公开(公告)号：US12049441B2

公开(公告)日：2024-07-30

申请号：US17799506

申请日：2020-02-18

Applicant: SYMRISE AG

Inventor： Nikolas Bugdahn ,  Angela Köckritz ,  Elka Kraleva ,  Reinhard Eckelt

IPC: C07C5/31 ,  B01J29/70

CPC classification number: C07C5/31 ,  B01J29/7038 ,  C07C2529/70

Abstract: What is proposed is a continuous process for producing limonene which has the feature that beta-pinene or beta-pinene-containing starting materials are isomerized in a trickle-bed reactor in the presence of acid catalysts.

公开(公告)号：US11028033B2

公开(公告)日：2021-06-08

申请号：US16642188

申请日：2017-08-26

Applicant: SYMRISE AG

Inventor： Anna Kulik ,  Reinhard Eckelt ,  Angela Köckritz ,  Katja Neubauer

IPC: C07C45/29

Abstract: The invention relates to a method for producing terpene aldehydes and terpene ketones by oxidatively dehydrogenating the corresponding terpene alcohols, comprising or consisting of the following steps: (a) providing terpene alcohols or terpene-alcohol-containing reactants; (b) bringing the starting substances from step (a) in contact with a heterogeneous ruthenium catalyst; (c) heating the mixture from step (b) to at least 150° C. in the presence of oxygen; optionally (d) separating the terpene aldehydes or terpene ketones from the obtained reaction mixture.

公开(公告)号：US10442751B2

公开(公告)日：2019-10-15

申请号：US15547435

申请日：2016-01-13

Applicant: SYMRISE AG

Inventor： Atia Hanan ,  Reinhard Eckelt ,  Angela Koeckritz ,  Johannes Panten ,  Peter Esser ,  Oskar Koch

IPC: C07F9/09 ,  C07C45/69 ,  C07C68/00 ,  C07C69/12 ,  C07C69/14 ,  C07C69/96 ,  C07C303/24 ,  C07C49/497 ,  C07C49/503 ,  C07C51/353 ,  C07C67/293

Abstract: The present invention relates to a method for producing a substituted alkyl cycloalkanone, comprising the alkylation of a cycloalkanone with an alkene derivative in the presence of a metal oxide, where n is 2 to 20, m is 0 to 10, and R is a functional group.