Process for the preparation of a compound of formula (I) wherein R1, R2, R3, R4, R5 and R6 have the meanings as defined in the specification, comprising the step of reacting an acrylic acid chloride compound of formula (II′): wherein R1, R2, R3, R4, R5 and R6 have the meanings as defined in the specification, with aqueous hydroxylamine and optionally converting the resulting compound into an acid addition salt thereof.
制备式(I)化合物的过程,其中R1,R2,R3,R4,R5和R6具有规范中定义的含义,包括将式(II')的
丙烯酸氯化物化合物与
水合
肼反应,并可选择将所得化合物转化为其酸加成盐。其中R1,R2,R3,R4,R5和R6具有规范中定义的含义。