The invention relates to a process for the preparation of the compound of formula (I), which process comprises a) reacting a compound of formula (II), wherein X is chloro or bromo, with an organometallic species in an inert atmosphere to a halobenzyne of formula (X), reacting the halobenzyne of formula X so formed with cyclopentadiene to (III), b) reacting III in the presence of an inert solvent with an oxidant to (IV), c) reacing IV in the presence of a Lewis acid and a hydride source to (V), d) reacting V in the presence of an oxidizing agent, a base and an inert solvent to (VI), e) converting VI in the presence of a phosphane and CCL
4
or CHCl
3
to (VII), and either f1) reacting VII with NH
3
in the presence of a catalyst to the compound of formula (VIII); and g) reacting VIII in the presence of a base with a compound of formula (IX), to the compound of formula (I); or f2) reacting the compound of formula (VII), in the presence of a solvent, a base, a copper catalyst and at least one ligand with the compound of formula (IXa), 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)在惰性气氛中,将式(II)化合物与有机
金属物种反应,生成式(X)的卤代
苯乙烯,然后将所形成的卤代
苯乙烯式X与
环戊二烯反应生成式(III);b)在惰性溶剂的存在下,将III与氧化剂反应生成式(IV);c)在
路易斯酸和
氢化物来源的存在下,将IV反应生成式(V);d)在氧化剂、碱和惰性溶剂的存在下,将V反应生成式(VI);e)在膦和CCL4或
CHCl3的存在下将VI转化为式(VII);并且f1)在催化剂的存在下,将VII与NH3反应生成式(VIII),然后在碱的存在下,将VIII与式(IX)化合物反应生成式(I);或f2)在溶剂、碱、
铜催化剂和至少一种
配体的存在下,将式(VII)与式(IXa)化合物反应生成式(I)。