Synthesis of Benzo[<i>c</i>]xanthones from 2-Benzylidene-1-tetralones by the Ultraviolet Radiation-Mediated Tandem Reaction
作者:Wen-Zhi Xu、Zhi-Tang Huang、Qi-Yu Zheng
DOI:10.1021/jo8008929
日期:2008.7.1
A facile one-pot method to prepare benzo[c]xanthones from readily accessible benzylidene-1-tetralones by the ultraviolet radiation-mediated tandemreaction is reported. The overall transformation presumably involves cis−trans isomerization, oxa-6π electrocyclization, singlet oxygen ene reaction, dehydration, and aromatization.
报道了一种容易的一锅法,该方法通过紫外线介导的串联反应从容易获得的亚苄基-1-四氢萘酮制备苯并[ c ]氧杂蒽。整个转化可能涉及顺反异构化,oxa-6π电环化,单线态氧烯反应,脱水和芳构化。