申请人:Sutherland Wiggins Karen
公开号:US20080033175A1
公开(公告)日:2008-02-07
This invention discloses a process for the preparation of a 4-amino-3-quinolinecarbonitrile 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 a 3-amino-2-cyanoacrylamide; combining the 3-amino-2-cyanoacrylamide with phosphorus oxychloride in acetonitrile, butyronitrile, toluene or xylene, optionally in the presence of a catalyst to yield a 4-amino-3-quinolinecarbonitrile and also discloses a process for the preparation of a 7-amino-thieno[3,2-b]pyridine-6-carbonitrile comprising combining a disubstituted 3-amino thiophene with a cyanoacetamide and trialkylorthoformate in an alcoholic solvent to obtain a 3-amino-2-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 by combining an amine compound with a cyanoacetic acid and a peptide coupling reagent to obtain a suspension; filtering the suspension to yield a cyanoacetamide; condensing the cyanoacetamide with an optionally up to tetra-substituted aniline, an alcoholic solvent, and triethylorthoformate to yield a 3-amino-2-cyanoacrylamide; and combining the 3-amino-2-cyanoacrylamide with phosphorus oxychloride to yield a 4-amino-3-quinolinecarbonitrile.
本发明公开了制备4-
氨基-3-
喹啉碳腈的方法,包括将
胺类化合物与
氰乙酸和酸催化剂结合以产生
氰乙酰胺;在醇溶剂和三烷基正酯的存在下,将
氰乙酰胺与可选的四取代
苯胺缩合以产生3-
氨基-2-
氰基
丙烯酰胺;将3-
氨基-2-
氰基
丙烯酰胺与
三氯化磷在
乙腈、
丁腈、
甲苯或二
甲苯中结合,可选地在催化剂的存在下,以产生4-
氨基-3-
喹啉碳腈。本发明还公开了一种制备7-
氨基
噻吩[3,2-b]
吡啶-6-碳腈的方法,包括将二取代
3-氨基噻吩与
氰乙酰胺和三烷基正酯在醇溶剂中结合以获得3-
氨基-2-
氰基
丙烯酰胺;将3-
氨基-2-
氰基
丙烯酰胺与
三氯化磷和
乙腈、
丁腈、
甲苯或二
甲苯中结合,可选地在催化剂的存在下,以产生7-
氨基
噻吩[3,2-b]
吡啶-6-碳腈。本发明还公开了一种通过将
胺类化合物与
氰乙酸和肽偶联试剂结合以获得悬浮液;过滤悬浮液以获得
氰乙酰胺;将
氰乙酰胺与可选的四取代
苯胺、醇溶剂和三乙基正酯缩合以获得3-
氨基-2-
氰基
丙烯酰胺;将3-
氨基-2-
氰基
丙烯酰胺与
三氯化磷结合以获得4-
氨基-3-
喹啉碳腈的方法。