By heating a dilute solution of the potassium salt of 5-(p-hydroxyphenyl)-1-bromopentane (I) it is possible to obtain spiro-[5:5]-undeca-1,4-diene-3-one (II) in good yield. During this intramolecular alkylation a phenolic ring is changed into a cyclohexadienone. The term desaromatisation is applied to this reaction.
通过加热5-(对羟基苯基)-
1-溴戊烷(I)的
钾盐的稀溶液,可以获得螺-[5:5] -undeca-1,4-二烯-3-酮(II) ),产量高。在该分子内烷基化过程中,
酚环变成环
己二烯酮。术语脱芳构作用适用于该反应。