公开(公告)号：US20210261488A1

公开(公告)日：2021-08-26

申请号：US17264187

申请日：2019-07-29

Applicant: DSM IP ASSETS B.V.

Inventor： Fabrice AQUINO ,  Werner BONRATH ,  Francesco PACE ,  Peter RUCKSTUHL ,  Konrad WITZGALL

IPC: C07C29/42 ,  B01J23/04

Abstract: The present invention relates to the catalytic ethynlation of αβ-unsaturated ketones for producing tertiary acetylenic alcohols.

公开(公告)号：US20220204434A1

公开(公告)日：2022-06-30

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

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：US20240116842A1

公开(公告)日：2024-04-11

申请号：US18264390

申请日：2022-02-07

Applicant: DSM IP Assets B.V.

Inventor： Fabrice AQUINO ,  Werner BONRATH ,  Francesco PACE

IPC: C07C45/51 ,  C07C45/67

CPC classification number: C07C45/513 ,  C07C45/67

Abstract: The present invention relates to a process of manufacturing of allene ketone using specific ammonium (thio)sulfates or hydrogen (thio)sulfates as catalyst. The reaction provides the allene ketone in high yields and selectivities.

公开(公告)号：US20240308948A1

公开(公告)日：2024-09-19

申请号：US18264160

申请日：2022-02-07

Applicant: DSM IP ASSETS B.V.

Inventor： Fabrice AQUINO ,  Werner BONRATH ,  Francesco PACE

IPC: C07C45/51 ,  B01J31/02

CPC classification number: C07C45/513 ,  B01J31/0285

Abstract: The present invention relates to the manufacture of gamma, delta-unsaturated ketones from tertiary vinyl carbinols and vinylic ethers or ketals using an organic tertiary or quaternary ammonium salt as catalyst.

公开(公告)号：US20240124380A1

公开(公告)日：2024-04-18

申请号：US18264360

申请日：2022-02-07

Applicant: DSM IP Assets B.V.

Inventor： Fabrice AQUINO ,  Werner BONRATH ,  Francesco PACE

IPC: C07C45/45

CPC classification number: C07C45/45 ,  C07C2527/24

Abstract: The present invention relates to a process of manufacturing of allene ketone using specific ammonium (thio)sulfates or hydrogen (thio)sulfates as catalyst. The reaction provides the allene ketone in high yields and selectivities.