Patents by Inventor Mark Robert Sykes

Mark Robert Sykes 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).

  • Process for the preparation of azoxystrobin and analogues thereof
    Patent number: 7244737
    Abstract: The present invention relates to a compound of the general formula: wherein R1 is a 4-pyrimidinyl ring substituted at the 6-position by halo, hydroxy, 2-cyanophenoxy, 2,6-difluorophenoxy, 2-nitrophenoxy or 2-thiocarboxamidophenoxy and wherein R2 is any group which can be transesterified to form a methyl ester. The present invention is also directed to a process of preparing said compound.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: July 17, 2007
    Assignee: Syngenta Limited
    Inventors: David Anthony Jackson, James Peter Muxworthy, Mark Robert Sykes
  • Process for the preparation of azoxystrobin and analogues thereof
    Patent number: 7084272
    Abstract: A process for the preparation of a compound of the general formula (I): wherein R1 is a 4-pyrimidinyl ring substituted at the 6-position by halo, hydroxy, 2-cyanophenoxy, 2,6-difluorophenoxy, 2-nitrophenoxy or 2-thiocarboxamidophenoxy and R2 is any group which can be transesterified to form a methyl ester, which comprises treating a compound of general formula (II): wherein R1 and R2 have the meanings given above, with a formylating agent and subsequently treating the formylated product with a methylating agent
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: August 1, 2006
    Assignee: Syngenta Limited
    Inventors: David Anthony Jackson, James Peter Muxworthy, Mark Robert Sykes
  • Process for the preparation of azoxystrobin and analogues thereof
    Publication number: 20040242607
    Abstract: A process for the preparation of a compound of the general formula (I): wherein R1 is a 4-pyrimidinyl ring substituted at the 6-position by halo, hydroxy, 2-cyanophenoxy, 2,6-difluorophenoxy, 2-nitrophenoxy or 2-thiocarboxamidophenoxy and R2 is any group which can be transesterified to form a methyl ester, which comprises treating a compound of general formula (II): wherein R1 and R2 have the meanings given above, with a formylating agent and subsequently treating the formylated product with a methylating agent.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 2, 2004
    Inventors: David Anthony Jackson, James Peter Muxworthy, Mark Robert Sykes