[EN] PROCESS FOR THE PREPARATION OF 4-AMINO-3-QUINOLINECARBONITRILES<br/>[FR] PROCEDE DE PREPARATION DE 4-AMINO-3-QUINOLEINECARBONITRILES
申请人:WYETH CORP
公开号:WO2005019201A2
公开(公告)日:2005-03-03
This invention discloses a process for the preparation of a 4-amino-3quinolinecarbonitrile comprising combining an amine compound with a cyanoacetic acid and an acid catalyst to yield a cyanoacetamide; condensing the cyanoacetamide with an optionally up-to tetra-substituted aniline in an alcoholic solvent and a trialkylorthoformate to yield an 2-amino-2-cyanoacrylamide; combining the 3-amino2-cyanoacrylamide with phosphorus oxychloride in acetonitrile, butyronitrile, toluene or xylene, optionally in the presence of a catalyst to yield a 4-amino-3quinolinecarbonitrile and also discloses a process for the preparation of a 7-amino-thieno[3,2-b]pyridine6-carbonitrile comprising combining a 3-amino thiophene with a cyanoacetamide and trial kylorthoformate in an alcoholic solvent to obtain a 3-amino2-cyanoacrylamide; and combining the 3-amino-2-cyanoacrylamide with phosphorus oxychloride and acetonitrile, butyronitrile, toluene or xylene, optionally in the presence of a catalyst to yield a 7-amino-thieno[3,2-b]pyridine-6-carbonitrile and also discloses a process for the preparation of a 4 amino-3-quinolinecarbonitrile comprising: combining an amine compound with cyanoacetic acid and a peptide coupling reagent to obtain a suspension; filtering the suspension; to yield cyanoacetamide; condensing the cyanoacetamide with an optionally up to tetra-substituted aniline with an alcoholic solvent to yield a 4-amino-3-quinolinecarbonitrile, and the invention discloses a process for obtaining a cyanoacetamide.
本发明公开了一种制备4-氨基-3-喹啉羧腈的方法,包括将胺化合物与氰乙酸和酸催化剂结合以得到氰乙酰胺;将氰乙酰胺与可选的高达四取代苯胺在醇溶剂和三烷基正酸酐中缩合,以得到2-氨基-2-氰基丙烯酰胺;将3-氨基-2-氰基丙烯酰胺与氧化磷酰氯在乙腈、丁腈、甲苯或二甲苯中结合,可选地在催化剂的存在下,以得到4-氨基-3-喹啉羧腈。本发明还公开了一种制备7-氨基噻吩[3,2-b]吡啶-6-羧腈的方法,包括将3-氨基噻吩与氰乙酰胺和三烷基正酸酐在醇溶剂中结合以得到3-氨基-2-氰基丙烯酰胺;将3-氨基-2-氰基丙烯酰胺与氧化磷酰氯和乙腈、丁腈、甲苯或二甲苯结合,可选地在催化剂的存在下,以得到7-氨基噻吩[3,2-b]吡啶-6-羧腈。本发明还公开了一种制备4-氨基-3-喹啉羧腈的方法,包括将胺化合物与氰乙酸和肽偶联试剂结合以得到悬浮液;过滤悬浮液以得到氰乙酰胺;将氰乙酰胺与可选的高达四取代苯胺在醇溶剂中缩合,以得到4-氨基-3-喹啉羧腈。本发明还公开了一种获得氰乙酰胺的方法。