O. Karam et al., Synthesis of hydroindolenones and hydroquinolenones by hypervalent iodine oxidation of mono or bicyclic phenols, TETRAHEDR L, 40(22), 1999, pp. 4183-4186
Methoxy or fluoro hydroindolenones and hydroquinolenones can be obtained by
oxidation of the corresponding 4-substituted open-chain phenols with C6H5-
I-(OCOCF3)(2) with methanol or pyridinium polyhydrogen fluoride followed by
an intramolecular conjugate addition. The corresponding cycle 2,5-hexadien
ones can be obtained directly by a similar oxidation of the bicyclic phenol
s. (C) 1999 Elsevier Science Ltd. All rights reserved.