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公开(公告)号:US4126615A
公开(公告)日:1978-11-21
申请号:US748221
申请日:1976-12-07
申请人: Istvan Turcsan , Istvan Jelinek , Jozsef Ugrics , Istvan Csik , Eva Somfai , Iren Csaszar nee Toth
发明人: Istvan Turcsan , Istvan Jelinek , Jozsef Ugrics , Istvan Csik , Eva Somfai , Iren Csaszar nee Toth
IPC分类号: C07C51/08 , C07D217/20
CPC分类号: C07D217/20 , C07C51/08
摘要: In the production of perparine or papaverine and their hydrochlorides, the formation of impurities in the reaction mixture is suppressed by fractionating a 3,4-di-R-benzyl-cyanide in the presence of an organic base (e.g. pyridine, dimethylformamide, ethylenediamine or triethylamine) followed by hydrogenation with a Raney-nickel catalyst treated with aqueous ammonium carbonate solution. R is methoxy or ethoxy.
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公开(公告)号:US20060161008A1
公开(公告)日:2006-07-20
申请号:US10478238
申请日:2002-05-16
申请人: Matyas Aradi , Ferenc Bakos , Zsolt Dombrady , Antal Gajary , Istvan Gyongyosi , Ferenc Kovacs , Andrea Major , Erika Matene Torok , Zsolt Parkanyi , Laszlo Schultz , Attila Supic , Sandor Szabom , Erzsebet Szalay , Jozsef Ugrics , Jozsef Zsiga
发明人: Matyas Aradi , Ferenc Bakos , Zsolt Dombrady , Antal Gajary , Istvan Gyongyosi , Ferenc Kovacs , Andrea Major , Erika Matene Torok , Zsolt Parkanyi , Laszlo Schultz , Attila Supic , Sandor Szabom , Erzsebet Szalay , Jozsef Ugrics , Jozsef Zsiga
IPC分类号: C07D333/28
CPC分类号: C07D333/12
摘要: The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.
摘要翻译: 根据本发明的方法涉及式(I)的2-氯甲基 - 噻吩的制备。 在该过程中,噻吩在一种或多种含有酮基的化合物的存在下被氯甲基化,并且任选地将其转化为式(II)的化合物。 式(I)和(II)的化合物是几种药物活性成分的中间体。
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