Patents by Inventor Hubert Schmidbaur

Hubert Schmidbaur has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4620020
    Abstract: Novel bis-phosphonium salts of the general formula ##STR1## in which R.sup.1 stands for a straight or branched alkyl group having from 1 to 12 carbon atoms,R.sup.2 stands for methyl, ethyl, n-propyl or iso-propyl, andX.sup..crclbar. stands for a monovalent anion or complex anion, or2 X.sup..crclbar. stands for a bivalent inorganic anion, are made.To this end, a triorganylphosphonium alkylide of the general formula R.sub.3.sup.1 P=CHR.sup.2 is reacted with an anhydrous copper(II)-halide in a solvent at temperatures of C. to C. with agitation, precipitated bis-phosphonium dihalogenocuprate(I) is separated and, if desired, converted by metathesis into another bis-phosphonium salt.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: October 28, 1986
    Assignee: Hoecht Aktiengesellschaft
    Inventors: Hubert Schmidbaur, Cornelia Dorzbach, Graham Bowmaker
  • Patent number: 4546195
    Abstract: The invention concerns a novel process for the production of a complex cound comprising an amino-dicarboxylic acid ion component, a bivalent metal ion component, and a halogen ion component, which comprises the step of reacting together in an aqueous medium an amino-dicarboxylic acid compound, a bivalent metal compound, and a halogen compound, the proportions of said compounds being chosen so that one of each of said ion components is comprised in the aqueous medium, the bivalent metal compound being selected from the oxide, hydroxide, carbonate or a halide of the bivalent metal, and the halogen compound being said halide of the bivalent metal or a hydrogen halide. Certain of the complexes are novel and find use in a variety of medical and veterinary fields.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: October 8, 1985
    Assignee: Verla-Pharm, Arzneimittelfabrik, Apotheker H.J.v. Ehrlich GmbH & Co. KG
    Inventors: Joachim Helbig, Hubert Schmidbaur
  • Patent number: 4185028
    Abstract: Double ylide complexes of metals are made by reacting trimethylphosphin-imino-dimethyl-methylene phosphorane of the formula ##STR1## with one or more compounds of the metals nickel, palladium, platinum, gold, zinc, cadmium, aluminum, gallium, indium, thallium, magnesium or lithium.The novel double ylide complexes comprise various metal-bis[nitrido-bis(dimethylphosphonium methylides)], dimethyl-metal[nitrido-bis(dimethylphosphonium methylides)], and lithium-[nitrido-bis(dimethylphosphonium methylide)].
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: January 22, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hubert Schmidbaur, Hans-Jurgen Fuller
  • Patent number: 4173590
    Abstract: Novel chemical compounds which comprise tetramethyldiphosphinomethane of the formula:(CH.sub.3).sub.2 P--CH.sub.2 --P(CH.sub.3).sub.2and methyllithium-dimethylphosphine of the formula:LiCH.sub.2 --P(CH.sub.3).sub.2,the latter being an intermediate product. Methyllithium-dimethylphosphine is made by reacting a solution of trimethylphosphine with a solution of alkyllithium in an inert solvent with the exclusion of air and moisture, filtering the resulting white precipitate, washing it with the inert solvent, and drying the washed material. Tetramethyldiphosphinomethane is made by reacting, with agitation, a suspension of methyllithium-dimethylphosphine, or dilithiomethane of the formula Li(CH).sub.2 or magnesiomethane of the formula MgCH.sub.2 in an organic solvent with dimethylchlorophosphine and distilling the resulting reaction mixture.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: November 6, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hubert Schmidbaur, Hans-Heinz Karsch
  • Patent number: 4097509
    Abstract: Double-ylide metal complexes are made. To this end, one or more bis-?methyl-(diorganyl)-phosphoranylidene!-methanes of the general formula(CH.sub.3)R.sup.1 R.sup.2 P.dbd.C.dbd.PR.sup.1 R.sup.2 (CH.sub.3)in which R.sup.1 and R.sup.2 each stand independently of one another for an alkyl radical having 1 to 4 carbon atoms, or phenyl or tolyl, are reacted with one or more compounds of a monovalent, bivalent or trivalent metal.
    Type: Grant
    Filed: March 22, 1977
    Date of Patent: June 27, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hubert Schmidbaur, Oswald Gasser
  • Patent number: 4083875
    Abstract: Trimethyl phosphinimino dimethyl methylene phosphorane of the formula: ##STR1## which is a novel chemical compound is produced. To this end, a tetramethyl phosphonium halide is reacted with 1.1 to 1.5 times the molar quantity of an alkali metal amide in an organic solvent, at to C, with the exclusion of air and moisture, and over a period of 24 to 72 hours. The reaction mixture is freed from residue and subjected to fractional distillation.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: April 11, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hubert Schmidbaur, Hans-Jurgen Fuller