Synthesis of 3H-Quinazolin-4-ones and 4H-3,1-Benzoxazin-4-ones via Benzylic Oxidation and Oxidative Dehydrogenation using Potassium Iodide-tert-Butyl Hydroperoxide
作者:R. Arun Kumar、C. Uma Maheswari、Satheesh Ghantasala、C. Jyothi、K. Rajender Reddy
DOI:10.1002/adsc.201000580
日期:2011.2.11
and elegant method for benzylic activation was demonstrated employing the potassium iodide/tert-butyl hydrogen peroxide catalytic system. This methodology was further extended for the synthesis of biologically important heterocycles namely, 3H-quinazolin-4-ones and 4H-3,1-benzoxazin-4-ones including mecloqualone and etaqualone which are important quinazolinone-based drugs used for the treatment of insomnia
用碘化钾/叔丁基过氧化氢催化体系证明了一种简单而优雅的苄基活化方法。该方法被进一步扩展为合成重要的杂环化合物,即3 H-喹唑啉-4-酮和4 H -3,1-苯并恶嗪-4-酮,包括甲氯喹酮和依他马酮,这是用于治疗的基于喹唑啉酮的重要药物失眠的好收成。