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    METHOD FOR MANUFACTURING 2-HYDROXY-4-(METHYLTHIO)BUTYRIC ACID
    1.
    发明申请
    METHOD FOR MANUFACTURING 2-HYDROXY-4-(METHYLTHIO)BUTYRIC ACID 有权

    公开(公告)号：US20210188769A1

    公开(公告)日：2021-06-24

    申请号：US16624323

    申请日：2018-03-09

    Applicant: ADISSEO FRANCE S.A.S.

    Inventor： Virginie BELLIERE-BACA ,  Didier MORVAN

    IPC: C07C323/52 ,  C07C319/12 ,  C07C319/28

    Abstract: A method for manufacturing 2-hydroxy-4-(methylthio)butyric acid (HMTBA) from 2-hydroxy-4-methylthio-butyronitrile (HMTBN), where HMTBN is hydrolyzed into HMTBA in the presence of a mineral acid in an aqueous medium, the medium is neutralized by addition of a base, a first phase including at least HMTBA and salts and a second phase containing salts are separated, the method including the separation of the HMTBA from the salts of the first phase, by subjecting the latter to a chromatography.

    PROCESS FOR PREPARING A COMPOUND OF FORMULA RSH BY HYDROSULFURIZATION
    3.
    发明申请
    PROCESS FOR PREPARING A COMPOUND OF FORMULA RSH BY HYDROSULFURIZATION 有权

    公开(公告)号：US20220127222A1

    公开(公告)日：2022-04-28

    申请号：US17423267

    申请日：2020-01-16

    Applicant: ADISSEO FRANCE S.A.S.

    Inventor： Virginie BELLIERE-BACA ,  Virginie HARLE ,  Sylvette BRUNET ,  Olivier PERUCH

    IPC: C07C319/06 ,  B01J21/04 ,  B01J23/10 ,  B01J23/00

    Abstract: A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.

    METHOD FOR PREPARING A SULFUR OR SELENISED COMPOUND BY THIOLENE REACTION
    4.
    发明申请
    METHOD FOR PREPARING A SULFUR OR SELENISED COMPOUND BY THIOLENE REACTION 有权

    公开(公告)号：US20250042846A1

    公开(公告)日：2025-02-06

    申请号：US17600460

    申请日：2020-04-02

    Applicant: ADISSEO FRANCE S.A.S.

    Inventor： Virginie BELLIERE-BACA ,  Sébastien PERDRIAU ,  Mylène ROUDIER ,  Jérôme MONBRUN

    IPC: C07C319/18

    Abstract: The invention relates to a method for preparing a compound of formula (I) wherein X is selected from S, Se; R1 is selected from the alkyl, aryl, alkylaryl and heteroaryl groups, possibly carrying one or several function(s), R2, R3 and R4 are selected, independently of each other, amongst H and the alkyl, aryl and alkylaryl groups; or R2 and R4 form together a C5-C10 carbon cycle; R5 is selected from H and the alkyl, aryl and alkylaryl groups, or represents a hydrocarbon group or chain, possibly functionalized, which method comprises the reaction of a compound of formula (IV) [Chem IV] R1—(X)m—R21   (IV) wherein X is selected from S and Se; m=1 or 2; R1 is as defined hereinabove for the compound (I); and if m=1, R21 represents H; if m=2, R21 is selected from the alkyl, aryl and alkylaryl groups. with a compound of formula (V): where R2, R3, R4 and R5 are as defined hereinabove for the compound of formula (I), by irradiation with radiations having a wavelength from 200 to 800 nm in the presence of at least one compound carrying at least one function selected from the alcohol, carboxylic acid, thioether and selenoether functions.

    METHOD FOR PREPARING ACROLEIN FROM GLYCEROL OR GLYCERINE
    7.
    发明申请
    METHOD FOR PREPARING ACROLEIN FROM GLYCEROL OR GLYCERINE 有权
    从甘油或甘油制备丙烯酸的方法

    公开(公告)号：US20140171676A1

    公开(公告)日：2014-06-19

    申请号：US14010724

    申请日：2013-08-27

    Applicant: Centre National De La Recherche Scientifique ,  Adisseo France S.A.S

    Inventor： Virginie BELLIERE-BACA ,  STEPHANE LORIDANT ,  JEAN-MARC MILLET ,  PASCALINE LAURIOL-GARBEY

    IPC: C07C45/66 ,  C07C319/18

    CPC classification number: C07C45/66 ,  B01J23/20 ,  B01J23/92 ,  B01J38/12 ,  C07C45/52 ,  C07C319/18 ,  Y02P20/584 ,  C07C47/22 ,  C07C323/22 ,  C07C323/52 ,  C07C323/58

    Abstract: A method of preparing acrolein from glycerol or glycerine is disclosed. The method includes dehydrating glycerol or glycerine in the presence of a catalyst consisting of at least (a) a mixed oxide of zirconium and at least one metal, said metal being selected from niobium, tantalum and vanadium, or (b) a zirconium oxide and at least one metal oxide, the metal being selected from niobium, tantalum and vanadium, or (c) a silicon oxide and a mixed oxide of zirconium and at least one metal, the metal being selected from tungsten, cerium, manganese, niobium, tantalum, titanium, vanadium and silicon, or (d) a titanium oxide and a mixed oxide of zirconium and at least one metal, said metal being selected from tungsten, cerium, manganese, niobium, tantalum, titanium, vanadium and silicon.

    Abstract translation: 公开了从甘油或甘油制备丙烯醛的方法。 所述方法包括在由至少（a）锆和至少一种金属的混合氧化物组成的催化剂存在下脱水甘油或甘油，所述金属选自铌，钽和钒，或（b）氧化锆和 至少一种金属氧化物，所述金属选自铌，钽和钒，或（c）氧化硅和锆与至少一种金属的混合氧化物，所述金属选自钨，铈，锰，铌，钽 ，钛，钒和硅，或（d）二氧化钛和锆与至少一种金属的混合氧化物，所述金属选自钨，铈，锰，铌，钽，钛，钒和硅。

    Method for preparing 2-hydroxy-4-methylthiobutyronitrile or the selenium equivalent thereof, and applications
    8.
    发明公开
    Method for preparing 2-hydroxy-4-methylthiobutyronitrile or the selenium equivalent thereof, and applications 审中-公开

    公开(公告)号：US20240076267A1

    公开(公告)日：2024-03-07

    申请号：US18280388

    申请日：2022-03-04

    Applicant: ADISSEO FRANCE S.A.S.

    Inventor： Virginie BELLIERE-BACA ,  Aymeric GUINAUDEAU

    IPC: C07C319/20 ,  C07C319/28

    CPC classification number: C07C319/20 ,  C07C319/28

    Abstract: A method for the preparation of the 2-hydroxy-4-methylthiobutyronitrile (HMTBN) or its selenium equivalent (HMSeBN) from hydrocyanic acid and 3-methylthiopropanal (MTP) or the corresponding selenium aldehyde (MSeP) includes the following steps: the molar ratio of the HCN to MTP or to MSeP is adjusted to a value greater than or equal to 1 and the pH is adjusted and maintained at a value greater than or equal to 3.5, to obtain a reaction medium in which the HMTBN or the HMSeBN is formed, then the pH of the reaction medium is lowered to a value less than or equal to 2.5 and the HCN is extracted from the reaction medium, and the HMTBN or the HMSeBN is recovered. The applications of this method are also related.

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