Patents Represented by Attorney Wendell W. Brooks

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  • Preparation of dihydroaromatic hydrocarbons
    Patent number: 4187156
    Abstract: Electrolytic reduction at the cathode of aromatic hydrocarbons in an aqueous emulsive electrolysis medium in an undivided electrolytic cell yields dihydroaromatic hydrocarbons.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: February 5, 1980
    Assignee: Monsanto Company
    Inventors: James P. Coleman, John H. Wagenknecht
  • One-step dehydrohalogenation-rearrangement-hydrogenation of 1,1-bis(4-hydroxyaryl)-2-haloethanes
    Patent number: 4156787
    Abstract: Dehydrohalogenation-rearrangement-hydrogenation of 1,1-bis(4-hydroxyaryl)-2-haloethanes in an aliphatic carboxylic acid solvent containing a carboxylic acid salt in the presence of gaseous hydrogen and a hydrogenation catalyst is effected in one step to yield 1,2-bis(4-hydroxyaryl)ethanes. The process is particularly directed to the production of 1,2-bis(4-hydroxyphenyl)ethane from 1,1-bis(4-hydroxyphenyl)-2-chloroethane.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: May 29, 1979
    Assignee: Monsanto Company
    Inventor: James P. Coleman
  • Electrolytic flow-cell apparatus and process for effecting sequential electrochemical reaction
    Patent number: 4133726
    Abstract: This invention relates to an electrolytic flow-cell apparatus and a process for effecting sequential electrochemical reactions of redoxidative compounds at a porous working electrode. The porous working electrode has a first face and a second and opposite face, at which faces the sequential reactions are effected.
    Type: Grant
    Filed: September 23, 1977
    Date of Patent: January 9, 1979
    Assignee: Monsanto Company
    Inventors: John H. Wagenknecht, Dean G. Laurin
  • Addition of organic electrophiles to carbon acids via catalysis by electrogenerated bases
    Patent number: 4132611
    Abstract: Organic electrophiles are added to carbon acids via catalysis by electrogenerated bases to yield carbon acid-organic electrophile addition products.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: January 2, 1979
    Assignee: Monsanto Company
    Inventors: Manuel M. Baizer, Richard D. Goodin, Richard C. Hallcher
  • Electrochemical process for the preparation of acetals of 2-haloaldehydes
    Patent number: 4120761
    Abstract: Electrolysis of a substantially anhydrous electrolysis medium comprising a primary alcohol having at least one beta-hydrogen atom and anhydrous hydrogen halide selected from the group consisting of hydrogen chloride and hydrogen bromide yields acetals of 2-haloaldehydes corresponding to the primary alcohol.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: October 17, 1978
    Assignee: Monsanto Company
    Inventor: Donald A. White
  • Process for electrolytic oxidative methyl-methyl coupling of cresol salts
    Patent number: 4101392
    Abstract: Cresol salts substituted with non-interfering, blocking substituents at least at the 2,4,6-positions relative to the phenolic oxyanion where at least one of the substituents is the cresolic methyl are electrolytically oxidized to yield methyl-methyl coupled dehydrodimeric cresols.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: July 18, 1978
    Assignee: Monsanto Company
    Inventors: Richard C. Hallcher, Manuel M. Baizer
  • Electrolytic reductive coupling of hydroxybenzaldehydes
    Patent number: 4087336
    Abstract: Electrolytic reductive coupling of hydroxybenzaldehydes in an aqueous alkaline electrolysis medium in an undivided electrolytic cell yields 1,2-bis(hydroxyphenyl)ethane-1,2-diols.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: May 2, 1978
    Assignee: Monsanto Company
    Inventor: John H. Wagenknecht
  • Hydrogenolysis of hydrobenzoins
    Patent number: 4087463
    Abstract: Hydrogenolysis of hydrobenzoins [1,2-bis(aryl)ethane-1,2-diols] in the presence of a catalyst comprising cobalt carbonyl yields 1,2-bis(aryl)ethanes. The process is particularly directed to the production of 1,2-bis(4-hydroxyphenyl)ethane from 4,4-dihydroxyhydrobenzoin [1,2-bis(4-hydroxyphenyl)ethane-1,2-diol].
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 2, 1978
    Assignee: Monsanto Company
    Inventors: Denis Forster, George F. Schaefer
  • Electrolytic process for the preparation of ethane-1,1,2,2-tetracarboxylate esters and related cyclic tetracarboxylate esters
    Patent number: 4076601
    Abstract: Electrolytic dehydrodimeric coupling of malonate esters at elevated temperatures yields ethane-1,1,2,2-tetracarboxylate esters. Similar intramolecular coupling of bismalonate esters yields related cyclic tetracarboxylate esters in which the ethane-1,1,2,2-ethanetetracarboxylate moiety is incorporated into a ring.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: February 28, 1978
    Assignee: Monsanto Company
    Inventor: Donald A. White
  • Electrolytic carboxylation of carbon acids via electrogenerated bases
    Patent number: 4072583
    Abstract: Electrolytic carboxylation of carbon acids via electrogenerated bases leads to carboxylated carbon acids.
    Type: Grant
    Filed: October 7, 1976
    Date of Patent: February 7, 1978
    Assignee: Monsanto Company
    Inventors: Richard C. Hallcher, Manuel M. Baizer, Donald A. White
  • Electrolytic flow-cell apparatus and process for effecting sequential electrochemical reaction
    Patent number: 4071429
    Abstract: This invention relates to an electrolytic flow-cell apparatus and a process for effecting sequential electrochemical reactions of redoxidative compounds at a porous working electrode. The porous working electrode has a first face and a second and opposite face, at which faces the sequential reactions are effected.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: January 31, 1978
    Assignee: Monsanto Company
    Inventors: John H. Wagenknecht, Dean G. Laurin
  • Electrolytic monocarboxylation of activated olefins
    Patent number: 4028201
    Abstract: Olefinic nitriles, esters and amides are electrolytically mono-carboxylated in the presence of carbon dioxide and a proton donor.
    Type: Grant
    Filed: November 13, 1972
    Date of Patent: June 7, 1977
    Assignee: Monsanto Company
    Inventor: Donald Armon Tyssee
  • Electrolytic preparation of phosphorus acid from elemental phosphorus
    Patent number: 4021322
    Abstract: Elemental phosphorus is oxidized via indirect electrolytic oxidation to yield phosphorous acid, (HO).sub.2 HPO.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: May 3, 1977
    Assignee: Monsanto Company
    Inventor: Michael J. Dolan
  • Electrolytic preparation of phosphorous acid from elemental phosphorus
    Patent number: 4021321
    Abstract: Elemental phosphorus is oxidized via indirect electrolytic oxidation in an electrolysis medium containing elemental phosphorus, an aqueous solution of hydrogen halide, and a non-aqueous solvent to produce phosphorous acid, (HO).sub.2 HPO.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: May 3, 1977
    Assignee: Monsanto Company
    Inventor: Donald A. White