Method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters
    5.
    发明申请
    Method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters 失效
    6,6,6-三卤代-3,5-二氧代己酸酯的制备方法

    公开(公告)号:US20080161582A1

    公开(公告)日:2008-07-03

    申请号:US12071991

    申请日:2008-02-28

    IPC分类号: C07D309/30

    摘要: A method for the production of 6,6,6-trihalo-3,5-dioxohexanic acid esters of formula (I): in addition to the enols thereof and E and Z isomers, wherein X independently represents fluorine, chlorine or bromine and R1 represents alkyl, cycloalkyl, aryl or aralkyl. A method for the production of enol ethers of formula (Ib): and the enols thereof (E and Z isomers) wherein X and R1 have the above-mentioned meanings.

    摘要翻译: 制备式(I)的6,6,6-三卤代-3,5-二氧代己酸酯的方法:除了其烯醇和I E和Z I之外, >异构体,其中X独立地表示氟,氯或溴,R 1表示烷基,环烷基,芳基或芳烷基。 制备式(Ib)的烯醇醚的方法及其烯醇(E和Z异构体)其中X和R 1具有上述含义。

    Method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters
    6.
    发明授权
    Method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters 失效
    6,6,6-三卤代-3,5-二氧代己酸酯的制备方法

    公开(公告)号:US07351851B2

    公开(公告)日:2008-04-01

    申请号:US10577070

    申请日:2004-10-22

    IPC分类号: C07C69/74 C07C69/66

    摘要: A method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters of formula (I): in addition to the enols thereof and E and Z isomers, wherein X independently represents fluorine, chlorine or bromine and R1 represents alkyl, cycloalkyl, aryl or aralkyl. A method for the production of enol ethers of formula (Ib): and the enols thereof (E and Z isomers) wherein X and R1 have the above-mentioned meanings.

    摘要翻译: 制备式(I)的6,6,6-三卤代-3,5-二氧代己酸酯的方法:除了其烯醇和I E和Z I之外, >异构体,其中X独立地表示氟,氯或溴,R 1表示烷基,环烷基,芳基或芳烷基。 制备式(Ib)的烯醇醚的方法及其烯醇(E和Z异构体)其中X和R 1具有上述含义。

    Acetoacetylated N-phenyl-p-phenylenediamines
    7.
    发明授权
    Acetoacetylated N-phenyl-p-phenylenediamines 失效
    乙酰乙酰化N-苯基 - 对苯二胺

    公开(公告)号:US06949677B2

    公开(公告)日:2005-09-27

    申请号:US10761399

    申请日:2004-01-22

    摘要: Compounds of the general Formula: in which R1 and R2 are at each occurrence independently hydroxyl, C1-6-alkyl, C1-6-alkoxy, halogen, phenyl or phenoxy; R2 is hydroxyl, C1-6-alkyl, C1-6-alkoxy, halogen, phenyl or phenoxy; R3 is C1-6-alkyl; m is an integer from 0 to 4; and n is an integer from 0 to 5.

    摘要翻译: 其中R 1和R 2各自独立地是羟基,C 1-6 - 烷基,C 1〜 烷基 - 烷氧基,卤素,苯基或苯氧基; R 2是羟基,C 1-6 - 烷基,C 1-6 - 烷氧基,卤素,苯基或苯氧基; R 3是C 1-6 - 烷基; m为0〜4的整数; n为0〜5的整数。

    Process for the preparation of robenidine and salts thereof
    8.
    发明授权
    Process for the preparation of robenidine and salts thereof 失效
    制备罗替尼苷及其盐的方法

    公开(公告)号:US06680409B2

    公开(公告)日:2004-01-20

    申请号:US09900409

    申请日:2001-07-06

    IPC分类号: C07C27700

    CPC分类号: C07C281/18 C07C277/08

    摘要: The invention relates to a novel method for producing robenidine and salts thereof of the general formula wherein X denotes a halogen atom. The method uses hydrazine hydrate and a cyano compound YCN as the starting materials, which are first reacted to projuce a diaminoguanidine of the general formula wherein Y denotes a halogen atom or tosyl. This diaminoguanidine is then converted directly, without isolation, by reacting with a p-halobenzaldehyde of the general formula IV to produce the robenidine and salts thereof of general formula I.

    摘要翻译: 本发明涉及生产罗哌啶及其盐的新方法,其中X代表卤素原子。 该方法使用水合肼和氰基化合物YCN作为起始原料,其首先反应以产生一般形式的二氨基胍,Y表示卤素原子或甲苯磺酰基。 然后通过与通式IV的对卤代苯甲醛反应直接转化该二氨基胍,而不分离,以产生通式I的罗哌啶及其盐。

    Process and intermediate products for the production of 5-oxaspiro
[2.4]heptan-6-one
    9.
    发明授权
    Process and intermediate products for the production of 5-oxaspiro [2.4]heptan-6-one 失效
    用于生产5-氧杂螺[2.4]庚-6-酮的方法和中间产物

    公开(公告)号:US5486622A

    公开(公告)日:1996-01-23

    申请号:US417250

    申请日:1995-04-05

    申请人: Paul Hanselmann

    发明人: Paul Hanselmann

    摘要: 5-Oxaspiro[2.4]heptan-6-one: ##STR1## is obtained from [3-(hydroxymethyl)oxetan-3-yl]acetonitrile by reaction with hydrogen bromide and then cyclizing the intermediate product 4,4-bis(bromomethyl)dihydro-2-furanone with zinc. 5-Oxaspiro[2.4]heptan-6-one is an intermediate product for the production of leukotriene antagonists.

    摘要翻译: 5-氧杂螺[2.4]庚-6-酮:通过与溴化氢反应从[3-(羟甲基)氧杂环丁烷-3-基]乙腈获得,然后环化中间产物4,4-双(溴甲基 )二氢-2-呋喃酮与锌。 5-氧杂螺[2.4]庚-6-酮是产生白三烯拮抗剂的中间产物。