Patents by Inventor Tomas Smejkal

Tomas Smejkal 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: 9643938
    Abstract: The present invention relates to processes for the preparation of substituted cycloserine compounds of formula (I) wherein R1 is C1-C8alkyl, C1-C8haloalkyl, C3-C6cycloalkyl, aryl or aryl substituted by one to five R11, or aryl-C1-C4alkylene or aryl-C1-C4alkylene substituted by one to five R11; and each R11 is independently C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, cyano or halogen; The invention also relates to intermediates produced by the processes. Compounds of formula (I) are useful intermediates for the production of compounds in the agricultural and pharmaceutical fields.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 9, 2017
    Assignee: Syngenta Participations AG
    Inventors: Tomas Smejkal, Helmars Smits, Christian Lothschuetz, Miroslav Terinek
  • Publication number: 20170044116
    Abstract: The present invention relates to processes for the preparation of substituted cycloserine compounds of formula (I) wherein R1 is C1-C8alkyl, C1-C8haloalkyl, C3-C6cycloalkyl, aryl or aryl substituted by one to five R11, or aryl-C1-C4alkylene or aryl-C1-C4alkylene substituted by one to five R11; and each R11 is independently C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, cyano or halogen; The invention also relates to intermediates produced by the processes. Compounds of formula (I) are useful intermediates for the production of compounds in the agricultural and pharmaceutical fields.
    Type: Application
    Filed: April 30, 2015
    Publication date: February 16, 2017
    Applicant: Syngenta Participations AG
    Inventors: Tomas SMEJKAL, Helmars SMITS, Christian LOTHSCHUETZ, Miroslav TERINEK
  • Patent number: 9469633
    Abstract: The present invention relates to processes for the enantio-selective preparation of spyrrolidine derivatives useful in the manufacture of pesticidally active compounds, as well as to intermediates in the processes. The processes include those comprising (a-i) reacting a compound of formula Ia wherein P is alkyl, aryl or heteroaryl, each optionally substituted, wherein the heteroaryl is connected at P via a ring carbon atom; R1 is chlorodifluoromethyl or trifluoromethyl; R2 is aryl or heteroaryl, each optionally substituted; with a source of cyanide in the presence a chiral catalyst to give a compound of formula IIa wherein P, R1 and R2 are as defined for the compound of formula Ia; and (a-ii) oxidizing the compound of formula IIa with a peroxy acid, or peroxide in the presence of an acid to give a compound of formula VI wherein R1 and R2 are as defined for the compound of formula Ia.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 18, 2016
    Assignee: Syngenta Participations AG
    Inventors: Tomas Smejkal, Helmars Smits, Sebastian Volker Wendeborn, Guillaume Berthon, Jerome Yves Cassayre, Myriem El Qacemi
  • Publication number: 20160159799
    Abstract: A process for making certain spiroheterocyclic pyrrolidine dione derivatives.
    Type: Application
    Filed: July 11, 2014
    Publication date: June 9, 2016
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Edouard Godineau, Tomas Smejkal, Sophie Pelletier, Michel Muehlebach, Regis Jean Georges Mondiere, Helmars Smits, Jochen Weckesser, Alan James Robinson
  • Publication number: 20160157485
    Abstract: Compounds of the formula (I), in which the substituents are as defined in claim 1, are suitable for use as nematicides.
    Type: Application
    Filed: July 1, 2014
    Publication date: June 9, 2016
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Anthony Cornelius O-Sullivan, Regis Jean Georges Mondiere, Olivier Loiseleur, Tomas Smejkal, Torsten Luksch, Andre Jeanguenat, Raphael Dumeunier, Edouard Godineau, Thomas Pittema
  • Patent number: 9282743
    Abstract: Compounds of formula (I) wherein the substituents are as defined in claim 1, are useful as a pesticides and herbicides.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 15, 2016
    Assignee: Syngenta Participations AG
    Inventors: Tomas Smejkal, Michel Muehlebach
  • Patent number: 9120759
    Abstract: The present invention relates to a process for the enantioselective preparation of 3-difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid ((1S,4R)-9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-yl)-amide of formula Ib.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: September 1, 2015
    Assignee: Syngenta Participations AG
    Inventor: Tomas Smejkal
  • Patent number: 9051272
    Abstract: The invention relates to a process for the preparation of a compound of formula (I), wherein R1, R2 and R3 are as defined in claim 1, which process comprises a) adding a compound of formula (II), in the presence of an inert organic solvent to a mixture comprising an organic nitrite of formula (III) (R4—O—N?O (III)), wherein R4 is C1-C8alkyl, a compound of formula (IV), and an inert organic solvent; b) reacting the resulting compound of formula (V), with H2N—O—CH3 to the compound of formula (VII), c) reducing the compound of formula (VII) to the compound of formula (VIII), d) and reacting the compound of formula VIII with a compound of formula (IX), in which R* is halogen, hydroxy or C1-6 alkoxy, to the compound of formula (I).
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: June 9, 2015
    Assignee: Syngenta Participations AG
    Inventors: Daniel Stierli, Harald Walter, Michael Rommel, Reinhard Georg Hanreich, Martin Zeller, Thomas Vettiger, Tomas Smejkal
  • Publication number: 20150018562
    Abstract: The invention relates to a process for the preparation of a compound of formula (I), wherein R1, R2 and R3 are as defined in claim 1, which process comprises a) adding a compound of formula (II), in the presence of an inert organic solvent to a mixture comprising an organic nitrite of formula (III) (R4—O—N?O (III)), wherein R4 is C1-C8 alkyl, a compound of formula (IV), and an inert organic solvent; b) reacting the resulting compound of formula (V), with H2N—O—CH3 to the compound of formula (VII), c) reducing the compound of formula (VII) to the compound of formula (VIII), d) and reacting the compound of formula VIII with a compound of formula (IX), in which R* is halogen, hydroxy or C1-6 alkoxy, to the compound of formula (I).
    Type: Application
    Filed: February 26, 2013
    Publication date: January 15, 2015
    Inventors: Daniel Stierli, Harald Walter, Michael Rommel, Reinhard Georg Hanreich, Martin Zeller, Thomas Vettiger, Tomas Smejkal
  • Publication number: 20140364622
    Abstract: The present invention relates to a process for the enantioselective preparation of 3-difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid ((1S,4R)-9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-yl)-amide of formula Ib.
    Type: Application
    Filed: February 13, 2013
    Publication date: December 11, 2014
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventor: Tomas Smejkal
  • Publication number: 20140343049
    Abstract: The present invention relates to compounds of formula (IA) wherein QA is QA1 or QA2 P is P1, heterocycyl or heterocyclyl substituted by one to five Z; and wherein A1, A2, A3, A4, G1, Z, R1, R2, R3 and R4 are as defined in claim 1; or a salt or N-oxide thereof. Furthermore, the present invention relates to processes and intermediates for preparing compounds of formula (IA), to insecticidal, acaricidal, nematicidal and molluscicidal compositions comprising the compounds of formula (IA) and to methods of using the compounds of formula (IA) to control insect, acarine, nematode and mollusc pests.
    Type: Application
    Filed: August 10, 2012
    Publication date: November 20, 2014
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Julie Clementine Toueg, Tomas Smejkal, Sebastian Volker Wendeborn, Jerome Yves Cassayre, Myriem El Qacemi, Bernhard Breit, Lisa Diab, Regis Jean Georges Mondiere, Nicolas Poirier
  • Publication number: 20140296527
    Abstract: The present invention relates to processes for the enantio-selective preparation of spyrrolidine derivatives useful in the manufacture of pesticidally active compounds, as well as to intermediates in the processes. The processes include those comprising (a-i) reacting a compound of formula Ia wherein P is alkyl, aryl or heteroaryl, each optionally substituted, wherein the heteroaryl is connected at P via a ring carbon atom; R1 is chlorodifluoromethyl or trifluoromethyl; R2 is aryl or heteroaryl, each optionally substituted; with a source of cyanide in the presence a chiral catalyst to give a compound of formula IIa wherein P, R1 and R2 are as defined for the compound of formula Ia; and (a-ii) oxidising the compound of formula IIa with a peroxy acid, or peroxide in the presence of an acid to give a compound of formula VI wherein R1 and R2 are as defined for the compound of formula Ia.
    Type: Application
    Filed: September 28, 2012
    Publication date: October 2, 2014
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Tomas Smejkal, Helmars Smits, Sebastian Volker Wendeborn, Guillaume Berthon, Jerome Yves Cassayre, Myriem El Qacemi
  • Publication number: 20140148339
    Abstract: Compounds of formula (I) wherein the substituents are as defined in claim 1, are useful as a pesticides and herbicides.
    Type: Application
    Filed: June 22, 2012
    Publication date: May 29, 2014
    Applicant: SYNGENTA PARTICIPATIONS AG
    Inventors: Tomas Smejkal, Michel Muehlebach
  • Publication number: 20100240896
    Abstract: The present invention relates to a process for the hydroformylation of compounds of the formula (I), where X is C, P(Rx), P(O—Rx) S or S(?O), where Rx is H, alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; A is a divalent bridging group having from 1 to 4 bridging atoms; and R1 is H, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; or salts thereof; in which the compound of the formula (I) is reacted with carbon monoxide and hydrogen in the presence of a catalyst comprising a complex of a metal of transition group VIII with a compound of the formula (II), where Pn is a pnicogen atom; W is a divalent bridging group having from 1 to 8 bridging atoms; R2 is a functional group capable of forming an intermolecular, noncovalent bond with the group —X(?O)OH; R3, R4 are each alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; a, b, c are each 0 or 1; and Y1, Y2 and Y3 are each O, S, NRa or SiRbRc; and also compounds of the formula (II.
    Type: Application
    Filed: November 4, 2008
    Publication date: September 23, 2010
    Applicant: BASF SE
    Inventors: Jens Rudolph, Joachim Schmidt-Leithoff, Rocco Paciello, Bernhard Breit, Tomas Smejkal