Oxidative cyclization of 3-cinnamoyltropolones with I<sub>2</sub>/DMSO/H<sub>2</sub>SO<sub>4</sub>system
作者:Wentao Gao、Yang Li、Hong Zhang、Mingqin Chang、Kimiaki Imafuku
DOI:10.1002/jhet.150
日期:2009.11
In this study, a facile and general method synthesizing flavone-like 2-aryl-4,9-dihydrocyclohepta[b]pyran-4,9-diones (2a–y) from 3-cinnamoyltropolones (1a–y) via oxidative cyclization reaction by using I2/DMSO/H2SO4 system is described. The method was found to be successfully applicable to a wide range of 3-cinnamoyltropolone derivatives and characterized by generality, compatibility, and easy work-up
在这项研究中,一种简便且通用的方法是通过氧化环化反应从3-肉桂酰基对苯二酚(1a-y)合成黄酮状的2-芳基-4,9-二氢环庚[ b ]吡喃-4,9-二酮(2a-y)通过使用I 2 / DMSO / H 2 SO 4系统进行描述。发现该方法成功地适用于广泛的3-肉桂酰基tropolone衍生物,并且具有通用性,兼容性和易于操作的特点。J.杂环化学,(2009)。