Intramolecular cyclisation of phenolic oximes. Part II. Cyclisations with brominating agents
作者:Alexander R. Forrester、Ronald H. Thomson、Soo-On Woo
DOI:10.1039/p19750002348
日期:——
Intramolecular cyclisation of p-hydroxyarylpropan-2-one oximes to 2,5-dienonespiroisoxazolines can be achieved by using bromine, N-bromosuccinimide, or tetrabromocyclohexa-2,5-dienone. With an analogous ortho-phenolic oxime only the last of these was effective, the structure of the 2,4-dienonespiroisoxazoline formed being confirmed by an independent synthesis.
的分子内环化p -hydroxyarylpropan -2-酮肟向2,5- dienonespiroisoxazolines可通过使用溴,来实现Ñ溴代琥珀酰亚胺,或tetrabromocyclohexa己-2,5-二烯酮。对于类似的邻苯酚肟,只有其中的最后一种有效,通过独立合成可以确认形成的2,4-二烯酮螺并恶唑啉的结构。