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公开(公告)号:US08563752B2
公开(公告)日:2013-10-22
申请号:US13186570
申请日:2011-07-20
Applicant: Paul Hanselmann , Ellen Klegraf , Stephan Elzner , Wilhelm Quittmann , Daniel Friedrich Fischer
Inventor: Paul Hanselmann , Ellen Klegraf , Stephan Elzner , Wilhelm Quittmann , Daniel Friedrich Fischer
IPC: C07D305/12
CPC classification number: C07D305/12 , C07C227/32 , C07C229/22
Abstract: The invention relates to a method for the production of L-carnitine, wherein a chiral β-lactone carnitine precursor is obtained by a [2+2] cycloaddition of ketene with an aldehyde X—CH2—CHO, wherein X is selected from Cl, Br, I and trimethylamine, in the presence of a chiral catalyst.
Abstract translation: 本发明涉及L-肉毒碱的生产方法,其中手性β-内酯肉碱前体是通过乙烯酮与醛X-CH 2 -CHO 2 [2 + 2]环加成获得的,其中X选自Cl, Br,I和三甲胺,在手性催化剂存在下进行。
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2.
公开(公告)号:US20120022275A1
公开(公告)日:2012-01-26
申请号:US13186570
申请日:2011-07-20
Applicant: Paul Hanselmann , Ellen Klegraf , Stephan Elzner , Wilhelm Quittmann , Daniel Friedrich Fischer
Inventor: Paul Hanselmann , Ellen Klegraf , Stephan Elzner , Wilhelm Quittmann , Daniel Friedrich Fischer
IPC: C07C229/06 , C07D305/12
CPC classification number: C07D305/12 , C07C227/32 , C07C229/22
Abstract: The invention relates to a method for the production of L-carnitine, wherein a chiral β-lactone carnitine precursor is obtained by a [2+2] cycloaddition of ketene with an aldehyde X—CH2—CHO, wherein X is selected from Cl, Br, I and trimethylamine, in the presence of a chiral catalyst.
Abstract translation: 本发明涉及生产L-肉碱的方法,其中通过乙烯酮与醛X-CH 2 -CHO 2 [2 + 2]环加成获得手性和肉桂内酯肉碱前体,其中X选自Cl ,Br,I和三甲胺,在手性催化剂存在下进行。
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