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167 条记录 (耗时 0.026 秒)

    Method for synthesising vitamin A
    2.
    发明授权
    Method for synthesising vitamin A 有权

    公开(公告)号：US11365169B2

    公开(公告)日：2022-06-21

    申请号：US17269096

    申请日：2019-08-19

    申请人： ADISSEO FRANCE S.A.S.

    发明人： Patrick Rey ,  Robert Huet ,  Jean-Michel Joerger ,  Vivien Henryon

    IPC分类号： C07C45/65 ,  C07C29/17 ,  C07C315/00 ,  C07C47/225 ,  C07C315/02

    摘要： A method for preparing a compound of formula (I) in which R1 is selected from H and alkyls, R2 is selected from H, alkyls, OR′ where R′ is selected from alkyls, silyls, CO-alkyl, R3 is selected from the acyl groups of the CO(R″) type, and the CO(OR″), CO(NR″R′″), PO(OR″)(OR′″), PO(OR″)(R′″) groups where R″ and R′″, independently of each other, are selected from H and alkyls, R represents a C(R4)═C(R5)(R6) group where R4, R5 and R6, independently of each other, are selected from H, linear or cyclic alkyls and alkenyls, aryls, alkylaryls, or R4 and R5 together form a saturated or unsaturated, substituted or unsubstituted ring, from a compound of formula (II) or a compound of formula (III) in which, R, R1, R2 and R3 have the above definition.

    Cyclopropyl ring opening by alpha alkylation of an aldehyde with a polycyclic olefin
    3.
    发明授权
    Cyclopropyl ring opening by alpha alkylation of an aldehyde with a polycyclic olefin 有权

    公开(公告)号：US11267776B2

    公开(公告)日：2022-03-08

    申请号：US16972081

    申请日：2019-10-14

    申请人： FIRMENICH SA

    发明人： Julie Quintaine

    IPC分类号： C07C45/68 ,  C11B9/00 ,  C07C47/225

    摘要： Described herein is a process including alpha alkylation of an aldehyde with a polycyclic olefin followed by a ring opening step in order to provide a compound of formula in a form of any one of its stereoisomers or a mixture thereof and where n represents 1 to 4 and R2 to R5 represent independently of each other, a hydrogen atom or a C1-6 linear alkyl group or a C3-6 branched alkyl group; and R3 and R4 or R5 or, alternatively, R2 and R3 when taken together form a saturated or unsaturated optionally substituted 5 or 6 membered carbocyclic ring.

    Lily of the valley odorant
    6.
    发明授权
    Lily of the valley odorant 有权

    公开(公告)号：US10472591B2

    公开(公告)日：2019-11-12

    申请号：US16333086

    申请日：2017-12-18

    申请人： FIRMENICH SA

    发明人： Christian Chapuis

    IPC分类号： C11D3/50 ,  C11B9/00 ,  C07C47/225 ,  A61Q19/10 ,  A61K8/33 ,  A61Q5/02 ,  C11D3/20

    摘要： The present invention concerns a compound of formula (I) in the form of any one of its stereoisomers or as a mixture thereof, and wherein carbon 4 of the cyclohexenyl group has an absolute S configuration and R represents a hydrogen atom or a methyl group and their use in perfumery to impart odor notes of white peach and floral type.