A process for preparing the compound of the formula ##STR1## which comprises treating a compound of the formula ##STR2## wherein R.sup.2 is hydrogen, CN or CO.sub.2 R.sup.1 and R.sup.1 is hydrogen or (C.sub.1 -C.sub.6)alkyl with a reducing agent with the proviso that when R.sup.2 is CN or CO.sub.2 R.sup.1 and R.sup.1 is (C.sub.1 -C.sub.6)alkyl the product of the reduction is heated with an acid. Compounds of formula II wherein R.sup.2 is CN or CO.sub.2 R.sup.1 and R.sup.1 is (C.sub.1 -C.sub.6)alkyl or R.sup.2 is hydrogen and R.sup.1 is (C.sub.1 -C.sub.6)alkyl or hydrogen. The compound of formula VII R.sup.1 is (C.sub.1 -C.sub.6)alkyl. The compound of formula III. The compound of formula I is useful in the treatment of psychotic disorders.
一种制备化合物的方法,其
化学式为##STR1##,包括用还原剂处理化合物的步骤,该化合物的
化学式为##STR2##,其中R.sup.2为氢、CN或CO.sub.2 R.sup.1,R.sup.1为氢或(C.sub.1 -C.sub.6)烷基,但当R.sup.2为CN或CO.sub.2 R.sup.1且R.sup.1为(C.sub.1 -C.sub.6)烷基时,还原产物需与酸加热。其中R.sup.2为CN或CO.sub.2 R.sup.1且R.sup.1为(C.sub.1 -C.sub.6)烷基,或者R.sup.2为氢且R.sup.1为(C.sub.1 -C.sub.6)烷基或氢的化合物的
化学式II。
化学式VII的化合物中R.sup.1为(C.sub.1 -C.sub.6)烷基。
化学式III的化合物。
化学式I的化合物在治疗精神疾病中有用。