Oxidation of Chromanones and 2-Spirochromanones with [Hydroxy(tosyloxy)iodo]benzene in Acetonitrile Under Reflux as well as Ultrasound: A Convenient Route for the Synthesis of Chromones, Tetrahydroxanthones, and Their Higher Homologues
作者:Devinder Kumar、Om V. Singh、Om Prakash、Shiv P. Singh
DOI:10.1080/00397919408010576
日期:1994.10
Abstract Oxidation of chromanones (1a-i) and 2-spiro-chromanones (j-m) using [hydroxy(tosyloxy)iodo] benzene in refluxing acetonitrile as well as using ultrasound via dehydrogenation and 2,3-alkyl migration provides a convenient route for the synthesis of chromones (2a-i), tetrahydroxanthones (2j,k) and their higher homologues (21,m). The ultrasound also enhances substantially the rate of above transformations
摘要 使用 [羟基(甲苯磺酰氧基)碘] 苯在回流乙腈中氧化色满酮 (1a-i) 和 2-螺-色满酮 (jm) 以及通过脱氢和 2,3-烷基迁移使用超声为色酮 (2a-i)、四氢氧杂蒽酮 (2j,k) 及其高级同系物 (21,m) 的合成。超声还大大提高了上述转换的速率。