4-[[6-chloro-2-[(4-cyanophenyl)amino]-4-pyrimidinyl]oxy]-3,5-dimethyl- benzonitrile is a key intermediate for the preparation of etravirine. The present invention provides a process for preparation of 4-[[6-chloro-2-[(4-cyanophenyl)amino]-4- pyrimidinyl]oxy]-3,5-dimethylbenzonitrile. The present invention also provides a novel process for the preparation of etravirine crystalline form I. The present invention further provides novel crystalline forms of etravirine, processes for their preparation and pharmaceutical compositions comprising them.
                            4-[[6-
氯-2-[(4-
氰基苯基)
氨基]-4-
嘧啶基]氧基]-3,5-二甲基
苯甲腈是埃替韦林的制备的关键中间体。本发明提供了一种制备4-[[6-
氯-2-[(4-
氰基苯基)
氨基]-4-
嘧啶基]氧基]-3,5-二甲基
苯甲腈的方法。本发明还提供了一种制备埃替韦林晶型I的新方法。本发明还提供了埃替韦林的新晶型,以及它们的制备方法和包含它们的药物组合物。