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公开(公告)号：US20220194897A1
公开(公告)日：2022-06-23
申请号：US17603122
申请日：2020-04-03
申请人： DSM IP ASSETS B.V.
IPC分类号： C07C403/12
摘要： The present invention relates to new specific enol esters of formula (I) as well as to a process for their production. In formula (I) R is COR′ where R′ is a C1-C16 alkyl group.
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公开(公告)号：US20230142429A1
公开(公告)日：2023-05-11
申请号：US17915448
申请日：2021-03-22
申请人： DSM IP ASSETS B.V.
IPC分类号： C07D333/48
CPC分类号： C07D333/48
摘要： 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.
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公开(公告)号：US20220204434A1
公开(公告)日：2022-06-30
申请号：US17603177
申请日：2020-04-03
申请人： DSM IP ASSETS B.V.
摘要： 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.
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公开(公告)号：US20240092753A1
公开(公告)日：2024-03-21
申请号：US18261182
申请日：2022-01-14
申请人： DSM IP Assets B.V.
IPC分类号： C07D333/48
CPC分类号： C07D333/48
摘要： The present invention relates to a new process for the production of 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.
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公开(公告)号：US20220194891A1
公开(公告)日：2022-06-23
申请号：US17603114
申请日：2020-04-03
申请人： DSM IP ASSETS B.V.
IPC分类号： C07C69/24 , C07C69/145 , C07C67/02 , C07C67/44
摘要： The present invention relates to a new dehydrogenation process of specific compounds.
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公开(公告)号：US20230125156A1
公开(公告)日：2023-04-27
申请号：US17915453
申请日：2021-03-22
申请人： DSM IP ASSETS B.V.
摘要： The present invention relates to a new process for the production of vitamin A and/or its derivatives.
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公开(公告)号：US20230090098A1
公开(公告)日：2023-03-23
申请号：US17787806
申请日：2020-12-15
申请人： DSM IP Assets B.V.
IPC分类号： C07F7/18
摘要： The present invention relates to the functionalisation of specific 1,3-alpha-dienes. These functionalized 1,3-alpha-dienes are important intermediates in organic synthe-sis (especially in the synthesis of carotenoids, vitamin A and/or vitamin A derivatives).
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公开(公告)号：US20220220071A1
公开(公告)日：2022-07-14
申请号：US17603488
申请日：2020-04-03
申请人： DSM IP ASSETS B.V.
IPC分类号： C07C403/12
摘要： The present invention relates to new specific enol esters of formula (I) as well as to a process for their production by acylation of the corresponding dihydroretinal analogue. In formula (I) R is —COR′ where R′ is a C1-C16 alkyl group.
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公开(公告)号：US20220169590A1
公开(公告)日：2022-06-02
申请号：US17676077
申请日：2022-02-18
申请人： DSM IP ASSETS B.V.
IPC分类号： C07C67/293
摘要： 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.
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公开(公告)号：US20230192605A1
公开(公告)日：2023-06-22
申请号：US17915998
申请日：2021-03-22
申请人： DSM IP ASSETS B.V.
IPC分类号： C07C403/02
CPC分类号： C07C403/02 , C07C2601/16
摘要： The present invention relates to a new process for the production of specific intermediates, which are preferably used in the production of vitamin A and/or vitamin A acetate.
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