申请人:Shell Research Limited
公开号:US05126461A1
公开(公告)日:1992-06-30
Process for ring opening compounds of the formula ##STR1## in which R.sup.1 is heteroaryl or aryl, R.sup.2 is a leaving group, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently selected from hydrogen, alkyl, aralkyl, aryl, heteroaryl and alkenyl, provided that at least one of the groups R.sup.3 to R.sup.6 is other than hydrogen, by breaking the bond joining the carbon atom attached to R.sup.3 and the carbon atom attached to R.sup.6 in organic solution using silica, giving useful diene or allyl derivatives, certain of which are novel.
使用有机溶剂和硅胶,在化合物的环上打开环的过程中,通过断裂连接R.sup.3和R.sup.6的碳原子之间的键,并得到有用的二烯或烯丙基衍生物,其中R.sup.1是杂环烷基或芳基,R.sup.2是离去基团,R.sup.3、R.sup.4、R.sup.5和R.sup.6分别独立地选自氢、烷基、芳基烷基、芳基、杂环烷基和烯基,前提是R.sup.3到R.sup.6中至少有一个不是氢,其中一些是新颖的。