Disclosed is a process for preparing anti-inflammatory compound nepafenac comprising preparing a compound of formula (V) wherein a N-halosuccinimide is used as the halogenating agent, followed by desulfurization using Raney Nickel. Also disclosed is a polymorphic form B of 2-amino-3-benzoyl-α-(methylthio)-benzeneacetamide (i.e., a compound of formula (V) wherein R is methyl
本发明公开了一种制备抗炎化合物奈帕
酚的方法,包括制备式(V)的化合物,其中使用N-卤代琥珀
酰亚胺作为卤代试剂,随后使用Raney
镍进行脱
硫化反应。还公开了2-
氨基-3-苯甲酰基-α-(甲
硫基)-苯乙酰胺的B型多晶形式(即,式(V)的化合物,其中R为甲基)。