申请人:Sutherland Wiggins Karen
公开号:US20050043537A1
公开(公告)日:2005-02-24
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.
这项发明揭示了一种制备4-氨基-3-喹啉碳腈的过程,包括将胺化合物与氰乙酸和酸催化剂结合以产生氰乙酰胺;将氰乙酰胺与醇溶剂和三烷基正甲酸酯中的一个或多个取代苯胺缩合以产生3-氨基-2-氰基丙烯酰胺;将3-氨基-2-氰基丙烯酰胺与氯化磷在乙腈、丁腈、甲苯或二甲苯中结合,可选地在催化剂存在的情况下以产生4-氨基-3-喹啉碳腈,并且还揭示了一种制备7-氨基噻吩[3,2-b]吡啶-6-碳腈的过程,包括将二取代的3-氨基噻吩与氰乙酰胺和三烷基正甲酸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-氰基丙烯酰胺与氯化磷和乙腈、丁腈、甲苯或二甲苯结合,可选地在催化剂存在的情况下以产生7-氨基噻吩[3,2-b]吡啶-6-碳腈,并且还揭示了一种通过将胺化合物与氰乙酸和肽偶联试剂结合以获得悬浮液;过滤悬浮液以产生氰乙酰胺;将氰乙酰胺与一个或多个取代苯胺、醇溶剂和三乙基正甲酸酯缩合以产生3-氨基-2-氰基丙烯酰胺;将3-氨基-2-氰基丙烯酰胺与氯化磷结合以产生4-氨基-3-喹啉碳腈的制备过程。