Patents by Inventor Raymond V. H. Jones

Raymond V. H. Jones 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: 5637727
    Abstract: A process for transforming a carbonyl compound into its corresponding epoxide, which comprises contacting the carbonyl compound with either trimethylsulphonium hydrogen sulphate and/or bis(trimethylsulphonium) sulphate or trimethylsulphoxonium hydrogen sulphate and/or bis(trimethylsulphoxonium) sulphate, in the presence of a base.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: June 10, 1997
    Assignee: Zeneca Limited
    Inventors: Raymond V. H. Jones, Elizabeth S. C. Simpson
  • Patent number: 5527953
    Abstract: A process for the manufacture of N-phosphonomethyliminodiacetic acid which comprises: 1) reacting iminodiacetic acid with phosphorous acid and a source of formaldehyde in aqueous solution in the presence of concentrated sulphuric acid; 2) filtering and recovering the N-phosphonomethyliminodiacetic acid product precipitated in stage (1); 3) recovering the filtrates from stage (2) and optionally removing a proportion of the water therefrom; 4) transferring the filtrates from stage (3) to a further reaction stage in which further iminodiacetic acid is reacted with phosphorous acid and a source of formaldehyde in the presence of sulphuric acid; and thereafter 5) repeating stages (1), (2), (3) and (4) in a plurality of re-cycles.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: June 18, 1996
    Assignee: Zeneca Limited
    Inventors: Raymond V. H. Jones, Michael C. H. Standen, Graham A. Rae, David J. Ritchie
  • Patent number: 5410074
    Abstract: A compound of formula (I) ##STR1## where R.sup.1, R.sup.2, and R.sup.3 are alkyl or aralkyl or any two of R.sup.1, R.sup.2, and R.sup.3 together form a cycloalkyl ring and Y is S or S(O) is prepared by reacting N-phosphonomethylglycine with a compound of formula (II) ##STR2## where m is 0 or 1 in the presence of a base. A preferred compound of formula (I) is trimethylsulphonium N-phosphonomethylglycine and a preferred compound of formula (II) is trimethylsulphonium hydrogen sulphate.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: April 25, 1995
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, Elizabeth S. C. Simpson
  • Patent number: 5300680
    Abstract: A compound of formula (I) ##STR1## where R.sup.1, R.sup.2, and R.sup.3 are alkyl or aralkyl or any two of R.sup.1, R.sup.2, and R.sup.3 together form a cycloalkyl ring and Y is S or S(O) is prepared by reacting N-phosphonomethylglycine with a compound of formula (II) ##STR2## where m is 0 or 1 in the presence of a base. A preferred compound of formula (I) is trimethylsulphonium N-phosphonomethylglycine and a preferred compound of formula (II) is trimethylsulphonium hydrogen sulphate.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: April 5, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, Elizabeth S. C. Simpson
  • Patent number: 5242625
    Abstract: Process for the preparation of compounds of formula (I):Y--Mg--X (I)wherein Y is allyl, or an optionally substituted phenyl or optionally substituted benzyl group, and X is a halogen, by reaction of a compound of formula (II):Y--X (II)wherein Y and X have the meanings given above, with magnesium in tertiary-butylmethyl ether solvent, characterized in that the molar ratio of magnesium to compound of formula (II) is from 1:1 to 2:1 and the reaction is carried out at 45.degree. C. or above.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: September 7, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, Robert C. Ewins, Robert M. Mellor
  • Patent number: 5209459
    Abstract: Process for the preparation of compounds of formula (I):Y--Mg--X (I)wherein Y is an optionally substituted phenyl or benzyl, and X is a halogen, by reaction of a compound of formula (II):Y--X (II)wherein Y and X have the meanings given above, with magnesium in a solvent, characterized in that the solvent is an acetal of formula (III): ##STR1## wherein R.sup.1 and R.sup.2 are independently alkyl having from 1 to 6 carbon atoms or when taken together form a dioxolane ring, and R.sup.3 is hydrogen or alkyl having from 1 to 6 carbon atoms.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: May 11, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, John M. Bloomer
  • Patent number: 4966976
    Abstract: Transformation of specified 4H-substituted-1,2,4-triazoles into their 1H-substituted isomers by heating at a temperature of 150.degree. C. to 300.degree. C. in the presence of a base and, essentially, in the absence of a polar aprotic solvent.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: October 30, 1990
    Assignee: Imperial Chemical Industries plc
    Inventor: Raymond V. H. Jones
  • Patent number: 4898997
    Abstract: These compounds have the general formula: ##STR1## wherein R and R.sup.1, which may be the same or different, are hydrogen or alkyl, preferably C.sub.1 -C.sub.4 alkyl, and X, Y and Z are each independently hydrogen, chlorine or fluorine, provided that when R, R.sup.1 and Z are hydrogen, X and Y are not both hydrogen or both fluorine, and are prepared by dehydrating an alcohol of the formula: ##STR2## by, for example, heating the alcohol in the presence of a catalytic amount of a strong acid such as p-toluenesulphonic acid and preferably in the presence of an inert solvent.The compounds are intermediate for the preparation of fungicidal compounds.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: February 6, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, Ian G. C. Fleming
  • Patent number: 4431852
    Abstract: Compounds of the formula: ##STR1## wherein R and R.sup.1, which may be the same or different, are hydrogen or alkyl; X, Y and Z are each independently hydrogen, chlorine or fluorine and A is chlorine or bromine, are prepared by reacting a tertiary alcohol of general formula: ##STR2## or a substituted alkene of general formula: ##STR3## with chlorine, bromine, hypochlorous acid or hypobromous acid in water at a pH not exceeding 7 and at a temperature from 10.degree. to 150.degree. C.The compounds are useful intermediates for fungicides.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: February 14, 1984
    Assignee: Imperial Chemical Industries Limited
    Inventors: James A. Falconer, Raymond V. H. Jones, Ian G. C. Fleming