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Short Paper | Regular issue | Vol 87, No. 9, 2013, pp.1889-1896
Published online, 7th August, 2013
DOI: 10.3987/COM-13-12760
A Metal-Free Oxidation of Benzo[c]chromen to Benzo[c]chromen-6-ones by t-Butyl Hydroperoxide in the Presence of Potassium Iodide

Jing Zhou, Pan Han, Ying-Meng Xu, Tao Zhang, and Zhen-Ting Du*

*College of Science, Northwest A&F University, Yangling 712100, Shaanxi Province, China


An effective and eco-friendly oxidation method for the synthesis of benzo[c]chromen-6-ones is described. The condition constitutes 6 molar ratio TBHP, catalytic KI and pyridine in acetonitrile as the solvent. Altogether, 16 structurally diverse substituted benzo[c]chromen-6-ones were prepared through this protocol from corresponding benzo[c]chromenes in excellent yields.