Patents by Inventor David Anthony Jackson
David Anthony Jackson 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).
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Publication number: 20150376135Abstract: The present invention relates to a process for the preparation of bisdihaloalkyl pyrazoles of formula (V) starting from diketones and acylhalides reacted with a Lewis acid, and a subsequent reaction with a substituted hydrazine.Type: ApplicationFiled: February 7, 2014Publication date: December 31, 2015Applicant: Syngenta Participations AGInventors: Anup JAWALEKAR, Helmars SMITS, Laura QUARANTA, Sitaram PAL, David Anthony JACKSON
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Patent number: 8785657Abstract: The present invention relates to novel processes for the production of compounds of formula wherein Hal and Hal? are independently selected from Cl and F, and R1 is selected from Cl, F and H.Type: GrantFiled: September 17, 2012Date of Patent: July 22, 2014Assignee: Syngenta Crop Protection LLCInventors: Martin Charles Bowden, Brian David Gott, David Anthony Jackson, Iacob Eremia Gutu
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Patent number: 8552222Abstract: The present invention relates to a continuous process for producing a haloalkenone ether of the Formula (I) wherein R1 is C1-C6 haloalkyl, R2 is a C1-C6 alkyl or phenyl, the process comprising:—(i) reacting, in a first continuous stirred tank reactor comprising a solvent, a halide of Formula (II) wherein R1 is as previously defined and R3 is halogen, with a vinyl ether of Formula (III) wherein R2 is as previously defined, to form an intermediate compound of Formula (IV), wherein the concentration of the vinyl ether of Formula (III) in the reaction mass is 15% or less w/w; and (ii) transferring the reaction mass from the first continuous stirred tank reactor into a subsequent continuous stirred tank reactor, wherein the conditions within the subsequent reactor permit the elimination of hydrogen halide (HR3) from the intermediate compound of Formula (IV) to provide the haloalkenone ether of Formula (I).Type: GrantFiled: March 2, 2010Date of Patent: October 8, 2013Assignee: Syngenta Crop Protection LLCInventors: David Anthony Jackson, Florian Schleth, Devender Singh Negi, Werner Pfaff
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Patent number: 8501993Abstract: The invention relates to a process for the preparation of intermediates useful in the preparation of fungicidally active phenylpropargylether derivatives. The process involves coupling of carboxylic acid with an amine in (a) the absence of a catalyst; (b) the presence of a boronic acid catalyst.Type: GrantFiled: May 11, 2009Date of Patent: August 6, 2013Assignee: Syngenta LimitedInventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier, David Drouard
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Publication number: 20120289707Abstract: The invention relates to a process for the preparation of fungicidally active compounds such as tricyclic amine derivatives (I). The process involves coupling of a carboxylic acid e.g. a compound of formula (II) with an aniline, e.g. a compound of formula (III) in the presence of a boronic acid catalyst or an antimony catalyst wherein R1, R2, R3, R4, R5, R6, R7, X, Y and Het are defined in the specification.Type: ApplicationFiled: July 24, 2012Publication date: November 15, 2012Applicant: SYNGENTA CROP PROTECTION, LLCInventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier, George Robert Hodges
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Patent number: 8269020Abstract: The present invention relates to novel processes for the production of compounds of formula (I) wherein Hal and Hal? are independently selected from Cl and F, and R1 is selected from Cl, F and H.Type: GrantFiled: June 16, 2008Date of Patent: September 18, 2012Assignee: Syngenta Crop Protection LLCInventors: Martin Charles Bowden, Brian David Gott, Iacob Eremia Gutu, David Anthony Jackson
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Patent number: 8227619Abstract: The invention relates to a process for the preparation of fungicidally active compounds such as tricyclic amine derivatives (I). The process involves coupling of a carboxylic 5 acid e.g. a compound of formula (II) with an aniline, e.g. a compound of formula (III) in the presence of a boronic acid catalystor an antimony catalyst (II)(III)(I) wherein R1, R2, R3, R4, R5, R6, R7, X, Y and Het are defined in the specification.Type: GrantFiled: May 11, 2009Date of Patent: July 24, 2012Assignee: Syngenta LimitedInventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier, George Robert Hodges
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Publication number: 20120095265Abstract: The present invention relates to a continuous process for producing a haloalkenone ether of the Formula (I) wherein R1 is C1-C6 haloalkyl, R2 is a C1-C6 alkyl or phenyl, the process comprising:—(i) reacting, in a first continuous stirred tank reactor comprising a solvent, a halide of Formula (II) wherein R1 is as previously defined and R3 is halogen, with a vinyl ether of Formula (III) wherein R2 is as previously defined, to form an intermediate compound of Formula (IV), wherein the concentration of the vinyl ether of Formula (III) in the reaction mass is 15% or less w/w; and (ii) transferring the reaction mass from the first continuous stirred tank reactor into a subsequent continuous stirred tank reactor, wherein the conditions within the subsequent reactor permit the elimination of hydrogen halide (HR3) from the intermediate compound of Formula (IV) to provide the haloalkenone ether of Formula (I).Type: ApplicationFiled: March 2, 2010Publication date: April 19, 2012Applicant: SYNGENTA CROP PROTECTION, LLCInventors: David Anthony Jackson, Florian Schleth, Devender Singh Negi, Werner Pfaff
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Publication number: 20110263889Abstract: The invention relates to a process for the preparation of synthetic pyrethroid insecticides. The process involves coupling of carboxylic acid (IV) with an alcohol (V) in the presence of a catalyst wherein R1, R2, R3 and Ar are defined in the specification.Type: ApplicationFiled: May 11, 2009Publication date: October 27, 2011Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier
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Publication number: 20110178310Abstract: The invention relates to a process for the preparation of fungicidally active compounds such as tricyclic amine derivatives (I). The process involves coupling of a carboxylic 5 acid e.g. a compound of formula (II) with an aniline, e.g. a compound of formula (III) in the presence of a boronic acid catalystor an antimony catalyst (II)(III)(I) wherein R1, R2, R3, R4, R5, R6, R7, X, Y and Het are defined in the specification.Type: ApplicationFiled: May 11, 2009Publication date: July 21, 2011Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier, George Robert Hodges
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Publication number: 20110071315Abstract: The invention relates to a process for the preparation of intermediates useful in the preparation of fungicidally active phenylpropargylether derivatives. The process involves coupling of carboxylic acid with an amine in (a) the absence of a catalyst; (b) the presence of a boronic acid catalyst.Type: ApplicationFiled: May 11, 2009Publication date: March 24, 2011Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Martin Charles Bowden, David Anthony Jackson, Alexandre Christian Saint-Dizier, David Drouard
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Patent number: 7893270Abstract: The present invention relates to a process for the preparation of compounds of formula (I), wherein the substituents are as defined in claim 1, by reacting a compound of formula (II), with a bromine or chlorine source to form a compound of formula (III), wherein X is chlorine or bromine; reacting that compound with water to form the compound of formula (IV), converting that compound, using a compound of formula (V), wherein M+ is the hydrogen cation or an alkali metal ion, alkaline earth metal ion or ammonium ion, into the compound of formula (VI), and treating that compound with a cyanide source in the presence of a base.Type: GrantFiled: April 29, 2005Date of Patent: February 22, 2011Assignee: Syngenta Crop Protection, Inc.Inventors: David Anthony Jackson, Andrew Edmunds, Martin Charles Bowden, Ben Brockbank
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Publication number: 20100256390Abstract: The present invention relates to novel processes for the production of compounds of formula (I) wherein Hal and Hal? are independently Cl or F, and R1 is H, Cl or F.Type: ApplicationFiled: June 16, 2008Publication date: October 7, 2010Applicants: SYNGENTA CROP PROTECTION, INC., SYNGENTA LIMITEDInventors: Martin Charles Bowden, Brian David Gott, David Anthony Jackson
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Publication number: 20100240907Abstract: The present invention relates to novel processes for the production of compounds of formula (I) wherein Hal and Hal? are independently selected from Cl and F, and R1 is selected from Cl, F and H.Type: ApplicationFiled: June 16, 2008Publication date: September 23, 2010Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Martin Charles Bowden, Brian David Gott, David Anthony Jackson, Lacob Gutsu
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Patent number: 7501544Abstract: The present invention relates to a process for the preparation of compounds of formula (I), wherein the substituents are as defined in claim 1, by reacting a compound of formula (II), either with a chlorination or bromination agent or with a compound of formula (III) CI—SO2R9, R9 being C1-C4alkyl, C1-C4haloalkyl, phenyl or C1-C4alkyl-substituted phenyl, to form the compound of formula (IV), reacting the compound of formula (IV) with a compound of formula (V) M+-O?—C(O)—Y wherein Y is as defined above and M+ is the hydrogen cation or an alkali metal ion, alkaline earth metal ion or ammonium ion, to form the compound of formula (VI) and treating that compound with a cyanide source in the presence of a base.Type: GrantFiled: April 29, 2005Date of Patent: March 10, 2009Assignees: Syngenta Crop Protection, Inc., Syngenta LimitedInventors: David Anthony Jackson, Andrew Edmunds, Martin Charles Bowden, Ben Brockbank
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Patent number: 7488824Abstract: The present invention relates to a process for the preparation of compounds of formula (I) wherein the substituents are as defined in claim 1, by reaction of a compound of formula (II) wherein R3 is C1-C8alkyl or C3-C6cycloalkyl and R4 and R05 are as defined for formula (I), with a compound of formula (III) wherein R, R1, R2 and X1, are as defined for formula (I) in claim 1, in an inert solvent in the presence of a proton source.Type: GrantFiled: March 5, 2004Date of Patent: February 10, 2009Assignee: Syngenta Crop Protection, Inc.Inventors: David Anthony Jackson, Martin Charles Bowden
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Publication number: 20080139816Abstract: The present invention relates to a process for the preparation of compounds of formula (I), wherein the substituents are as defined in claim 1, by reacting a compound of formula (II), with a bromine or chlorine source to form a compound of formula (III), wherein X is chlorine or bromine; reacting that compound with water to form the compound of formula (IV), converting that compound, using a compound of formula (V), wherein M+ is the hydrogen cation or an alkali metal ion, alkaline earth metal ion or ammonium ion, into the compound of formula (VI), and treating that compound with a cyanide source in the presence of a base.Type: ApplicationFiled: April 29, 2005Publication date: June 12, 2008Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: David Anthony Jackson, Andrew Edmunds, Martin Charles Bowden, Ben Brockbank
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Patent number: 7244737Abstract: 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: GrantFiled: June 20, 2006Date of Patent: July 17, 2007Assignee: Syngenta LimitedInventors: David Anthony Jackson, James Peter Muxworthy, Mark Robert Sykes
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Patent number: 7138548Abstract: A process for the preparation of a compound of formula (I): wherein Ar represents an optionally substituted aromatic carbocycle or heterocycle, and R1 and R2 independently represent hydrogen, C1-10 alkyl, C(O)C1-10 alkyl or optionally substituted aryl provided that R1 and R2 are not both hydrogen which process comprises reacting together a compound of formula (II): Ar—X??(II) wherein Ar is as defined in relation to formula (I) and X represents a leaving group with a a compound of formula (III) wherein R1 and R2 are as defined in relation to formula (I) under aqueous conditions in the presence of a Pd (II) salt, a ligand and a Group I or Group II metal hydroxide base at a pH greater than 7. Compounds of formula (I) may be hydrolysed to the corresponding hydrazine.Type: GrantFiled: October 2, 2002Date of Patent: November 21, 2006Assignee: Avecia LimitedInventors: Andrew John Blacker, David Dodman, David Anthony Jackson, Jan Michael Fielden, John Heathcote Atherton
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Patent number: 7084272Abstract: 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 agentType: GrantFiled: May 3, 2002Date of Patent: August 1, 2006Assignee: Syngenta LimitedInventors: David Anthony Jackson, James Peter Muxworthy, Mark Robert Sykes