[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。