- Short-axis substitution approach selectively optimizes electrical properties of dibenzothiophene-based phosphine oxide hosts
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Two dibenzothiophene (DBT)-based phosphine oxide hosts, named 4-diphenylphosphoryl dibenzothiophene (DBTSPO) and 4,6-bis(diphenylphosphoryl) dibenzothiophene (DBTDPO), were prepared by short-axis substitution with the aim to selectively adjust electrical
- Han, Chunmiao,Zhang, Zhensong,Xu, Hui,Yue, Shouzhen,Li, Jing,Yan, Pingrui,Deng, Zhaopeng,Zhao, Yi,Yan, Pengfei,Liu, Shiyong
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p. 19179 - 19188
(2013/01/15)
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- Bidentate Phosphines of Heteroarenes: 4,6-Bis(diphenylphosphino)dibenzofuran and 4,6-Bis(diphenylphosphino)dibenzothiophene
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Twofold lithiathion of dibenzofuran (6) and dibenzothiophene (12) with n-butyllithium/ N,N,N',N'-tetramethylethylenediamine (TMEDA) in n-hexane or n-heptane followed by the reaction with chlorodiphenylphosphine yielded the title compounds 4 and 5, respectively.The monophosphines 4-(diphenylphosphino)dibenzofuran (11) and 4-(diphenylphosphino)dibenzothiophene (15) were obtained analogously via the monolithium compounds 9 and 14 of the heteroarenes.In the case of dibenzofuran (6), it was shown that mono- and dilithiation is controlled by temperature.Key Words: Phoshine ligands/ Dibenzofuran/ Dibenzothiophene/ Lithium compounds/ Multiple lithiation
- Haenel, Matthias W.,Jakubik, Dieter,Rothenberger, Eveline,Schroth, Gerhard
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p. 1705 - 1710
(2007/10/02)
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