公开(公告)号：US20230142429A1

公开(公告)日：2023-05-11

申请号：US17915448

申请日：2021-03-22

Applicant: DSM IP ASSETS B.V.

Inventor： Werner BONRATH ,  Marc-André MUELLER ,  Bettina WUESTENBERG ,  Viktor ZIMMERMANN

IPC: C07D333/48

CPC classification number: C07D333/48

Abstract: The present invention relates to a new process for the production of new specific intermediates, which are preferably used in the production of vitamin A, vitamin A acetate, or β-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin.

公开(公告)号：US20250034087A1

公开(公告)日：2025-01-30

申请号：US18712069

申请日：2022-11-23

Applicant: DSM IP ASSETS B.V.

Inventor： Werner BONRATH ,  Jonathan Alan MEDLOCK ,  Marc-André MUELLER ,  Marcel STETTLER ,  Bettina WUESTENBERG ,  Viktor ZIMMERMANN

IPC: C07C403/20 ,  C07D333/48

Abstract: The present invention relates to a new process for the production of vitamin A and/or its derivatives.

公开(公告)号：US20230125156A1

公开(公告)日：2023-04-27

申请号：US17915453

申请日：2021-03-22

Applicant: DSM IP ASSETS B.V.

Inventor： Werner BONRATH ,  Marc-André MUELLER ,  Bettina WUESTENBERG ,  Viktor ZIMMERMANN

IPC: C07C67/08 ,  C07C69/28

Abstract: The present invention relates to a new process for the production of vitamin A and/or its derivatives.

公开(公告)号：US20230068017A1

公开(公告)日：2023-03-02

申请号：US17788237

申请日：2020-12-15

Applicant: DSM IP Assets B.V.

Inventor： Werner BONRATH ,  Marc-André MUELLER ,  Bettina WUESTENBERG ,  Viktor ZIMMERMANN

IPC: C07C47/225 ,  C07C45/00

Abstract: The present invention relates to a new compound and the dehydrogenation of that compound to produce retinal.

公开(公告)号：US20220204445A1

公开(公告)日：2022-06-30

申请号：US17603184

申请日：2020-04-03

Applicant: DSM IP ASSETS B.V.

Inventor： Werner BONRATH ,  Marc-André MUELLER ,  Bettina WUESTENBERG ,  Viktor ZIMMERMANN

IPC: C07C403/14

Abstract: The present invention relates to a new process for the production of retinal or hydrogenated form of retinal.