Preparation of aminophosphines
    32.
    发明授权
    Preparation of aminophosphines 失效
    制备氨基膦

    公开(公告)号:US06906213B1

    公开(公告)日:2005-06-14

    申请号:US10876492

    申请日:2004-06-25

    Inventor: Neil Warren Boaz

    Abstract: Disclosed is a process for the preparation of phosphine-aminophosphines that are useful in the formation of catalysts useful in carrying out a wide variety of reactions such as asymmetric hydrogenations, asymmetric reductions, asymmetric hydroborations, asymmetric olefin isomerizations, asymmetric hydrosilations, asymmetric allylations, asymmetric conjugate additions, and asymmetric organometallic additions. The process comprises the steps of (1) contacting a compound of formula 2 R2P—L—NHR3  2 with phosphorus trihalide PX3 in the presence of an inert, organic solvent and an acid acceptor to produce intermediate compound having formula 3 (2) contacting intermediate compound 3 with a reactant having the formula R1—M1, R2—M1 or a mixture thereof.

    Abstract translation: 公开了一种制备膦 - 氨基膦的方法,其可用于形成可用于进行各种各样的反应的催化剂,例如不对称氢化,不对称还原,不对称氢化,不对称烯烃异构化,不对称氢化硅,不对称烯丙基化,不对称烯丙基化 共轭添加物和不对称有机金属添加剂。 该方法包括以下步骤:(1)使式2的化合物<?in-line-formula description =“In-Line Formulas”end =“lead”→> R 2 PL-NHR < 在惰性有机物的存在下,使用三卤代磷酸酯PX 3将“3”在线式描述=“In-line Formula”end =“tail”?> 溶剂和酸受体以产生具有式3(2)的中间体化合物,使中间体化合物3与具有式R 1,M 2,R 2, 或其混合物。

    Process for the production of chiral unsaturated alcohols in high
optical purity
    36.
    发明授权
    Process for the production of chiral unsaturated alcohols in high optical purity 失效
    用于生产高光学纯度的手性不饱和醇的方法

    公开(公告)号:US5886214A

    公开(公告)日:1999-03-23

    申请号:US839477

    申请日:1997-04-14

    Inventor: Neil Warren Boaz

    CPC classification number: C07C67/283

    Abstract: The catalytic asymmetric hydrogenation of enol esters with a vinyllic or acetylenic substituent proceeds with extremely high enantioselectivity using a Rhodium-chiral bisphosphine catalyst. This is at variance with the hydrogenation of enol esters bearing a saturated substituent, which are hydrogenated with only marginal enantioselectivity under the same conditions.

    Abstract translation: 烯醇酯与乙烯基或炔属取代基的催化不对称氢化使用铑手性双膦催化剂进行极高的对映选择性。 这与具有饱和取代基的烯醇酯的氢化不同,在相同条件下氢化仅具有边际对映选择性。

    CARBONATE DERIVATIVES AS SKIN CARE
    40.
    发明申请
    CARBONATE DERIVATIVES AS SKIN CARE 有权
    碳酸钙衍生物作为皮肤护理

    公开(公告)号:US20120059056A1

    公开(公告)日:2012-03-08

    申请号:US12975562

    申请日:2010-12-22

    Inventor: Neil Warren Boaz

    Abstract: Carbonates of anti-aging ingredients, in particular anti-oxidants and skin illuminating phenol ingredients, have been prepared as derivatives of these ingredients with enhanced physical properties. It has been demonstrated that these carbonates will hydrolyze under enzymatic catalysis to release the parent ingredient. In contrast, esters of the phenolic groups in many cases do not hydrolyze under the same conditions.

    Abstract translation: 已经制备了抗衰老成分的碳酸盐,特别是抗氧化剂和皮肤照射酚成分,作为具有增强物理性质的这些成分的衍生物。 已经证明这些碳酸酯将在酶催化下水解以释放母体成分。 相反,在许多情况下酚基的酯在相同的条件下不会水解。

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