作者:Kanji Omura
DOI:10.1021/jo971307s
日期:1997.12.1
Symmetrically substituted bis(4-oxocyclohexa-2,5-dienyl) peroxide 5 (R = R') as well as unsymmetrically substituted 5 (R not equal R') can be prepared efficiently by treating 4-halogenocyclohexa-2,5-dienone 3 with 4-hydroperoxycyclohexa-2,5-dienone 4 in the presence of an appropriate positive halogen compound such as N-iodosuccinimide, Acetonitrile is a suitable solvent for the reaction, The formation of 5 is suggested to take place via electrophilic attack by the positive halogen species upon 3 generating the 4-oxocyclohexa-2,5-dienyl cation (or the phenoxy cation), followed by nucleophilic attack by 4 upon the cation, It is emphasized that some of the peroxides obtained by this means have not been prepared by the classical method, coupling of phenoxy radicals with O-2.