申请人:Sumitomo Chemical Company, Limited
公开号:US05004843A1
公开(公告)日:1991-04-02
Process for preparing predominantly Z-substituted allylic alcohols of the formula: ##STR1## wherein R.sup.1 is a straight or branched C.sub.1 -C.sub.25 alkyl group optionally bearing at least one substituent and/or at least one unsaturated linkage and R.sup.2 is a hydrogen atom or a methyl group, which comprises reacting a vinyl epoxide of the formula: ##STR2## wherein R.sup.2 is as defined above with an organolithium compound of the formula above. More particularly, there is disclosed a process for R.sup.1 --Li wherein R.sup.1 is as defined above; particularly, process for preparing .alpha.-santalol of the formula: ##STR3## which comprises reacting 3-methyl-3,4-epoxybutene-1 with lithiomethyl-2,3-dimethyltricyclo[2.2.1.0.sup.2,6 ]heptane.
制备主要为Z-取代烯丙基醇的方法的步骤:其中R.sup.1是一种直链或支链C.sub.1-C.sub.25烷基基团,可以携带至少一个取代基和/或至少一个不饱和键,并且R.sup.2是氢原子或甲基基团,包括将具有以下结构的乙烯环氧化物与上述结构的有机锂化合物反应。更具体地,公开了一种制备R.sup.1-Li的方法,其中R.sup.1如上定义;特别是,制备具有以下结构的α-桑瑟醇的方法:其中包括将3-甲基-3,4-环氧丁烯-1与锂甲基-2,3-二甲基三环[2.2.1.0.sup.2,6]庚烷反应。