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1. 发明授权

US07863486B2 Electrochemical preparation of sterically hindered amines 有权
标题翻译：空间位阻胺的电化学制备
公开(公告)号：US07863486B2
公开(公告)日：2011-01-04
申请号：US12306616
申请日：2007-06-27
申请人： Ulrich Griesbach , Siegfried R. Waldvogel , Itamar Michael Malkowsky , Joern Kulisch
发明人： Ulrich Griesbach , Siegfried R. Waldvogel , Itamar Michael Malkowsky , Joern Kulisch
IPC分类号： C07C209/30 , C25B3/04
CPC分类号： C25B3/04 , C07C209/30 , C07C2601/14 , C07C211/35 , C07C211/40
摘要： The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where R is C1-6-alkyl or C2-6-alkenyl which is optionally substituted by one or more substituents selected independently from the group consisting of phenyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; R1 is H; C1-6-alkyl or C(O)—C1-6-alkyl and A is a 5-, 6- or 7-membered hydrocarbon ring which is saturated or has a double bond and in which at least one CH2 group may, if appropriate, be replaced by —O—, —S— —NH—, —N═ or —N(C1-6-alkyl)- and which may optionally be substituted by one or more further substituents selected independently from the group consisting of phenyl, C1-6-alkyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; wherein, based on the ring carbon bearing the substituent R, the oxime derivative has an excess of the R or S form of at least 10%.
摘要翻译：本发明涉及一种制备胺的方法，其包括通式（I）的相应肟衍生物的步骤阴极还原，其中R是C 1-6 - 烷基或任选被一个取代基取代的C 2-6 - 烯基或更多取代基独立地选自苯基，O-C 1-6 - 烷基，NH-C 1-6 - 烷基，N（C 1-6 - 烷基）2，OH和NH 2; R1是H; C 1-6 - 烷基或C（O）-C 1-6 - 烷基，A是饱和或具有双键并且其中至少一个CH 2基团的5-，6-或7-元烃环，如果适当地被-O - ， - S - NH - ， - N =或-N（C 1-6 - 烷基）取代，并且其可以任选地被一个或多个另外的取代基取代，所述取代基独立地选自苯基，C 1-6 - 烷基，O-C 1-6 - 烷基，NH-C 1-6 - 烷基，N（C 1-6 - 烷基）2，OH和NH 2; 其中，基于带有取代基R的环碳，肟衍生物具有至少10％的R或S形式的过量。

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