Synthesis of benzo[c]xanthones from 2-benzylidene-1-tetralones by the ultraviolet radiation-mediated tandem reaction.
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.
Beijing National Laboratory for Molecular Sciences, Research Center for Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
Wen-Zhi
WZ
Xu
Zhi-Tang
ZT
Huang
Qi-Yu
QY
Zheng
D001554:Benzene / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003500:Cyclization; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010777:Photochemistry; D044024:Tetralones / Q000737:chemistry*; D014466:Ultraviolet Rays; D044004:Xanthones / Q000138:chemical synthesis* / Q000737:chemistry
D044024:Tetralones; D044004:Xanthones; C015705:2-benzylidenetetralone; D001554:Benzene