Oxidation of <i>p</i>-Aminophenols and Formal Radical Cyclization onto Benzene Rings: Formation of Benzo-Fused Nitrogen Heterocycles
作者:Stephen P. Fletcher、Derrick L. J. Clive、Jianbiao Peng、David A. Wingert
DOI:10.1021/ol047977j
日期:2005.1.1
methanol, and the ketones undergo radical cyclization. Exposure of the products to acid or sequential treatment with a Grignard reagent and acid effects rearomatization to produce benzo-fused nitrogenheterocycles 4.
Mixed Quinone Monoketals via Iodobenzene Diacetate Oxidation
作者:Amy E. Fleck、Julie A. Hobart、Gary W. Morrow
DOI:10.1080/00397919208021090
日期:1992.1
Abstract Oxidation of p-methoxyphenol, 4-methoxynaphthol and 4-acetamidophenol with iodobenzenediacetate in various alcohols as solvent afforded the corresponding mixed quinone or naphthoquinone monoketals in good yield. Oxidation of p-methoxyphenol in the presence of sorbyl alcohol led to in situ intramolecular Diels-Alder reactions proceeding by way of the corresponding mixed quinone monoketal.