Xu Wen-Zhi, Huang Zhi-Tang, Zheng Qi-Yu
Beijing National Laboratory for Molecular Sciences, Research Center for Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
J Org Chem. 2008 Jul 18;73(14):5606-8. doi: 10.1021/jo8008929. Epub 2008 Jun 14.
A facile one-pot method to prepare benzo[c]xanthones from readily accessible benzylidene-1-tetralones by the ultraviolet radiation-mediated tandem reaction is reported. The overall transformation presumably involves cis-trans isomerization, oxa-6pi electrocyclization, singlet oxygen ene reaction, dehydration, and aromatization.
报道了一种简便的一锅法,通过紫外辐射介导的串联反应,从易于获得的亚苄基-1-四氢萘酮制备苯并[c]呫吨酮。整个转化过程可能涉及顺反异构化、氧杂-6π电环化、单线态氧烯反应、脱水和芳构化。