公开(公告)号：US12139452B2

公开(公告)日：2024-11-12

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: C07C403/08 ,  C07C403/14

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

公开(公告)号：US11136277B2

公开(公告)日：2021-10-05

申请号：US16645589

申请日：2018-09-13

Applicant: DSM IP ASSETS B.V.

Inventor： Raphael Beumer ,  Werner Bonrath ,  Marc-André Mueller ,  Bettina Wüestenberg

IPC: C07C1/213

Abstract: The present invention relates to a process for the production of β-springene of formula (I) wherein a compound of formula (II) is heated in the presence of a catalyst.

公开(公告)号：US11851404B2

公开(公告)日：2023-12-26

申请号：US17676077

申请日：2022-02-18

Applicant: DSM IP ASSETS B.V.

Inventor： Raphael Beumer ,  Werner Bonrath ,  Marc-André Mueller ,  Bettina Wüestenberg

IPC: C07C67/293 ,  C07B49/00 ,  C07C403/08 ,  C07C403/12 ,  C07C69/145

CPC classification number: C07C67/293 ,  C07B49/00 ,  C07C403/08 ,  C07C403/12 ,  C07C69/145

Abstract: Processes for synthesizing new compounds that may usefully be employed in organic synthesis, especially in the synthesis of vitamin A or β-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin are disclosed. The new compounds are especially useful as intermediates (building blocks) in the synthesis of vitamin A or β-carotene, preferably vitamin A.

公开(公告)号：US12258311B2

公开(公告)日：2025-03-25

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：US11958797B2

公开(公告)日：2024-04-16

申请号：US17603177

申请日：2020-04-03

Applicant: DSM IP ASSETS B.V.

Inventor： Fabrice Aquino ,  Werner Bonrath ,  Marc-André Mueller ,  Bettina Wuestenberg

IPC: C07C49/21 ,  C07C45/67

CPC classification number: C07C49/21 ,  C07C45/67 ,  C07C2601/16

Abstract: The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A.

公开(公告)号：US11851402B2

公开(公告)日：2023-12-26

申请号：US17603114

申请日：2020-04-03

Applicant: DSM IP ASSETS B.V.

Inventor： Werner Bonrath ,  Marc-André Mueller ,  Bettina Wuestenberg

IPC: C07C5/327 ,  C07C67/44 ,  C07C67/02 ,  C07C69/145 ,  C07C69/24 ,  C07C5/44 ,  C07C403/14

CPC classification number: C07C5/327 ,  C07C5/44 ,  C07C67/02 ,  C07C67/44 ,  C07C69/145 ,  C07C69/24 ,  C07C403/14 ,  C07C2601/16

Abstract: The present invention relates to a new dehydrogenation process of specific compounds.