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.
Xu
Wen-Zhi
WZ
Beijing National Laboratory for Molecular Sciences, Research Center for Chemical Biology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
Huang
Zhi-Tang
ZT
Zheng
Qi-Yu
QY
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