Process for preparing 4.6-bis(difluoromethoxy)pyrimidine derivatives
    1.
    发明授权
    Process for preparing 4.6-bis(difluoromethoxy)pyrimidine derivatives 失效
    制备4.6双(二氟甲氧基)嘧啶衍生物的方法

    公开(公告)号:US5856483A

    公开(公告)日:1999-01-05

    申请号:US893228

    申请日:1997-07-15

    CPC分类号: C07D239/60

    摘要: A process for preparing 4,6-bis(difluoromethoxy)pyrimidine derivatives of the general formula: ##STR1## wherein R is a C.sub.1-4 -alkyl or optionally substituted phenyl or benzyl, proceeding from the corresponding 4,6-dihydroxypyrimidine dialkali-metal salt. In the process, the educt is reacted under pressure with chlorodifluoromethane in a solvent selected from the group consisting of the ketones, in the presence of a base and a phase-transfer catalyst and in the presence of 40 to 100 mol per mol of water of the 4,6-dihydroxypyrimidine dialkali-metal salt to form the final product.

    摘要翻译: 制备通式如下的4,6-双(二氟甲氧基)嘧啶衍生物的方法:其中R是C 1-4 - 烷基或任意取代的苯基或苄基,从相应的4,6-二羟基嘧啶二碱基 - 金属盐。 在该方法中,在压力下,溶出物与氯二氟甲烷在选自酮的溶剂中,在碱和相转移催化剂存在下,在40-100mol / mol水 4,6-二羟基嘧啶二碱金属盐形成最终产物。

    Process for the production of 7-acylindoles
    2.
    发明授权
    Process for the production of 7-acylindoles 失效
    生产7-acolesoles的方法

    公开(公告)号:US5446162A

    公开(公告)日:1995-08-29

    申请号:US280738

    申请日:1994-07-26

    摘要: A process for the production of 7-acylindoles of the general formula: ##STR1## starting from indoline of the formula: ##STR2## Indoline is cyanized in a first stage to 7-cyanoindoline of the formula: ##STR3## The latter is catalytically dehydrogenated in a second stage to 7-cyanindole of the formula: ##STR4## The latter is then acylated in a third stage with an organometallic compound of the formula:R--Q Vinto the end product according to formula I.

    摘要翻译: 制备以下通式的7-丙氧基咪唑的方法:由下式的二氢吲哚开始:将二氢吲哚在第一阶段中氰化为具有下式的7-氰基二氢吲哚:后者 在第二阶段中催化脱氢为具有下式的7-氰基吲哚:然后将后者在第三阶段用具有下式的有机金属化合物R-QV酰化成根据式I的最终产物。

    Di and trisubstituted pyridines
    3.
    发明授权
    Di and trisubstituted pyridines 失效
    二取代和三取代吡啶

    公开(公告)号:US5760236A

    公开(公告)日:1998-06-02

    申请号:US561230

    申请日:1995-11-21

    摘要: Substituted pyridines of the general formula: ##STR1## wherein R.sup.1 is hydroxyl or chlorine, and a) X is hydrogen or chlorine, R.sup.2 and R.sup.3 together are .dbd.O, R.sup.4 is a group of the formula --OR.sup.5 and R.sup.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl or benzyl, or b) X is hydrogen and R.sup.2, R.sup.3 and R.sup.4 together are .dbd.N--NH--, or c) X and R.sup.2 each is hydrogen and R.sup.3 and R.sup.4 together are --O--, or d) X and R.sup.2 each is hydrogen, R.sup.3 is hydroxyl and R.sup.4 is amino or hydroxyl. The compounds are obtained by subjecting nicotine to microbiological oxidation to give 5-succinoyl-2-pyridone, followed by chemical reactions. The compounds are suitable as intermediates for the preparation of pharmaceutically active compounds.

    摘要翻译: 取代的具有以下通式的吡啶:其中R1是羟基或氯,以及a)X是氢或氯,R2和R3一起是= O,R4是式-OR5的基团,R5是氢,C1 C 1-4烷基或苄基,或b)X是氢,R 2,R 3和R 4一起是N-NH-,或c)X和R 2各自是氢,R 3和R 4一起是-O-,或d)X R2各自为氢,R3为羟基,R4为氨基或羟基。 该化合物通过使尼古丁进行微生物氧化得到5-琥珀酰基-2-吡啶酮,然后进行化学反应。 该化合物适合作为制备药物活性化合物的中间体。

    Process for preparing imidazopyridine derivatives
    4.
    发明授权
    Process for preparing imidazopyridine derivatives 失效
    制备咪唑并吡啶衍生物的方法

    公开(公告)号:US5498715A

    公开(公告)日:1996-03-12

    申请号:US350083

    申请日:1994-11-29

    CPC分类号: C07D471/04

    摘要: A process for preparing imidazopyridine derivatives of the general formula: ##STR1## wherein R.sub.1 is hydrogen or an alkyl group, and R.sub.2, R.sub.3 and R.sub.4 are identical or different and are hydrogen, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group or a halogen atom. In this process, a 2-amino-3-nitropyridine is hydrogenated in the presence of a hydrogenation catalyst and the hydrogenation product is condensed with a carboxylic acid simultaneously present in the reaction mixture to give the end product. The imidazopyridine derivatives are intermediates for the preparation of angiotensin II antagonists.

    摘要翻译: 制备通式如下的咪唑并吡啶衍生物的方法:其中R 1是氢或烷基,R 2,R 3和R 4相同或不同并且是氢,烷基,环烷基,芳基, 芳烷基或卤素原子。 在该方法中,2-氨基-3-硝基吡啶在氢化催化剂存在下氢化,氢化产物与同时存在于反应混合物中的羧酸缩合得到最终产物。 咪唑并吡啶衍生物是制备血管紧张素II拮抗剂的中间体。

    Process for the production of 7-acylindoles
    5.
    发明授权
    Process for the production of 7-acylindoles 失效
    生产7-acolesoles的方法

    公开(公告)号:US5380857A

    公开(公告)日:1995-01-10

    申请号:US84168

    申请日:1993-06-30

    摘要: A process for the production of 7-acylindoles of the general formula: ##STR1## starting from indoline of the formula: ##STR2## Indoline is cyanized in a first stage to 7-cyanoindoline of the formula: ##STR3## The latter is catalytically dehydrogenated in a second stage to 7-cyanindole of the formula: ##STR4## The latter is then acylated in a third stage with an organometallic compound of the formula:R--Q Vinto the end product according to formula I.

    摘要翻译: 制备以下通式的7-丙氧基咪唑的方法:由下式的二氢吲哚开始:将二氢吲哚在第一阶段中氰化为具有下式的7-氰基二氢吲哚:后者 在第二阶段催化脱氢为下式的7-氰基吲哚:然后将后者在第三阶段用下式的有机金属化合物RQ V酰化成根据式I的最终产物。

    PROCESS FOR PREPARING 2-ALKYL-3-AROYL-5-NITRO-BENZOFURANS
    8.
    发明申请
    PROCESS FOR PREPARING 2-ALKYL-3-AROYL-5-NITRO-BENZOFURANS 审中-公开
    制备2-烷基-3-硝基-5-硝基苯并呋喃的方法

    公开(公告)号:US20110178314A1

    公开(公告)日:2011-07-21

    申请号:US12377551

    申请日:2008-10-10

    摘要: The present invention relates to a process for the preparation of a compound of formula wherein R1 is selected from C1-6-alkyl, C3-6-cycloalkyl and aralkyl, and wherein R2 at each occurrence independently is halogen or C1-6-alkyl, and m is an integer from 0 to 4, Q is selected from halogen, —NO2 and —NR3R4, wherein R3 and R4 are independently selected from hydrogen, C1-6-alkyl, C3-6-cycloalkyl, aryl, aralkyl, mesyl and tosyl, or wherein R3 and R4 together form a C4-6-alkylene group, Y at each occurrence is hydrogen or a hydroxy protection group W that can be hydrolytically cleaved under acidic conditions, and n is an integer from 1 to 3, and n is an integer from 1 to 3, with the proviso that n and m together are not greater than 5.

    摘要翻译: 本发明涉及制备下式化合物的方法,其中R 1选自C 1-6 - 烷基,C 3-6 - 环烷基和芳烷基,并且其中R 2在每次出现时独立地为卤素或C 1-6 - 烷基, 且m为0至4的整数,Q选自卤素,-NO 2和-NR 3 R 4,其中R 3和R 4独立地选自氢,C 1-6 - 烷基,C 3-6 - 环烷基,芳基,芳烷基,甲磺酰基和 甲苯磺酰基,或其中R3和R4一起形成C 4-6亚烷基,Y在每次出现时为氢或可在酸性条件下水解裂解的羟基保护基W,n为1至3的整数,n为 是1〜3的整数,条件是n和m不大于5。

    Di-and trisubstituted pyridines and their preparation
    9.
    发明授权
    Di-and trisubstituted pyridines and their preparation 失效
    二取代和三取代吡啶及其制备方法

    公开(公告)号:US5994540A

    公开(公告)日:1999-11-30

    申请号:US69996

    申请日:1998-04-30

    摘要: Substituted pyridines of the general formula: ##STR1## wherein R.sup.1 is hydroxyl or chlorine, and a) X is hydrogen or chlorine, R.sup.2 and R.sup.3 together are .dbd.O, R.sup.4 is a group of the formula --OR.sup.5 and R.sup.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl or benzyl orb) X is hydrogen and R.sup.2, R.sup.3 and R.sup.4 together are .dbd.N--NH--, orc) X and R.sup.2 each is hydrogen and R.sup.3 and R.sup.4 together are --O--, ord) X and R.sup.2 each is hydrogen, R.sup.3 is hydroxyl and R.sup.4 is amino or hydroxy.The compounds are obtained by subjecting nicotine to microbiological oxidation to give 5-succinoyl-2-pyridone, followed by chemical reactions. The compounds are suitable as intermediates for the preparation of pharmaceutically active compounds.

    摘要翻译: 取代的具有下列通式的吡啶:其中R1是羟基或氯,以及a)X是氢或氯,R2和R3一起是= O,R4是式-OR5的基团,R5是氢,C1-C4-烷基 或苄基或b)X是氢,R 2,R 3和R 4一起是N-NH-,或c)X和R 2各自是氢,R 3和R 4一起是-O-,或d)X和R 2各自是氢 R3是羟基,R4是氨基或羟基。 该化合物通过使尼古丁进行微生物氧化得到5-琥珀酰基-2-吡啶酮,然后进行化学反应。 该化合物适合作为制备药物活性化合物的中间体。