Visible light-induced synthesis of 3,4-diarylthiophenes from 3,4-diaryl-2,5-dihydrothiophenes.
Using a catalytic amount of platinum(II) terpyridyl complex 3, 3,4-diarylthiophenes (2a-f) could be synthesized from 3,4-diaryl-2,5-dihydrothiophenes (1a-f) under visible light (λ > 450 nm) irradiation in degassed CH(3)CN. Spectroscopic study and product analysis reveal that the reaction is initiated by photoinduced electron transfer from 3,4-diaryl-2,5-dihydrothiophenes to platinum(II) complex 3, leading to the formation of 3,4-diarylthiophenes.
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
Yu-Zhe
YZ
Chen
Deng-Hui
DH
Wang
Bin
B
Chen
Jian-Ji
JJ
Zhong
Chen-Ho
CH
Tung
Li-Zhu
LZ
Wu
D000097:Acetonitriles; D002384:Catalysis; D004579:Electron Transport; D008027:Light; D008163:Luminescent Measurements; D015394:Molecular Structure; D055668:Photochemical Processes; D010984:Platinum / Q000737:chemistry*; D011522:Protons; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry*
D000097:Acetonitriles; D011522:Protons; D013876:Thiophenes; D010984:Platinum