Synthesis and physical properties of [4]cyclo-3,7-dibenzo[b,d]thiophene and its S,S-dioxide
作者： Eiichi Kayahara , Xue Zhai , Shigeru Yamago
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摘要: Cyclic tetramers of 3,7-dibenzo[b,d]thiophene (DBT) and 3,7-dibenzo[b,d]thiophene-5,5-dioxide (DBTO), i.e., [4]cyclo-DBT ([4]CDBT) [4]cyclo-DBTO ([4]CDBTO), respectively, are synthesized by the platinum-mediated assembly bis-metallated DBT DBTO subsequent reductive elimination platinum. This is first example synthesis sulfur-containing cycloparaphenylene (CPP) derivatives. The structure [4]CDBTO unambiguously determined single crystal X-ray analysis. Theoretical experimental analyses their physical properties reveal effect sulfur atom sulfonyl group at periphery biphenyl units CPP.
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