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    MULTI-RING ANTIOXIDANTS WITH ANTIWEAR PROPERTIES
    2.
    发明申请
    MULTI-RING ANTIOXIDANTS WITH ANTIWEAR PROPERTIES 审中-公开
    具抗静电性能的多环氧化物

    公开(公告)号：WO2010011523A3

    公开(公告)日：2010-04-15

    申请号：PCT/US2009050410

    申请日：2009-07-13

    Applicant: ALBEMARLE CORP ,  SABAHI MAHMOOD

    Inventor： SABAHI MAHMOOD

    IPC: C07C323/19

    CPC classification number: C10L1/2412 ,  C07C319/20 ,  C07C319/22 ,  C07C323/18 ,  C09K15/14 ,  C09K15/28 ,  C10M135/30 ,  C10M2219/087 ,  C10N2230/04 ,  C10N2230/10

    Abstract: Described are multi-ring antioxidant products comprising at least one sulfur- bridged aromatic hydrocarbon compound substituted on at least one of its aromatic rings by at least one sterically hindered 3,5-dihydrocarbyl-4-hydroxybenzyl moiety. Such products have the formula : R-Sn-R[-S-R]m wherein each R is, independently, an aromatic hydrocarbon group having 6-12 carbon atoms, wherein m is 0-20, wherein n is 1-6 when m is 0, and when n is 1, m is 1-20; and wherein at least one of R, R1, and R2 is substituted by at least one such sterically hindered moiety. The preparation of such products and their use as antioxidants in compositions normally susceptible to oxidative degradation in oxygen or air, e.g., liquid fuel and lubricants, are also described.

    Abstract translation: 描述的是包含至少一个硫桥连的芳族烃化合物的多环抗氧化剂产物，其通过至少一个空间位阻的3,5-二烃基-4-羟基苄基部分在其至少一个芳环上被取代。 这些产物具有下式：R-Sn-R [-SR] m，其中每个R独立地为具有6-12个碳原子的芳族烃基，其中m为0-20，其中当m为m时，n为1-6 0，当n为1时，m为1-20; 并且其中R，R 1和R 2中的至少一个被至少一个这样的空间位阻部分取代。 还描述了这样的产物的制备及其作为抗氧化剂在通常易于氧气或空气中的氧化降解的组合物中的用途，例如液体燃料和润滑剂。

    Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof
    3.
    发明申请
    Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof 审中-公开
    制备外消旋的2-（6-甲氧基-2-萘基）丙酸或其前体

    公开(公告)号：WO9830528A3

    公开(公告)日：1998-08-13

    申请号：PCT/US9724024

    申请日：1997-12-29

    Applicant: ALBEMARLE CORP

    Inventor： SABAHI MAHMOOD ,  THERIOT KEVIN J ,  BECNEL BRIAN F

    IPC: B01J31/34 ,  C07B61/00 ,  C07C29/58 ,  C07C37/00 ,  C07C39/38 ,  C07C41/09 ,  C07C41/16 ,  C07C41/30 ,  C07C41/40 ,  C07C41/42 ,  C07C43/215 ,  C07C43/225 ,  C07C51/09 ,  C07C51/14 ,  C07C59/64 ,  C07C59/72 ,  C07C67/343 ,  C07C69/734 ,  C07F3/02 ,  C07F3/06 ,  C07F1/02 ,  C07F3/00

    CPC classification number: C07C41/16 ,  C07C29/58 ,  C07C59/64 ,  C07C43/225 ,  C07C43/215

    Abstract: In producing (±)-2-(6-methoxy-2-naphthyl)propionic acid or precursor thereof from 2-bromo-6-methoxynaphthalene, use is made of 2-bromo-6-methoxynaphthalene formed by (a) methylating 6-bromo-2-naphthol with methyl chloride in a solvent comprising one or more compounds, RZ, where R is a hydrogen atom or an alkyl group, and Z is -OH or -CN provided that if Z is -CN, R is alkyl, and in the presence of a strong base; and (b) recovering and purifying 2-bromo-6-methoxynaphthalene so formed. Preferably, the 6-bromo-2-naphthol is formed by (1) reacting 1,6-dibromo-2-naphthol with hydrogen, in a solvent comprising (a) organic halide in which the halogen has an atomic number of 35 or less or (b) a mixture of water and such organic halide, and in the presence of catalytically effective amounts of (i) a tungsten carbide-based catalyst, and (ii) phase transfer catalyst; and (2) separating 6-bromo-2-naphthol from the organic halide solvent so that the 6-bromo-2-naphthol is substantially free of halogen-containing impurities before use in the above methylation reaction. This technology makes possible reductions in quantities of co-products formed, eliminates need for use of excess iron and/or dimethyl sulfate as reaction components, and makes possible improvements in plant operating efficiency. Precursors of (±)-2-(6-methoxy-2-naphthyl)propionic acid formed from such 2-bromo-6-methoxynaphthalene are Grignard reagent of 2-bromo-6-methoxynaphthalene, bis(6-methoxy-2-naphthyl)zinc, 6-methoxy-2-naphthylzinc halide, 6-methoxy-2-naphthyllithium, 6-methoxy-2-naphthylcopper (I), bis(6-methoxy-2-naphthyl)cadmium, 6-methoxy-2-naphthylcadmium halide, and 6-methoxy-2-vinylnaphthalene.

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