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.
对于式子##STR1##中,R.sup.1为杂环芳基或芳基,R.sup.2为离去基,R.sup.3、R.sup.4、R.sup.5和R.sup.6独立地选自氢、烷基、芳基烷基、芳基、杂环芳基和烯基,但至少其中一个R.sup.3到R.sup.6不是氢,通过在有机溶液中使用硅胶断裂连接到R.sup.3的碳原子和连接到R.sup.6的碳原子的键,使得有用的二烯或烯丙基衍生物得到,其中某些是新颖的。