公开(公告)号：US20220169590A1

公开(公告)日：2022-06-02

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

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：US20200283368A1

公开(公告)日：2020-09-10

申请号：US16645614

申请日：2018-09-13

Applicant: DSM IP ASSETS B.V.

Inventor： Raphael BEUMER ,  Werner BONRATH ,  Marc-André MUELLER ,  Bettina WÜESTENBERG

IPC: C07C67/293

Abstract: The present invention relates to the compound of formula (I). The invention further relates to the compound of formula (II). The invention further relates to the synthesis of these compounds as well as to their use in organic synthesis, especially in the synthesis of vitamin A or p-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin.

公开(公告)号：US20200277244A1

公开(公告)日：2020-09-03

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.