申请人:Novartis AG
公开号:US07723550B2
公开(公告)日:2010-05-25
Process for preparing a compound of the formula (I) in which R1 and R2 are each independently H, C1-C8-alkyl, halogen, polyhalo-C1-C8-alkoxy, polyhalo-C1-C8-alkyl, C1-C8-alkoxy, C1-C8-alkoxy-C1-C8-alkyl, or C1-C8-alkoxy-C1-C8-alkoxy, where R1 and R2 are not both H, and R3 is C1-C8-alkyl, which is characterized in that a) a compound of the formula (II) in which R1 and R2 are each as defined above and X is Br, I, triflate, toyslate or mesylate is reacted with prop-2-yn-1-ol to give the compound of the formula (III), b) the compound of the formula (III) is reacted with an alkyl-metal compound in which “alkyl” is as defined above for R3 to give a compound of the formula (I).
制备式(I)化合物的过程,其中R1和R2各自独立地为H,C1-C8-烷基,卤素,多卤代C1-C8-烷氧基,多卤代C1-C8-烷基,C1-C8-烷氧基,C1-C8-烷氧基-C1-C8-烷基,或C1-C8-烷氧基-C1-C8-烷氧基,其中R1和R2不同时为H,且R3为C1-C8-烷基。该过程的特点在于:a)反应式(II)中R1和R2的定义如上所述,X为Br、I、三氟甲磺酸盐、对甲苯磺酸盐或甲磺酸盐的化合物与2-丙烯-1-醇反应,得到式(III)的化合物;b)式(III)的化合物与R3的定义如上所述的烷基金属化合物反应,得到式(I)的化合物。