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    PHOSPHORUS-CONTAINING COMPOUND
    33.
    发明专利
    PHOSPHORUS-CONTAINING COMPOUND 失效

    公开(公告)号：JPH04321695A

    公开(公告)日：1992-11-11

    申请号：JP9087191

    申请日：1991-04-22

    Applicant: TOKUYAMA SODA KK

    Inventor： KAZAMA HIDEKI ,  MATSUOKA SHINGO

    IPC: C07F9/201 ,  C07F9/46 ,  C07F9/48 ,  C07F9/50

    Abstract: PURPOSE:To provide a new phosphorus-containing compound useful as a material for optical lens, capable of giving resins of high refractive index and low specific gravity excellent in transparency and weatherability, etc. CONSTITUTION:The objective compound of formula I [A1 is (R4-X1)m, (R4-X1)n-R5 (X1 is O or S; R4 and R5 are each alkylene, phenylene, etc.), etc.; R1 is H or methyl; R2 and R3 are alkyl, aryl, etc.], for example, a compound of formula II. The present compound can be obtained e.g. by reaction at -50 to 50 deg.C for 30min to 12hr in an organic solvent such as THF between (A) compound(s) of formula III and/or IV (X is halogen) and (B) a halogenated phosphorus compound of formula V (Z is halogen).

    IMPROVED PREPARATIONS OF THIOPHOSPHITES AND THIOPHOSPHONATES
    40.
    发明申请
    IMPROVED PREPARATIONS OF THIOPHOSPHITES AND THIOPHOSPHONATES 审中-公开
    改善硫代磷酸酯和硫代磷酸酯的制备

    公开(公告)号：WO00066598A1

    公开(公告)日：2000-11-09

    申请号：PCT/US2000/011940

    申请日：2000-05-03

    IPC: C07F9/201 ,  C07F9/40 ,  C07F9/16

    CPC classification number: C07F9/4065 ,  C07F9/201

    Abstract: Improved methods for converting phosphite or phosphonate esters into corresponding thiophosphites or thiophosphonates and for synthesizing specific thiophosphite and thiophosphonate compounds so produced are disclosed and claimed. The methods start from phosphite diesters using P4S10 as the thionation reagent. The reaction mixture is refluxed until the reaction is complete and may be followed by separation and chloroformate ester phosphonation steps to produce pure thiophosphonocarboxylate triesters. Alternatively, these esters may be prepared directly by action of P4S10 on the corresponding phosphonocarboxylate esters. The former method was used to prepare dimethyl thiophosphite and thence trimethyl thiophosphonoformate, a key intermediate in synthesis of salts of thiophosphonoformic acid, which have anti-viral properties.

    Abstract translation: 公开和要求保护的方法将亚磷酸酯或膦酸酯转化成相应的硫代亚磷酸酯或硫代膦酸酯并合成特定的硫代亚磷酸酯和硫代膦酸酯化合物。 该方法从使用P4S10作为硫化试剂的亚磷酸二酯开始。 将反应混合物回流直到反应完成，然后分离和氯甲酸酯膦酸化步骤以产生纯的硫代膦酰基羧酸酯三酯。 或者，这些酯可以通过P4S10在相应的膦酰基羧酸酯上的作用直接制备。 使用前一种方法制备二硫代亚磷酸二甲酯，然后制备硫代膦酰甲酸三甲酯，这是合成硫代膦酰甲酸盐的关键中间体，具有抗病毒性质。

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