A novel process for the preparation of Etravirine comprises the condensing of ethyl cyanoacetate with N-cyanophenylguanidine to obtain an —OH compound of formula (II), which is further converted to a leaving group of formula (III). The compound of formula (III) is optionally protected and brominated to yield compound of formula (IV). The condensation of formula (IV) with 3,5-dimethyl-4-hydroxybenzonitrile yields a compound of formula (VI), and an optional deprotection of the compound of formula (VI) results in Etravirine.
一种制备艾曲韦林的新工艺,包括将乙基
氰乙酸酯与N-
氰基
苯基胍缩合,得到式(II)的—OH化合物,进一步转化为式(III)的离去基团。式(III)化合物可选择性地被保护和
溴化,得到式(IV)的化合物。式(IV)与
3,5-二甲基-4-羟基苯腈缩合,得到式(VI)的化合物,对式(VI)的化合物进行可选择性地去保护,得到艾曲韦林。