Patents by Inventor Stefan Schnippering

Stefan Schnippering 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).

  • Organolithium process under continuous flow conditions
    Patent number: 11407769
    Abstract: The invention relates to methods for CC bond formation using organolithium compounds under continuous flow conditions in a micro or mesoreactor system, wherein an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form a Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic secondary product, the organolithium compound RLi being used as a solution in a hydrocarbon or hydrocarbon mixture and the RLi concentration being at least 3 M, preferably at least 4 M.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 9, 2022
    Assignee: Albemarle Germany GmbH
    Inventors: Stefan Schnippering, Ulrich Wietelmann, Nikzad Nikbin, Gary John Tarver
  • STABLE ALKALI AMIDE SOLUTIONS AND PROCESSES FOR PREPARING SAME
    Publication number: 20210371435
    Abstract: The object of the invention are solutions of alkali metal amides MNR1R2, wherein M is an alkali metal selected from Li, Na, K, Rb, Cs; R1 and R2 independently of one another are linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together are a cycloalkyl radical, the alkali metal amides being present in methyltetrahydropyran or in a solvent mixture containing methyltetrahydropyran, and processes for their preparation.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 2, 2021
    Inventors: Dirk DAWIDOWSKI, Annika HÖRBERG, Uwe LISCHKA, Theresa SCHMIDT, Johannes KLÖSENER, Ulrich WIETELMANN, Peter RITTMEYER, Stefan SCHNIPPERING
  • Organolithium Process Under Continuous Flow Conditions
    Publication number: 20210040124
    Abstract: The invention relates to methods for CC bond formation using organolithium compounds under continuous flow conditions in a micro or mesoreactor system, wherein an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form a Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic secondary product, the organolithium compound RLi being used as a solution in a hydrocarbon or hydrocarbon mixture and the RLi concentration being at least 3 M, preferably at least 4 M.
    Type: Application
    Filed: November 13, 2018
    Publication date: February 11, 2021
    Inventors: Stefan Schnippering, Ulrich Wietelmann, Nikzad Nikbin, Gary John Tarver