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    • 5. 发明公开
    • 광학 활성 피페리딘 화합물의 개량된 제조방법
    • 一种改进的光学活性哌啶化合物的制备方法
    • KR1020110028207A
    • 2011-03-17
    • KR1020100049479
    • 2010-05-27
    • 박사룡
    • 박사룡
    • C07D401/10C07D401/02C07D401/12
    • Y02P20/55C07D401/12A61K31/4545C07D213/26C07D213/30
    • PURPOSE: A method for preparing (S)-4-[4-[4-chlorophenyl)(2-pyridyl)methoxy]piperidino]butanoic acid and additive salts thereof are provided. CONSTITUTION: A method for preparing (S)-4-[4-[4-chlorophenyl)(2-pyridyl)methoxy]piperidino]butanoic acid and additive salts thereof comprises: a step of reacting (-)-4-chlorophenyl-2-pyridyl-methanol of structural formula b with an alkali metal to obtain a (-)-4-chlorophenyl-2-pyridyl-methoxide of an alkali metal of structural formula b'; a step of reacting the compound of chemical formula b' with 4-halogeno-piperidyl)-butanoic acid derivative of structural formula c to obtain a (S)-4-[4-[4-chlorophenyl)(2-pyridyl)methoxy]piperidino]butanoic acid derivative of structural formula I'; and a step of removing a carboxylic protection group and reacting with organic acid.
    • 目的:提供(S)-4- [4- [4-氯苯基](2-吡啶基)甲氧基]哌啶子基]丁酸及其添加盐的制备方法。 构成:(S)-4- [4- [4-氯苯基](2-吡啶基)甲氧基]哌啶子基]丁酸及其添加盐的制备方法包括:( - ) - 4-氯苯基-2 结构式b的吡啶基 - 甲醇与碱金属反应,得到结构式b'的碱金属的( - ) - 4-氯苯基-2-吡啶基 - 甲醇盐; 使化学式b'的化合物与结构式c的4-卤代 - 哌啶基) - 丁酸衍生物反应,得到(S)-4- [4- [4-氯苯基](2-吡啶基)甲氧基] 哌啶子基]丁酸衍生物; 以及除去羧基保护基并与有机酸反应的步骤。
    • 9. 发明公开
    • 3급 N-알릴 입체 장애 아민의 제조방법
    • 制备叔丁基异丁基苯胺的方法
    • KR1020090080964A
    • 2009-07-27
    • KR1020097009807
    • 2007-11-14
    • 시바 홀딩 인코포레이티드
    • 살라,마시밀리아노
    • C07D401/14C07D401/02
    • C07D401/04
    • The instant invention discloses a process for the preparation of compounds of the formula (I), wherein the general symbols are as defined in claim 1, which process comprises reacting a sterically hindered amine of the formula (II), wherein the general symbols are as defined in claim 1, with a compound of the formula (III) wherein the general symbols are as defined in claim 1, in the presence of a catalyst. The compounds of the formula (I) are useful as stabilizers for protecting organic materials, in particular synthetic polymers, reprographic materials or coating materials against oxidative, thermal or light-induced degradation.
    • 本发明公开了制备式(I)化合物的方法,其中一般符号如权利要求1所定义,该方法包括使式(II)的空间位阻胺反应,其中通式为 权利要求1所述的化合物与通式(III)的化合物,其中通式为如权利要求1所定义,在催化剂存在下。 式(I)的化合物可用作保护有机材料,特别是合成聚合物,复制材料或涂料以防止氧化,热或光诱导的降解的稳定剂。