14064-92-7Relevant articles and documents
Spirodienones. Part 2. The Synthesis of Some Heterocyclic Spirodienones by Phenolic Coupling
Coutts, Ian G. C.,Hamblin, Michael R.,Welsby, Sheila E.
, p. 493 - 497 (2007/10/02)
The oxidation with active manganese dioxide of a series of 2,4'-dihydroxydiphenyl ethers to the corresponding p-benzoquinone monoacetals (1,3-benzodioxole-2-spirocyclohexadien-4'-ones) is described; among the dienones prepared were monoacetals of nitro-p-benzoquinone and of p-fluoranil.Attempted ether formation with 2,6-di-t-butyl-4-bromophenol and either 2- or 3-methoxyphenol failed, small quantities of unsymmetric biphenyls being formed in a novel arylation reaction.A spirobenzoxazole can be prepared by oxidation of a 2,4'-dihydroxydiphenylamine.Substituent effects in the hydrolysis of derived spirodienols have been observed.