Process for the selective alkylation of aldehydes by means of organozinc compounds
    5.
    发明授权
    Process for the selective alkylation of aldehydes by means of organozinc compounds 有权
    通过有机锌化合物选择性烷基化醛的方法

    公开(公告)号:US06184404B2

    公开(公告)日:2001-02-06

    申请号:US09258927

    申请日:1999-03-01

    IPC分类号: C07F306

    摘要: There is described a process for the enantioselective alkylation of aldehydes by means of organozinc compounds, of which a ligand of the zinc is transferred to the aldehyde, and the other ligand acts as so-called dummy ligand. As novel substances there are used zinc-organic compounds, which contain the neophyl residue as dummy ligand.

    摘要翻译: 描述了通过有机锌化合物对对映选择性烷基化醛的方法,其中锌的配体被转移到醛中,另一个配体作为所谓的虚拟配体。 作为新物质,使用锌 - 有机化合物,其含有作为虚拟配体的叶酸残基。

    PREPARATION AND USE OF MAGNESIUM AMIDES
    6.
    发明申请
    PREPARATION AND USE OF MAGNESIUM AMIDES 审中-公开
    镁粉的制备和使用

    公开(公告)号:US20100144516A1

    公开(公告)日:2010-06-10

    申请号:US12522494

    申请日:2008-01-04

    IPC分类号: B01J31/12

    CPC分类号: C07B49/00 C07F3/003 C07F3/02

    摘要: The present application relates to mixed Mg/Li amides of the general formula R1R2N—Mg—NR3R4.zLiY (II) wherein R1, R2, R3, and R4 are, independently, selected from H, substituted or unsubstituted aryl or heteroaryl containing one or more heteroatoms, linear, branched or cyclic, substituted or unsubstituted alkyl, alkenyl, alkynyl, or silyl derivatives thereof; and R1 and R2 together, or R3 and R4 together can be part of a cyclic or polymeric structure; and wherein at least one of R1 and R2 and at least one of R3 and R4 is other than H; Y is selected from the group consisting of F; Cl; Br; I; CN; SCN; NCO; HaIOn, wherein n=3 or 4 and Hal is selected from Ci, Br and I; NO3; BF4; PF6; H; a carboxylate of the general formula RxCO2; an alcoholate of the general formula ORx; a thiolate of the general formula SRx; RxP(O)O2; or SCORx; or SCSRx; OnSRx, wherein n=2 or 3; or NOn, wherein n=2 or 3; and a derivative thereof; wherein RX is a substituted or unsubstituted aryl or heteroaryl containing one or more heteroatoms, linear, branched or cyclic, substituted or unsubstituted alkyl, alkenyl, alkynyl, or derivatives thereof, or H; m is O or 1; and z>1; as well as a process for the preparation of the mixed Mg/Li amides and the use of these amides, e.g. as bases.

    摘要翻译: 本申请涉及通式为R1R2N-Mg-NR3R4.zLiY(Ⅱ)的混合Mg / Li酰胺,其中R 1,R 2,R 3和R 4独立地选自H,取代或未取代的芳基或杂芳基, 更多的杂原子,直链,支链或环状的取代或未取代的烷基,烯基,炔基或甲硅烷基衍生物; R 1和R 2一起,或者R 3和R 4一起可以是环状或聚合物结构的一部分; 并且其中R 1和R 2以及R 3和R 4中的至少一个不是H; Y选自F; Cl; Br; 一世; CN; SCN; NCO; 其中n = 3或4,Hal选自C 1,Br和I; NO3; BF4; PF6; H; 通式为RxCO2的羧酸酯; 通式为ORx的醇化物; 通式SRx的硫醇盐; RxP(O)O2; 或SCORx; 或SCSRx; OnSRx,其中n = 2或3; 或NO n,其中n = 2或3; 及其衍生物; 其中RX是具有一个或多个杂原子的取代或未取代的芳基或杂芳基,其为直链,支链或环状的取代或未取代的烷基,烯基,炔基或其衍生物,或H; m为O或1; 和z> 1; 以及制备混合的Mg / Li酰胺的方法和这些酰胺的使用,例如。 作为基础。

    Aqueous polyurethane dispersions obtained by the use of caesium salts
    7.
    发明申请
    Aqueous polyurethane dispersions obtained by the use of caesium salts 审中-公开
    通过使用铯盐获得的水性聚氨酯分散体

    公开(公告)号:US20070203289A1

    公开(公告)日:2007-08-30

    申请号:US11797004

    申请日:2007-04-30

    IPC分类号: C08K3/00 C08G18/08

    摘要: Aqueous dispersions comprising a polyurethane composed of a) diisocyanates, b) diols of which b1) from 10 to 100 mol %, based on the total amount of diols (b), have a molecular weight of from 500 to 5000, and b2) from 0 to 90 mol %, based on the total amount of diols (b), have a molecular weight of from 60 to 500 g/mol, c) monomers other than the monomers (a) and (b), containing at least one isocyanate group or at least one isocyanate-reactive group and further carrying at least one hydrophilic group or potentially hydrophilic group by means of which the polyurethane is made dispersible in water, d) if desired, further, polyfunctional compounds other than the monomers (a) to (c), containing reactive groups which are alcoholic hydroxyl groups, primary or secondary amino groups or isocyanate groups, and e) if desired, monofunctional compounds which are other than the monomers (a) to (d) and contain a reactive group which is an alcoholic hydroxyl group, a primary or secondary amino group or an isocyanate group, obtainable by reacting the monomers a), b), c), and, where used, d) and e) in the presence of a cesium salt.

    摘要翻译: 基于二醇(b)的总量,包含由a)二异氰酸酯,b)二醇组成的聚氨酯,b)二醇,其中b 1〜10摩尔%的分子量为 500〜5000,b 2 O 2)为0〜90摩尔%,基于二醇(b)的总量,分子量为60〜500g / mol,c)单体等 包含至少一个异氰酸酯基团或至少一个异氰酸酯反应性基团的单体(a)和(b)),并进一步携带至少一个亲水基团或潜在的亲水基团,通过该基团将聚氨酯分散在水中,d )另外,除单体(a)〜(c)以外还含有醇性羟基,伯或仲氨基或异氰酸酯基的反应性基团的多官能化合物,以及e)如果需要,除单体 单体(a)〜(d),含有醇性羟基的反应性基团 仲氨基或异氰酸酯基团,可通过使单体a),b),c)和d d)和e)在铯盐存在下反应而得到。

    Organozinc complexes and processes for making and using the same
    10.
    发明授权
    Organozinc complexes and processes for making and using the same 有权
    有机锌配合物及其制备和使用方法

    公开(公告)号:US09273070B2

    公开(公告)日:2016-03-01

    申请号:US13996953

    申请日:2011-12-21

    摘要: Processes for making an organozinc reagents are disclosed comprising reacting (A) organomagnesium or organozinc complexes with (B) at least one coordination compound comprising one or more carboxylate groups and/or alcoholate groups and/or tertiary amine groups, optionally in combination with zinc ions and/or lithium ions and/or halide ions, wherein the halide ions are selected from chloride, bromide and iodide, the organozinc complex comprises an aryl group, a heteroaryl group or a benzyl group when the coordinating compound is a chelating polyamine, and the reaction is conducted in the presence of zinc complexed with at least one coordinating compound when reactant (A) comprises at least one organomagnesium complex. The resulting organozinc reagents may optionally be isolated from solvents to obtain a solid reagent. The reagents may be used for making organic compounds via Negishi cross-coupling reactions or via aldehyde and/or ketone oxidative addition reactions. The organozinc reagents are stable and, due to their high selectivity, permit maintenance of sensitive functional groups such as aldehydes during cross-coupling.

    摘要翻译: 公开了制备有机锌试剂的方法,其包括使(A)有机镁或有机锌络合物与(B)至少一种包含一个或多个羧酸酯基团和/或醇化物基团和/或叔胺基团的配位化合物,任选与锌离子 和/或锂离子和/或卤离子,其中卤离子选自氯化物,溴化物和碘化物,当配位化合物是螯合多胺时,有机锌络合物包括芳基,杂芳基或苄基, 当反应物(A)包含至少一个有机镁络合物时,在与至少一种配位化合物络合的锌的存在下进行反应。 所得到的有机锌试剂可以任选地从溶剂中分离以获得固体试剂。 试剂可用于通过Negishi交叉偶联反应或通过醛和/或酮氧化加成反应制备有机化合物。 有机锌试剂是稳定的,并且由于其高选择性,允许在交联期间维持敏感官能团如醛。