Heat-based process for the re-racemisation of a
(-)-2-phenylmethyl-3,3-dimethyl-piperidin-4-on derivative
    2.
    发明授权
    Heat-based process for the re-racemisation of a (-)-2-phenylmethyl-3,3-dimethyl-piperidin-4-on derivative 有权
    用于( - ) - 2-苯基甲基-3,3-二甲基 - 哌啶-4-基衍生物的重新外消旋化的基于热的方法

    公开(公告)号:US6140502A

    公开(公告)日:2000-10-31

    申请号:US442567

    申请日:1999-11-18

    CPC分类号: C07D211/74 C07D221/26

    摘要: A process for the re-racemisation of a (-)-2-phenylmethyl-3,3-dimethyl-piperidin-4-on derivative wherein a (-)-2-phenylmethyl-3,3-dimethyl-piperidin-4-on derivative of the formula 8.sub.BwhereinR.sub.2 denotes hydrogen C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.8 -alkoxy, a benzoyl group bound via an oxygen or an alkylcarboxyl group having a straight chained or branched C.sub.1 -C.sub.6 -lower alkyl group--wherein the alkyl group may optionally be substituted by one or more halogen atoms which may be identical or different;is heated to yield a racemic mixture of compounds of the formulae 8.sub.A and 8.sub.B, in accordance with the following reaction scheme: ##STR1##

    摘要翻译: ( - ) - 2-苯基甲基-3,3-二甲基 - 哌啶-4-酮衍生物的重新外消旋化的方法,其中将( - ) - 2-苯基甲基-3,3-二甲基 - 哌啶-4-酮衍生物 式8B的衍生物,其中R2表示氢C1-C6-烷基,卤素,C1-C8-烷氧基,经由具有直链或支链C1-C6-低级烷基的氧或烷基羧基键合的苯甲酰基,其中, 烷基可以任选地被一个或多个可以相同或不同的卤素原子取代; 加热得到式8A和8B化合物的外消旋混合物,按照以下反应方案:

    Method of preparing norbenzomorphane as an intermediate
    3.
    发明授权
    Method of preparing norbenzomorphane as an intermediate 有权
    制备作为中间体的苯并吗啡烷的方法

    公开(公告)号:US6054604A

    公开(公告)日:2000-04-25

    申请号:US256909

    申请日:1999-02-24

    CPC分类号: C07D211/74 C07D221/26

    摘要: The present invention relates to new processes for preparing norbenzomorphan, the central intermediate step in the preparation of pharmaceutically useful benzomorphan derivatives of general formula 1 ##STR1## especially (-)-(1R,5S,2"R)-3'-hydroxy-2-(2-methoxypropyl)-5,9,9-trimethyl-6,7-benzomorphan or [(-)-(2R,6S,2'R)-3-(2-methoxypropyl)-6,11,11-trimethyl-1,2,3,4,5,6-hexahydro-2,6-methano-benzo[.alpha.]oxacin-9-ol] (BIII 277).

    摘要翻译: 本发明涉及制备去甲苯并吡喃的新方法,制备药学上可用的通式1的苯并吗啉衍生物的中间体步骤,特别是( - ) - (1R,5S,2''R)-3'-羟基-2- (2-甲氧基丙基)-5,9,9-三甲基-6,7-苯并吗啉或[( - ) - (2R,6S,2'R)-3-(2-甲氧基丙基)-6,11,11-三 -1,2,3,4,5,6-六氢-2,6-亚甲基 - 苯并恶唑啉-9-醇](BIII 277)。

    Method of preparing norbenzomorphanes
    5.
    发明授权
    Method of preparing norbenzomorphanes 失效
    制备异苯并吗啉的方法

    公开(公告)号:US5945535A

    公开(公告)日:1999-08-31

    申请号:US982000

    申请日:1998-05-01

    CPC分类号: C07D211/74 C07D221/26

    摘要: The present invention relates to a new process for preparing norbenzomorphan, the central intermediate step in the preparation of pharmaceutically useful benzomorphan derivatives of general formula 1 ##STR1## especially (-)-(1R,5S,2"R)-3'-hydroxy-2-(2-methoxypropyl)-5,9,9-trimethyl-6,7-benzomorphan or �(-)-(2R,6S,2'R)-3-(2-methoxypropyl)-6,11,11-trimethyl-1,2,3,4,5,6 -hexahydro-2,6-methano-benzo�.alpha.!oxacin-9-ol! (BIII 277).

    摘要翻译: PCT No.PCT / EP96 / 03401 Sec。 371日期:1998年5月1日 102(e)日期1998年5月1日PCT提交1996年8月2日PCT公布。 出版物WO97 / 06146 日本二月二十日,日本本发明涉及一种新的制备去甲苯并吡喃的方法,该方法是制备药学上有用的通式1的苯并吗啉衍生物,特别是( - ) - (1R,5S,2''R)-3 (2-甲氧基丙基)-5,9,9-三甲基-6,7-苯并 - 吗啉或[( - ) - (2R,6S,2'R)-3-(2-甲氧基丙基)-6 ,11,11-三甲基-1,2,3,4,5,6-六氢-2,6-亚甲基 - 苯并[α]恶唑烷-9-醇](BIII 277)。

    Method for the Production of 1,3-Dioxolane-2-Ones and Carboxylic Acid Esters by Means of Transacylation in Basic Reaction Conditions
    6.
    发明申请
    Method for the Production of 1,3-Dioxolane-2-Ones and Carboxylic Acid Esters by Means of Transacylation in Basic Reaction Conditions 有权
    在碱性反应条件下通过转酰胺生产1,3-二氧戊环-2-酮和羧酸酯的方法

    公开(公告)号:US20100305146A1

    公开(公告)日:2010-12-02

    申请号:US12677920

    申请日:2008-09-03

    摘要: The invention relates to a method for producing 1,3-dioxolane-2-ones of general formula (3) in basic reaction conditions by reesterifying the respective ester of general formula (1) in which R1 to R5 have the meanings indicated in the claims and the description. The invention further relates to a method for producing 2-hydroxy carboxylic acid esters of general formula (5) with or without isolation of the intermediate in the form of a derivative of the 1,3-dioxolane-2-one of general formula (3) in basic reaction conditions by reesterifying the respective ester of general formula (1) in which R1, R2, and R6 have the meanings indicated in the claims and the description. The method according to the invention allows the reaction to take place in very gentle basic conditions, causing fewer secondary reactions and providing a greater yield than reactions in highly polar aprotic solvents. Acid-sensitive and/or temperature-sensitive compounds can be synthesized.

    摘要翻译: 本发明涉及在碱性反应条件下制备通式(3)的1,3-二氧戊环-2-酮的方法,该方法是将通式(1)的各酯酯化,其中R 1至R 5具有权利要求书中所示的含义 和描述。 本发明还涉及一种通式(5)的2-羟基羧酸酯的制备方法,该方法具有或不分离通式(3)的1,3-二氧戊环-2-酮衍生物形式的中间体 )在碱性反应条件下,通过使通式(1)的相应酯重新酯化,其中R 1,R 2和R 6具有权利要求书和说明书中所示的含义。 根据本发明的方法允许反应在非常温和的碱性条件下进行,引起较少的次级反应并且提供比在高极性非质子溶剂中的反应更大的产率。 可以合成酸敏感和/或温度敏感的化合物。

    Method for the production of 1,3-dioxolane-2-ones and carboxylic acid esters by means of transacylation in basic reaction conditions
    7.
    发明授权
    Method for the production of 1,3-dioxolane-2-ones and carboxylic acid esters by means of transacylation in basic reaction conditions 有权
    在碱性反应条件下通过转酰胺生产1,3-二氧戊环-2-酮和羧酸酯的方法

    公开(公告)号:US08263788B2

    公开(公告)日:2012-09-11

    申请号:US12677920

    申请日:2008-09-03

    摘要: The invention relates to a method for producing 1,3-dioxolane-2-ones of general formula (3) in basic reaction conditions by reesterifying the respective ester of general formula (1) in which R1 to R5 have the meanings indicated in the claims and the description. The invention further relates to a method for producing 2-hydroxy carboxylic acid esters of general formula (5) with or without isolation of the intermediate in the form of a derivative of the 1,3-dioxolane-2-one of general formula (3) in basic reaction conditions by reesterifying the respective ester of general formula (1) in which R1, R2, and R6 have the meanings indicated in the claims and the description. The method according to the invention allows the reaction to take place in very gentle basic conditions, causing fewer secondary reactions and providing a greater yield than reactions in highly polar aprotic solvents. Acid-sensitive and/or temperature-sensitive compounds can be synthesized.

    摘要翻译: 本发明涉及在碱性反应条件下制备通式(3)的1,3-二氧戊环-2-酮的方法,该方法是将通式(1)的各酯酯化,其中R 1至R 5具有权利要求中所示的含义 和描述。 本发明还涉及一种通式(5)的2-羟基羧酸酯的制备方法,该方法具有或不分离通式(3)的1,3-二氧戊环-2-酮衍生物形式的中间体 )在碱性反应条件下,通过使通式(1)的相应酯重新酯化,其中R 1,R 2和R 6具有权利要求书和说明书中所示的含义。 根据本发明的方法允许反应在非常温和的碱性条件下进行,引起较少的次级反应并且提供比在高极性非质子溶剂中的反应更大的产率。 可以合成酸敏感和/或温度敏感的化合物。