摘要:
The invention relates to novel oxymethoxy-3-aryl-pyrone derivatives of the formula (I) in which A, D, R1, R2, X, Y, Z and n have the meanings specified in the description, a process for their preparation and their use as pesticides, fungicides and herbicides.
摘要:
The intention relates to bacterial antibiotic resistance and, in particular, to compositions and methods for overcoming bacterial antibiotic resistance. The invention provides novel &bgr;-lactamase inhibitors, which are structurally unrelated to the natural product and semi-synthetic &bgr;-lactamase inhibitors presently available, and which do not require a &bgr;-lactam pharmacophore. The invention also provides pharmaceutical compositions and methods for inhibiting bacterial growth.
摘要:
The present invention provides a novel process for the removal and recovery of radionuclides from waste waters and process streams. The process of the present invention utilizes a combination of a supported liquid membrane (SLM) and a strip dispersion to improve extraction of the target species while increasing membrane stability and reducing processing costs. Additionally, the invention provides a family of new extractants, alkyl phenylphosphonic acids, for the removal and recovery of radionuclides and/or metals, including the use of the new extractants in the process. The new extractant selectively removes radionuclides and metals from the feed stream to provide a concentrated strip solution of the target species.
摘要:
The optical material in accordance with the present invention contains a specific phosphonate monoester compound such as monoethyl 3-methoxy butyl phosphonate, and a metal ion such as a copper ion or rare-earth metal ion. They may be contained in a solvent or resin. The use of such a specific phosphonate monoester compound improves the compatibility with a resin, whereby the metal ion can favorably be dispersed into the resin. Consequently, spectral characteristics can be improved when the optical member is formed into a resin-made optical member.
摘要:
A method for the preparation of a fluorinated Phosphonate having the formula (RO)2PO CFR′R″ comprises treating a phosphonate of the formula (RO)2PO CHR′R″, or a metal salt thereof, with fluorine. R is an alkyl group R′ is hydrogen or alkyl and R″ is hydrogen, alkyl or another group.
摘要翻译:制备具有式(RO)2 PO CFR'R“的氟化膦酸酯的方法包括用氟处理式(RO)2 POCHR'R”的膦酸酯或其金属盐。 R是烷基,R'是氢或烷基,R“是氢,烷基或另一个基团。
摘要:
The present invention relates to a new manufacturing method for phosphonate esters, which have utility as a carbon-carbon binding formation agent, as well as a synthesis intermediate for biologically active substances such as medical drugs and agri-chemicals. Specifically the present invention relates to a new industrially advantageous manufacturing method for phosphonate esters in which the phosphonate esters of the subject can be efficiently obtained with a high yield rate through a simple operation while having barely any side reaction or sub-product. More specifically, the present invention pertains to a manufacturing method for phosphonate esters in which secondary phosphonate esters and alkene compounds are reacted in a transition metal catalyst. In addition the present invention relates to a new manufacturing method for allylphosphonate esters in which secondary cyclic phosphonate esters and 1,3-diene compounds are reacted in a palladium catalyst.
摘要:
Linear or cyclic aminophosphonates are disclosed which are useful as pH markers. A method of using the linear or cyclic aminophosphonates in phosphorus-31 NMR spectroscopy is also disclosed.
摘要:
A process for producing a diphosphine oxide or diphosphonate represented by formula (1) as defined, which comprises treating, with a base, a phosphine compound represented by formula (2) as defined and adding the thus-treated phosphine compound to a nonpolar solvent having an oxidative metal compound suspended therein so as to effect dimerization. The present invention makes it possible to produce, conveniently, in a high yield and safely, a diphosphine oxide or diphosphonate which is an intermediate for producing a diphosphine compound useful as a ligand of a metal complex serving as a catalyst for asymmetric synthesis reaction.
摘要:
The present invention provides novel phosphonic acid diester derivatives useful as medicines. The phosphonic acid diester derivatives are represented by the general formula: wherein R1 represents amino group, N-lower alkylamino group, N-lower alkenylamino group, or the like; R2 and R3 represent hydrogen atom, lower alkyl group, halogen atom, lower alkoxy group, or the like; R4 represents hydrogen atom, lower alkyl group or phenyl(lower)alkyl group; R5 and R6 represent lower alkyl group; X, Y and Z represent that all of them are carbon atoms or one of them is nitrogen atom and the other two are carbon atoms; Q represents a single bond or alkylene group; or the pharmacologically acceptable salts thereof.
摘要:
A phosphonic acid ester compound of the formula: R1C(SR3)═CHP(═O)(OR2)2 or [P(═O)(OR2)2]CH═C(SR3)—R4—C(SR3)═CH[P(═O)(OR2)2] wherein R1 represents a monovalent group selected from hydrogen, alkyl, cycloalkyl, cycloalkenyl, aryl, aralkyl, alkenyl and silyl, R2 and R3 each represent aryl and R4 represents alkylene or cycloalkylene. The ester compound is produced by reaction of an acetylene compound, R1C≡CH or HC≡C—R4—C≡CH, with with a phosphorothioate, (R2O)2P(═O)SR3, in the presence of a palladium complex catalyst.