Catalytic oxidation of para-substituted phenols with nitrogen dioxide and oxygen

✍ Scribed by Joseph J. Bozell; John O. Hoberg; Donald R. Dimmel

• Publisher: Elsevier Science
• Year: 1998
• Tongue: French
• Weight: 293 KB
• Volume: 39
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(98)00242-1

✦ Synopsis

A series of para-substituted phenols was oxidized to the corresponding benzoquinones in moderate to high yield with catalytic amounts of NO:! under 02 in MeOH. Little or no oxidation is observed under argon. Substrates of lower reactivity gave quinones when treated with stoichiometric amounts of NO2 in CCl4. but nitration of the aromatic ring became a significant side product, 0 I998 Elsevier Science Ltd. All rights reserved.