Process for manufacturing 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid
申请人:Almirall, S.A.
公开号:EP2314577A1
公开(公告)日:2011-04-27
This invention is directed to a process for manufacturing 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, which comprises the steps of:
a) providing 3,5-difluoro-3'-methoxybiphenyl-4-amine,
b) preparing and isolating an aminium salt of the 3,5-difluoro-3'-methoxybiphenyl-4-amine, and
c) further reacting the aminium salt of 3,5-difluoro-3'-methoxybiphenyl-4-amine obtained in b) to obtain 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid.
本发明涉及一种制备2-[(3,5-二氟-3'-甲氧基-1,1'-联苯基-4-基)氨基]烟酸的方法,包括以下步骤:
a) 提供含有3,5-二氟-3'-甲氧基联苯基-4-胺,
b) 制备并分离出3,5-二氟-3'-甲氧基联苯基-4-胺的铵盐,并且
c) 将在b)中获得的3,5-二氟-3'-甲氧基联苯基-4-胺的铵盐进一步反应以得到2-[(3,5-二氟-3'-甲氧基-1,1'-联苯基-4-基)氨基]烟酸。