applicability, is suitable for aryl alkyne and alkyl terminal alkyne, and is high in yield of target products. The method is an efficient, low-consumption and safe Sonogashira cross-coupling reaction system which is wide in applicability and can be widely applied to constructing Csp-Csp2 bonds.

The invention discloses a bulky electron-rich phosphine ligand compound and a preparation method thereof. The structural formula of the phosphine ligand is shown in formula I; wherein, R represents an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group or an aryl group substituted by an alkane. The method for preparing the compound of formula I comprises the following steps: reacting the compound shown in formula II with the compound shown in formula III at -90°C to -60°C for 2-5h, and then reacting at room temperature for 5-15 hours, namely have to. The lone electron pair on the methoxyl oxygen in the large-volume thiophene-containing ligand synthesized by the present invention can increase the electron cloud density of the molecule, which is beneficial to stabilizing the Pd intermediate in the reaction process, preventing cyclization, and increasing steric hindrance. Improve catalyst life. In addition, the thiophene ring is a group with a stronger electron supply than aryl or alkyl, which is beneficial to increase the electron cloud density on the phosphine and improve the activity of the ligand. The ligand of the present invention is coordinated with the palladium catalyst and then applied to Suzuki coupling or polymerization reaction to synthesize photoelectric polymer materials with high molecular weight and high yield.