Patents by Inventor Martin Charles Bowden
Martin Charles Bowden 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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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: 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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Patent number: 8129560Abstract: A process for the preparation of a compound of formula (I), the process comprising: (i) the reaction of a compound of formula (III), with a compound of formula (IV) to give a compound of formula (II), and (ii) the reaction of the compound of formula (II) with a leaving group, to give the compound of formula (I).Type: GrantFiled: August 8, 2006Date of Patent: March 6, 2012Assignee: Syngenta Crop Protection, Inc.Inventors: Martin Charles Bowden, Thomas Aitcheson Clark, Fanny Giordano, Beat Jau, Hans-Dieter Schneider, Gottfried Seifert, Martin Zeller, Dominik Faber, Juerg Wiss
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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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Publication number: 20090118532Abstract: A process for the preparation of a compound of formula (I) wherein: R is an alkynyl group; R1 is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkyl-alkyl, phenyl and phenylalkyl, it being possible in turn for all of the receding groups to carry one or more identical or different halogen atoms; alkoxy; alkenyloxy; alkynyloxy; alkoxyalkyl; haloalkoxy; alkylthio; haloalkylthio; alkysulfonyl; formyl; alkanoyl; hydroxy; halogen; cyano; nitro; amino; alkylamino; dialkylamino; carboxyl; alkoxycarbonyl; alkenyloxycarbonyl; or alkynyloxycarbonyl; and n is an integer from 0 to 3, said process comprising: (i) the reaction of a compound of formula (III) wherein R, R1 and n are as hereinbefore defined; m and m? are independently 0 or 1; when m and m? are both 0, A is an alkyl, alkenyl or alkynyl group (suitably having up to eight carbon atoms), optionally substituted by one or more groups independently selected from halogen, hydroxy, alkoxy, C1-4 dialkylamino or cyano; when one of m and m? is 0 and the other is 1, A is an alType: ApplicationFiled: August 8, 2006Publication date: May 7, 2009Applicant: SYNGENTA CROP PROTECTION, INC.Inventors: Martin Charles Bowden, Thomas Aitcheson Clark, Fanny Giordano, Beat Jau, Hans-Dieter Schneider, Gottfried Seifert, Martin Zeller, Dominik Faber, Juerg Wiss
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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: 6639079Abstract: A process for the preparation of 3,5-dichloropyridine comprising reacting a trichloropyridine, a tetrachloropyridine or pentachloropyridine with zinc metal, in the presence of an acidic compound and at a temperature in the range 50-120° C.Type: GrantFiled: May 28, 2002Date of Patent: October 28, 2003Assignee: Syngenta LimitedInventors: Stephen Martin Brown, Martin Charles Bowden
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Patent number: 6323343Abstract: A process for preparing a compound of formula (IV), wherein R1 is C1-4alkyl, CH2(C1-3haloalkyl), benzyl, CH2(C2-5akenyl or CH2(C2-5alkynyl), which comprises reducing a compound of formula (III). Compounds of formula (IV) are agrochemical intermediates.Type: GrantFiled: May 30, 2000Date of Patent: November 27, 2001Assignee: Syngenta LimitedInventors: Martin Charles Bowden, Stephen Martin Brown, Douglas John Smith, Trevor Robert Perrior
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Patent number: 6316624Abstract: A process for preparing a compound of formula (IV) wherein R1 is C1-4 alkyl, C1-4 haloalkyl, benzyl, C3-6 alkenyl or C3-6 alkyny, (provided that the &agr;-carbon atom of R1 is neither unsaturated nor substituted with halogen), which comprises reacting a compound of formula (III) with a source of hydroxylamine in the presence of an acid. Compounds of formula (IV) are agrochemical intermediates.Type: GrantFiled: May 30, 2000Date of Patent: November 13, 2001Assignee: Syngenta Ltd.Inventors: Martin Charles Bowden, Stephen Martin Brown
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Patent number: 6156904Abstract: 5-Chloro-2-(4,4-difluorobutylthio)thiazole is prepared from 2-mercaptotriazole by a multistep process involving S-alkylation, chlorination and dehydrochlorination and is converted by oxidation to the corresponding sulfone which is useful as an agricultural nematicide.Type: GrantFiled: December 22, 1999Date of Patent: December 5, 2000Assignee: Zeneca LimitedInventors: Martin Charles Bowden, Stephen Martin Brown