申请人:Schering Aktiengesellschaft
公开号:US04077996A1
公开(公告)日:1978-03-07
A process for the preparation of trans-decahydronaphthalene compounds of Formula I ##STR1## wherein X is lower alkyl, --(CH.sub.2).sub.3 --Z--R.sub.2, ##STR2## --(CH.sub.2).sub.3 COOR.sub.4, or --(CH.sub.2).sub.3 CN; Y and Z are ketalized carbonyl or free, esterified, or etherified hydroxymethylene; U is halogen; R.sub.1, r.sub.2, and R.sub.3 are lower alkyl; and R.sub.4 is alkyl; Wherein an octahydronaphthalene compound of Formula II ##STR3## is converted, in the presence of bases, by reaction of a trialkyl chlorosilane of the formula (R.sub.5).sub.3 Si--Cl wherein the R.sub.5 each are lower alkyl group, to a hexahydronaphthalene compound of the formula ##STR4## The hexahydronaphthalene compound is hydrogenated, in an inert solvent with hydrogen in the presence of a platinum-, palladium-, or rhodium-containing hydrogenation catalyst, to an octahydronaphthalene compound of the formula ##STR5## and a vinyl ketone of the formula XCOCH.dbd.CH.sub.2 is added to the thus-obtained octahydronaphthalene compound in an inert solvent in the presence of a Lewis acid.
一种制备式I的反式十氢萘化合物的方法,其中X为低烷基、--(CH.sub.2).sub.3--Z--R.sub.2、--(CH.sub.2).sub.3COOR.sub.4或--(CH.sub.2).sub.3CN;Y和Z为酯化的羟甲基或自由的、酯化的或醚化的羟甲基;U为卤素;R.sub.1、R.sub.2和R.sub.3为低烷基;R.sub.4为烷基;其中式II的八氢萘化合物##STR3## 在碱的存在下,通过与式(R.sub.5).sub.3Si--Cl的三烷基氯硅烷反应,其中R.sub.5各自为低烷基基团,转化为式的六氢萘化合物##STR4## 在惰性溶剂中,与氢气在铂、钯或铑催化剂的存在下加氢,得到式的八氢萘化合物##STR5## 并在路易斯酸的存在下,在惰性溶剂中向所得的八氢萘化合物中加入式XCOCH.dbd.CH.sub.2的乙烯基酮。