Patents by Inventor Tom BRUNZEL

Tom BRUNZEL 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).

  • Method for preparing unsaturated macrocyclic ketones (II)
    Patent number: 11472760
    Abstract: A process is proposed for preparing unsaturated macrocyclic monoketones, comprising the following steps: (a) providing macrocyclic dienes having a ring size of at least 9 carbon atoms; (b) contacting the starting materials from step (a) with (b1) a palladium(II) salt and/or a palladium(II) complex; and (b2) an oxidizing agent; and (b3) a solvent; and optionally (b4) a ligand; and optionally (b5) a co-catalyst; and optionally (b6) an acid, with the proviso that the co-catalyst (b5) comprises or consists of a divalent or trivalent iron salt which is different from FeSO4 and is preferably iron(III) nitrate.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: October 18, 2022
    Assignee: Symrise AG
    Inventors: Tom Brunzel, Angela Köckritz
  • METHOD FOR PREPARING UNSATURATED MACROCYCLIC KETONES (II)
    Publication number: 20220055976
    Abstract: A process is proposed for preparing unsaturated macrocyclic monoketones, comprising the following steps: (a) providing macrocyclic dienes having a ring size of at least 9 carbon atoms; (b) contacting the starting materials from step (a) with (b1) a palladium(II) salt and/or a palladium(II) complex; and (b2) an oxidizing agent; and (b3) a solvent; and optionally (b4) a ligand; and optionally (b5) a co-catalyst; and optionally (b6) an acid, with the proviso that the co-catalyst (b5) comprises or consists of a divalent or trivalent iron salt which is different from FeSO4 and is preferably iron(III) nitrate.
    Type: Application
    Filed: January 17, 2019
    Publication date: February 24, 2022
    Inventors: Tom Brunzel, Angela Köckritz
  • Method for synthesising an unsaturated macrocyclic ketone
    Patent number: 11021426
    Abstract: A method for producing unsaturated macrocyclic monoketones comprising the following steps: (a) preparing macrocyclic dienes with a ring size of at least 9 carbon atoms; (b) contacting the starting materials from step (a) with (b1) a palladium(II) salt and/or a palladium(II) complex; and (b2) an oxidant; and (b3) a solvent; and optionally (b4) a ligand; and optionally (b5) a co-catalyst; and optionally (b6) an acid.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 1, 2021
    Assignee: Symrise AG
    Inventors: Tom Brunzel, Angela Köckritz, Andreas Martin, Diego A. Jaime Trevino
  • METHOD FOR SYNTHESISING AN UNSATURATED MACROCYCLIC KETONE
    Publication number: 20200347002
    Abstract: A method for producing unsaturated macrocyclic monoketones comprising the following steps: (a) preparing macrocyclic dienes with a ring size of at least 9 carbon atoms; (b) contacting the starting materials from step (a) with (b1) a palladium(II) salt and/or a palladium(II) complex; and (b2) an oxidant; and (b3) a solvent; and optionally (b4) a ligand; and optionally (b5) a co-catalyst; and optionally (b6) an acid.
    Type: Application
    Filed: October 25, 2017
    Publication date: November 5, 2020
    Inventors: Tom BRUNZEL, Angela KÖCKRITZ, Andreas MARTIN, Diego A. Jaime TREVINO