Process for the preparation of 8 -[4 -[4-(pyrimidine-2-yl)-piperazine-1-yl]-butyl]-8-aza-spiro[4.5]decane-7,9-d ione (buspiron) of the Formula I ##STR1## and the hydrochlorides thereof having high purity by continuously adding a solution of 8-[4-[4-(pyrimidine-2-yl)-piperazine-1-yl]-but-2 -inyl]-8-aza-spiro[4.5]decane-7,9-dione of the formula II ##STR2## formed with an inert organic solvent having a concentration of at least 40% by weight to a suspension of a hydrogenation catalyst in an inert organic solvent and optionally converting the 8-[4-[4-(pyrimidine-2-yl)-piperazine-1-yl]-butyl]-8-aza-spiro[4.5]decane-7 ,9-dione thus obtained into the hydrochloride thereof.
制备8-[4-[4-(
嘧啶-2-基)-
哌嗪-1-基]-丁基]-8-氮杂
螺[4.5]癸烷-7,9-二酮(丁索酮)及其高纯度盐酸盐的方法,包括将浓度至少为40%的8-[4-[4-(
嘧啶-2-基)-
哌嗪-1-基]-丁-2-基]-8-氮杂
螺[4.5]癸烷-7,9-二酮(式II)与惰性有机溶剂形成的溶液连续加入到惰性有机溶剂中的氢化催化剂悬浮液中,可选地将得到的8-[4-[4-(
嘧啶-2-基)-
哌嗪-1-基]-丁基]-8-氮杂
螺[4.5]癸烷-7,9-二酮转化为其盐酸盐。