The invention relates to a process for the preparation of a compound of formula (I), which process comprises a) reacting a compound of formula (II), wherein X is chloro or bromo, with an organometallic species to (III) reacting the halobenzyne of formula (III) so formed with (IV) wherein R
1
and R
2
are hydrogen or C
1
-C
6
alkyl; to (V), b) hydrogenating V in the presence of a metal catalyst to (VI), c) ozonising (VI) to (VII) d) converting (VII) in the presence of a phosphane and CCI
4
or CHCI
3
to (VIII) (VIII), and either e1) reacting VIII with NH
3
in the presence of a catalyst to (IX) and f) reacting IX in the presence of a base with the compound of formula (X), to the compound of formula (I); or e2) reacting the compound of formula (VIII), in the presence of a solvent, a base, a copper catalyst and at least one ligand with (Xa), to the compound of formula (I).
本发明涉及一种制备式(I)化合物的方法,该方法包括a)将式(II)化合物与有机
金属物种反应,其中X为
氯或
溴,以得到式(III)的卤代苯基炔,然后将所得的卤代苯基炔与式(IV)反应,其中R1和R2为氢或C1-C6烷基,以得到式(V)的化合物;b)在
金属催化剂的存在下对V进行氢化,得到(VI);c)对(VI)进行
臭氧化,得到(VII);d)在膦和CCI4或CHCI3的存在下将(VII)转化为(VIII),并得到(VIII);然后进行以下步骤之一:e1)在催化剂的存在下,将VIII与NH3反应,得到(IX);f)在碱的存在下,将IX与式(X)的化合物反应,得到式(I)的化合物;或者e2)在溶剂、碱、
铜催化剂和至少一种
配体的存在下,将式(VIII)与(Xa)反应,得到式(I)的化合物。