- METHOD FOR PRODUCING ALKENYLPHOSPHORUS COMPOUND
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PROBLEM TO BE SOLVED: To provide a method for producing an alkenylphosphorus compound. SOLUTION: According to a method for producing alkenylphosphorus compounds, a specific phosphorus compound and a specific alkynyl compound are reacted in the presence of a specific resin-carrying transition metal complex to produce a specific alkenylphosphorus compound. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2021,JPOandINPIT
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Paragraph 0068-0074
(2021/06/04)
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- Method for synthesizing allyl phosphonic acid derivative (by machine translation)
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The invention mainly solves the problems, in the prior art that the catalyst cannot be recycled and acetylene pressure is high, and the method, comprises the following reaction, in the presence of a catalyst, wherein the catalyst comprises a cerium oxide and a palladium element, supported on a cerium oxide, and the technical problem, can be used in industrial production, of vinyl phosphonic acid esters better. (by machine translation)
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Paragraph 0041-0145
(2020/05/14)
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- METHOD FOR PRODUCING ALKENYL PHOSPHORUS COMPOUND
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Provided is a method for producing an alkenyl phosphorus compound which can produce an alkenyl phosphorus compound efficiently even with a smaller amount of a catalyst used than that used conventionally, and further which can maintain catalytic activity to produce an alkenyl phosphorus compound in high yield even at a larger reaction scale, and which can also be applied to quantity synthesis at an industrial scale using a conventional batch reactor or continuous reactor. A method for producing an alkenyl phosphorus compound, comprising: a step of reacting a compound represented by the following formula (1): [In formula (1), R1 represents OR3 or R3, R2 represents OR4 or R4, and R3 and R4 represent, for example, each independently a substituted or unsubstituted alkyl group.] with a compound represented by the following formula (2): [in-line-formulae]R5—C≡CH??(2)[/in-line-formulae][In formula (2), R5 represents, for example, a hydrogen atom, or a substituted or unsubstituted alkyl group.]to produce the phosphorus alkenyl compound presented by at least any of the following formulas (3a) or (3b): [In formulas (3a) and (3b), R1 and R2 have the same meaning as defined in formula (1), and R5 has the same meaning as defined in formula (2).], In which the compound represented by formula (1) is reacted with the compound represented by formula (2) using a transition metal catalyst, and a phosphorus oxo acid compound having an intramolecular P—H bond.
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Paragraph 0122-0166
(2019/09/06)
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- PROCESS FOR PREPARING AN ALKENYLPHOSPHONIC ACID DERIVATIVE
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Process for preparing an alkenylphosphonic acid derivative by reacting a phosphonic acid derivative with an alkyne in the presence of a complex catalyst system and a base whose conjugate acid has a pKa in dimethyl sulfoxide (25° C., 1 bar) of at least 6.
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Page/Page column 6
(2010/06/11)
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- Preparation of vinylphosphonic acid compounds
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A process for preparing vinylphosphonic acid compounds of the formula (I) 1where R1 and R2 are, independently, H, C1-16-alkyl, C6-12-aryl, C7-12-alkaryl or C7-12-aralkyl, it being possible for the organic radicals to be substituted by one or more halogen atoms, hydroxyl, acyl or acetoxy groups, by reacting phosphorous acid compounds of the formula (II) 2with acetylene in the presence of a Pd(O) complexe or Pt(O) complex as catalyst.
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- Preparation of vinylphosphonic acid compounds
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A process for preparing vinylphosphonic acid compounds of the formula (I) where R1and R2are, independently, H, C1-16-alkyl, C6-12-aryl, C7-12-alkaryl or C7-12-aralkyl, it being possible for the organic radicals to be substituted by one or more halogen atoms, hydroxyl, acyl or acetoxy groups, by reacting phosphorous acid compounds of the formula (II) with acetylene in the presence of a Pd(O) complexe or Pt(O) complex as catalyst.
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- Process for the preparation of unsaturated phosphonic acid ester
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A process for the preparation of an unsaturated phosphonic acid ester of the formula: EQU R1 CHC(R2)P(O)(OR3)2 PAL wherein an acetylene compound of the formula: EQU R1 CCR2 PAL is reacted with a secondary phosphite of the formula: EQU HP(O)(OR3)2 PAL in the presence of a palladium complex catalyst. The process is characterized in that the reaction is performed in the presence of water or in that the palladium complex catalyst contains, as a ligand, a 1,3-bisphosphinopropane of the formula: STR1 wherein R4, R5, R6 and R7 stand, independently from each other, for an alkyl group, a cycloalkyl group, an aralkyl group or an aryl group.
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- Process for the production of unsaturated phosphonic ester
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An unsaturated phosphonic ester is produced by reaction of an acetylene compound with a secondary phosphite in the presence of a palladium complex catalyst.
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- PHOTOLYSIS OF ARYL ESTERS OF TRI- AND TETRACOORDINATED PHOSPHORUS COMPOUNDS
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Upon UV excitation in methanol, some diaryl esters of alkly- or alkenyl phosphonates underwent an elimination of two aryl groups to give biaryls and the corresponding alkyl- or alkenylphosphonic acids.Tris(4-methoxyphenyl) phosphite also underwent a similar elimination to give 4,4'-dimethoxybiphenyl and 4-methoxyphenyl phosphonate.This interesting biaryl elimination was confirmed to proceed via a singlet intramolecular excimer by means of fluorescence spectra and Stern-Volmer analysis.
- Shi, Min,Yamamoto, Kiichi,Okamoto, Yoshiki,Takamuku, Setsuo
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- Process for the preparation of vinylphosphonic acid diesters and vinylphosphonic acid
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A method for making a vinylphosphonic acid diester of the formula by heating a dialkyl 2-acetoxyethane phosphonate of the formula in the presence of an acidic or basic catalyst and reacting the resulting product with an orthoester of the formula
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