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    Cyclopentadienes in which at least four of the ring carbons carry cyano substituents and methods for their preparation
    2.
    发明授权
    Cyclopentadienes in which at least four of the ring carbons carry cyano substituents and methods for their preparation 失效
    环戊二烯环戊二烯作为碳环的碳原子取代基及其制备方法

    公开(公告)号：US3853943A

    公开(公告)日：1974-12-10

    申请号：US4653070

    申请日：1970-06-15

    申请人： DU PONT

    发明人： WEBSTER O

    IPC分类号： C06B43/00 ,  C07F9/54 ,  C09B62/026 ,  A01N9/20 ,  C06B15/00 ,  C07C121/48

    CPC分类号： C06B43/00 ,  C07F9/54 ,  C09B62/026

    摘要： Cyclization of a dialkali metal salt of 1,1,2,3-4,4-hexacyano-2butenediide with acid yeilds 1-amino-2,3-4,5,5pentacyanocyclopentadiene which is converted to 1-amino-2,34,5,5-tetracyanocyclopentadiene which is converted to 1-amino2,3,4,5-tetracyanocyclopentadiene with strong mineral acid. Reaction of the pentacyanocyclopentadiene with nitrous acid gives 1-diaza-2,3,4,5-tetracyanocyclopentadiene which can be reacted with trialkyl or triaryl phosphorus to give 1-tri(aryl or alkyl)phosphazino-2,3,4,5-tetracyanocyclopentadiene. The diazotetracyanocyclopentadiene compound can be reacted with alkali metal compounds preferably under reducing condition to yield salts wherein the diazo group is replaced with hydrogen, amino, cyano, hydroxy, carboxy, alkoxycarbonyl, alkyl, aryl, phydroxyphenyl, nitro and mercapto groups. The cyanocyclopentadiene compounds are useful as rodenticides and as rocket propellants.

    摘要翻译： 通过酸性1-氨基-2,3,4,5,5-五氰基环戊二烯将1,1,2,3-4,4-六氰基-2-丁烯二酸的二碱金属盐环化，将其转化为1-氨基 - 用强无机酸转化为1-氨基-2,3,4,5-四氰基环戊二烯的2,3,4,5,5-四氰基环戊二烯。 五氰基环戊二烯与亚硝酸的反应得到可与三烷基或三芳基磷反应的1-二氮杂-2,3,4,5-四氰基环戊二烯，得到1-三（芳基或烷基）膦酰基-2,3,4,5-四 四氰基环戊二烯。 重氮四氰基环戊二烯化合物可以优选在还原条件下与碱金属化合物反应，得到盐，其中重氮基被氢，氨基，氰基，羟基，羧基，烷氧基羰基，烷基，芳基，对羟基苯基，硝基和巯基取代。 氰基环戊二烯化合物可用作灭鼠剂和火箭推进剂。

    1-hydrocarbon-substituted 2-halo-4,5-dicyanoimidazoles and their preparation
    3.
    发明授权
    1-hydrocarbon-substituted 2-halo-4,5-dicyanoimidazoles and their preparation 失效
    1-烃取代的2-羟基-4,5-二脱氧尿嘧啶及其制备方法

    公开(公告)号：US3793339A

    公开(公告)日：1974-02-19

    申请号：US3793339D

    申请日：1972-04-07

    申请人： DU PONT

    发明人： WEBSTER O

    IPC分类号： C07D233/90 ,  C07D49/36

    CPC分类号： C07D233/90

    摘要： PYROLYSIS OF 2-DIAZO-4,5-DICYANO-2H-IMIDAZOLE IN THE PRESENCE OF CERTAIN HALOHYDROCARBONS YIELDS 1 SUBSTITUTED-2-HALO-4,5-DICYANOIMIDAZOLES. -HYDROCARBON
    PYR LYSUS OF THE SAME STARTING MATERIAL IN THE PRESENCE OF HYDROCARBONS, CERTAIN OTHER HALOHYDROCARBONS, OR CERTAIN GROUP I METAL SALTS, YIELDS 2-SUBSTITUTED-4,5-DICYANOIMIDAZOLES.

    2-substituted-4,5-dicyanoimidazoles
    4.
    发明授权
    2-substituted-4,5-dicyanoimidazoles 失效
    2-取代的-4,5-二氰基咪唑

    公开(公告)号：US3770764A

    公开(公告)日：1973-11-06

    申请号：US3770764D

    申请日：1971-05-25

    申请人： DU PONT

    发明人： WEBSTER O

    IPC分类号： C07D233/90 ,  C07D49/36

    CPC分类号： C07D233/90

    摘要： CYANOGEN CHLORIDE REACTS WITH DIAMINOMALENITRILE AT ABOUT AMBIENT TEMPERATURE TO PRODUCE 2-AMINO-4,5-DICYANOIMIDAZOLE. REACTION OF THE PRODUCT WITH ACID AND AN ALKALI METAL NITRITE GIVES 2-DIAZO-4,5-DICYANO-2H-IMIDAZOLE, WHICH IS USEFUL AS AN EXPLOSIVE. THE 2-AMINO-4,5DICYANOIMIDAZOLE IS USEFUL AS A CHEMICAL INTERMEDIATE AND AS A BUFFERING AGENT.