Method for preparing pyridine-2,3-dicarboxylic acid esters
    1.
    发明授权
    Method for preparing pyridine-2,3-dicarboxylic acid esters 失效
    制备吡啶-2,3-二羧酸酯的方法

    公开(公告)号:US07009058B1

    公开(公告)日:2006-03-07

    申请号:US09568993

    申请日:2000-05-11

    IPC分类号: C07D213/80 C07D213/803

    摘要: A method for preparing pyridine-2,3-dicarboxylic acid esters of the general formula: wherein R is C1-6-alkyl, C3-6-cycloalkyl, aryl or arylalkyl, and R1 to R3, independently of one another, represent hydrogen, C1-6-alkyl, fluorinated C1-6-alkyl, C1-6-alkoxy, (C1-6-alkoxy)-C1-6-alkyl or (C1-6-alkoxy)carbonyl. These esters are obtained from the corresponding 2,3-dichloropyridine, the corresponding alcohol ROH and carbon monoxide in the presence of a palladium-diphosphine complex and a weak base. Pyridine-2,3-dicarboxylic acid esters are herbicides or intermediates for the preparation of herbicides.

    摘要翻译: 制备以下通式的吡啶-2,3-二羧酸酯的方法:其中R是C 1-6 - 烷基,C 3-6 - 环烷基,芳基 或芳基烷基,R 1至R 3彼此独立地表示氢,C 1-6 - 烷基,氟化C

    Process for preparing pyridinecarboxylic esters
    2.
    发明授权
    Process for preparing pyridinecarboxylic esters 失效
    制备吡啶羧酸酯的方法

    公开(公告)号:US6162921A

    公开(公告)日:2000-12-19

    申请号:US399744

    申请日:1999-09-20

    摘要: A process for preparing pyridinecarboxylic esters of the general formula: ##STR1## wherein R.sup.1 is hydrogen, a C.sub.1 -C.sub.6 -alkyl group, a C.sub.1 -C.sub.4 -alkoxycarbonyl group or a C.sub.1 -C.sub.4 -alkoxymethyl group, R.sup.2 is a C.sub.1 -C.sub.4 -alkyl group and X is chlorine or bromine. The pyridinecarboxylic esters are obtained by reacting the corresponding 2,3-dihalopyridines with carbon monoxide and a C.sub.1 -C.sub.4 -alkanol in the presence of a weak base and a complex of palladium with a bis(diphenylphosphine). Pyridinecarboxylic esters are intermediates for preparing herbicides and drugs against fibrotic diseases.

    摘要翻译: 一种制备通式如下的吡啶羧酸酯的方法:其中R 1是氢,C 1 -C 6烷基,C 1 -C 4烷氧基羰基或C 1 -C 4烷氧基甲基,R 2是C 1 -C 4烷基和 X是氯或溴。 吡啶羧酸酯通过在弱碱和钯与双(二苯基膦)的络合物存在下,使相应的2,3-二卤代吡啶与一氧化碳和C 1 -C 4烷醇反应而获得。 吡啶羧酸酯是制备除草剂和抗纤维化疾病药物的中间体。

    Process for preparing pyridinecarboxylic esters
    4.
    发明授权
    Process for preparing pyridinecarboxylic esters 失效
    制备吡啶羧酸酯的方法

    公开(公告)号:US06169183A

    公开(公告)日:2001-01-02

    申请号:US09238506

    申请日:1999-01-27

    IPC分类号: C07D21330

    摘要: A process for preparing pyridinecarboxylic esters of the general formula: wherein R1 is hydrogen, a C1-6-alkyl group, a C1-4-alkoxycarbonyl group, a C1-4-alkoxymethyl group or a fluorinated C1-6-alkyl group, R2 is a C1-4-alkyl group and X is chlorine or bromine. The pyridinecarboxylic esters are obtained by reacing the corresponding 2,3-dihalopyridines with carbon monoxide and a C1-4-alkanol in the presence of a weak base and a complex of palladium with a bis(diphenylphosphine). Pyridinecarboxylic esters are intermediates for preparing herbicides and drugs against fibrotic diseases.

    摘要翻译: 一种制备通式如下的吡啶羧酸酯的方法:其中R1是氢,C1-6烷基,C1-4烷氧基羰基,C1-4烷氧基甲基或氟化C1-6烷基,R2 是C 1-4 - 烷基,X是氯或溴。 吡啶羧酸酯通过在弱碱和钯与双(二苯基膦)的络合物存在下,用一氧化碳和C 1-4链烷醇取代相应的2,3-二卤代吡啶而得到。 吡啶羧酸酯是制备除草剂和抗纤维化疾病药物的中间体。

    Method for preparing pyrimidin-2-ylacetic acid esters
    6.
    发明授权
    Method for preparing pyrimidin-2-ylacetic acid esters 失效
    制备嘧啶-2-基乙酸酯的方法

    公开(公告)号:US5821368A

    公开(公告)日:1998-10-13

    申请号:US889442

    申请日:1997-07-08

    CPC分类号: C07D239/52

    摘要: A method for preparing pyrimidin-2-ylacetic acid esters of the general formula: ##STR1## wherein R is C.sub.1-6 -alkyl, C.sub.3-6 -cycloalkyl, aryl or arylalkyl and R.sup.1 to R.sup.3, independently of one another, are hydrogen, C.sub.1-6 -alkyl, fluorinated C.sub.1-6 -alkyl, C.sub.1-6 -alkoxy, (C.sub.1-6 -alkoxy)-C.sub.1-6 -alkyl or (C.sub.1-6 -alkoxy)carbonyl. These esters are obtained from the corresponding 2-(halomethyl)-pyrimidine, the corresponding alcohol ROH and carbon monoxide in the presence of a palladium-phosphine complex and a base. Pyrimidin-2-ylacetic acid esters are intermediates in the preparation of herbicides.

    摘要翻译: 制备通式如下的嘧啶-2-基乙酸酯的方法:其中R是C 1-6 - 烷基,C 3-6 - 环烷基,芳基或芳基烷基和R 1 -R 3,彼此独立地是氢 ,C 1-6 - 烷基,氟化C 1-6 - 烷基,C 1-6 - 烷氧基,(C 1-6 - 烷氧基)-C 1-6 - 烷基或(C 1-6 - 烷氧基)羰基。 这些酯在钯 - 膦配合物和碱的存在下由相应的2-(卤代甲基) - 嘧啶,相应的醇ROH和一氧化碳获得。 嘧啶-2-基乙酸酯是制备除草剂的中间体。

    Process for preparing 2- pyrimidinecarboxylates
    8.
    发明授权
    Process for preparing 2- pyrimidinecarboxylates 失效
    2-嘧啶羧酸盐的制备方法

    公开(公告)号:US5869667A

    公开(公告)日:1999-02-09

    申请号:US891787

    申请日:1997-07-14

    CPC分类号: C07D239/52

    摘要: A process for preparing 2-pyrimidinecarboxylates of the general formula: ##STR1## wherein R is C.sub.1-6 -alkyl, C.sub.3-6 -cycloalkyl, aryl or arylalkyl, and R.sup.1 to R.sup.3 are, independently of one another, hydrogen, C.sub.1-6 -alkyl, fluorinated C.sub.1-6 -alkyl, C.sub.1-6 -alkoxy, (C.sub.1-6 -alkoxy)-C.sub.1-6 -alkyl or (C.sub.1-6 -alkoxy)carbonyl. These are obtained from the corresponding 2-halopyrimidine, the corresponding alcohol ROH and carbon monoxide in the presence of a palladium/phosphine complex and a base. 2-pyrimidinecarboxylates are intermediates for preparing herbicides.

    摘要翻译: 制备通式如下的2-嘧啶羧酸盐的方法:其中R为C 1-6 - 烷基,C 3-6 - 环烷基,芳基或芳基烷基,且R 1至R 3彼此独立地为氢,C1- 氟代C 1-6 - 烷基,C 1-6 - 烷氧基,(C 1-6 - 烷氧基)-C 1-6 - 烷基或(C 1-6 - 烷氧基)羰基。 它们由钯/膦配合物和碱存在下由相应的2-卤代嘧啶,相应的醇ROH和一氧化碳获得。 2-嘧啶羧酸盐是制备除草剂的中间体。

    4,6-dichloropyrimidine and related compounds
    9.
    发明授权
    4,6-dichloropyrimidine and related compounds 失效
    4,6-二氯嘧啶和相关化合物

    公开(公告)号:US5583226A

    公开(公告)日:1996-12-10

    申请号:US428916

    申请日:1995-04-25

    CPC分类号: C07D239/48

    摘要: A novel pyrimidine derivative, N-(2-amino-4,6-dichloropyrimidine-5-yl)formamide for use, e.g., in the production of antiviral nucleotide derivatives, can be made by a process involving cyclyzing an aminomalonic ester with guanidine or its salt in the presence of a base to produce 2,5-diamino-4,6-dihydroxypyrimidine or its salt, chlorinating this product with a chlorinating agent in the presence of an amide to produce 4,6-dichloropyrimidine, and reacting the 4,6-dichlororpyrimidine with an aqueous solution of a carboxylic acid to produce the N-(2-amino-4,6-dichloropyrimidine-5-yl)formammide. Novel also are 4,6-dichloropyrimidine, 4,6-dichloro-N'-(dimethylaminomethylene)pyrimidine-2,5-diamine, 4,6-dichloro-N'-(piperidine-1-ylmethylene)pyrimidine-2,5-diamine, and a process for making 2,5-diamino-4,6-dichloropyrimidine.

    摘要翻译: 用于制备抗病毒核苷酸衍生物的新颖的嘧啶衍生物N-(2-氨基-4,6-二氯嘧啶-5-基)甲酰胺可以通过一种方法制备,该方法包括用胍或氨基马来酸酯 其盐在碱的存在下反应以产生2,5-二氨基-4,6-二羟基嘧啶或其盐,在酰胺存在下用氯化剂氯化该产物以产生4,6-二氯嘧啶,并使4 ,6-二氯 - 嘧啶与羧酸的水溶液反应,得到N-(2-氨基-4,6-二氯嘧啶-5-基)甲酰胺。 新颖的还有4,6-二氯嘧啶,4,6-二氯-N' - (二甲基氨基亚甲基)嘧啶-2,5-二胺,4,6-二氯-N' - (哌啶-1-基亚甲基)嘧啶-2,5 - 二胺,以及制备2,5-二氨基-4,6-二氯嘧啶的方法。

    Process for preparing substituted pyrimidine derivatives
    10.
    发明授权
    Process for preparing substituted pyrimidine derivatives 失效
    制备取代嘧啶衍生物的方法

    公开(公告)号:US6114527A

    公开(公告)日:2000-09-05

    申请号:US341540

    申请日:1999-12-17

    CPC分类号: C07D239/36 C07D239/40

    摘要: A process for preparing substituted pyrimidine derivatives of the general formula (I): in which a [3-(dimethylamino)-2-azaprop-2-en-1-ylidine]dimethylammonium halide is reacted with a substituted acetamide. The compounds of general formula (I) are important intermediate products for pharmaceutical or agrochemical active substances.

    摘要翻译: PCT No.PCT / EP98 / 00074 Sec。 371 1999年12月17日第 102(e)1999年12月17日PCT PCT 1998年1月8日PCT公布。 第WO98 / 30549号公报 日期1998年7月16日制备通式(I)的取代嘧啶衍生物的方法:其中[3-(二甲基氨基)-2-氮杂丙-2-烯-1-基]二甲基卤化铵与取代的乙酰胺 。 通式(I)的化合物是药物或农药活性物质的重要中间产物。