申请人:BASF Aktiengesellschaft
公开号:US05166443A1
公开(公告)日:1992-11-24
A process for the preparation of a 2,2-disubstituted pentane-1,5-diamine of the formula I ##STR1## where R.sup.1 and R.sup.2, independently of one another, are C.sub.1 - to C.sub.10 -alkyl or C.sub.2 - to C.sub.10 -alkenyl or together are a C.sub.4 - to C.sub.7 -alkylene chain which is unsubstituted or monosubstituted to pentasubstituted by C.sub.1 - to C.sub.4 -alkyl, from a 2,2-disubstituted 4-cyanobutanal of the formula II ##STR2## where R.sup.1 and R.sup.2 are as defined above, comprises, in two spatially separate reaction spaces, a) reacting the 4-cyanobutanal of the formula II, in a first reaction space, with excess ammonia on an acidic heterogeneous catalyst at from 20.degree. to 150.degree. C. and at from 15 to 500 bar, and b) hydrogenating the resultant reaction product, in a second reaction space, using excess hydrogen in the presence of excess ammonia on a catalyst containing cobalt, nickel, ruthenium and/or another noble metal, if desired with a basic component or on a basic or neutral carrier, at from 60.degree. to 150.degree. C. and at from 50 to 500 bar.
一种制备式I的2,2-二取代戊烷-1,5-二胺的方法,其中R1和R2独立地为C1-C10烷基或C2-C10烯基,或者一起为未取代或经由C1-C4烷基单取代至五取代的C4-C7亚烷基链,从式II的2,2-二取代4-氰基丁醛中制备,式II如下:其中R1和R2如上所定义,包括在两个空间分离的反应空间中,a) 在第一个反应空间中,在酸性杂多催化剂上,以20°C至150°C和15至500巴的条件下,用过量氨与式II的4-氰基丁醛反应,b) 在第二个反应空间中,在存在过量氨的情况下,在含钴、镍、钌和/或其他贵金属的催化剂上,如有需要,可含有碱性组分或在碱性或中性载体上,以60°C至150°C和50至500巴的条件下,用过量氢气加氢反应产生的反应产物。