- Spatial extent of the singlet and triplet excitons in luminescent angular-shaped transition-metal diynes and polyynes comprising non-π-conjugated Group 16 main group elements
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A novel approach based on conjugation interruption has been developed and is presented for a series of luminescent and thermally stable chalcogen-bridged platinum(II) polyyne polymers trans-[{-Pt(PBu3)2C≡C- (C6H4/sub
- Poon, Suk-Yue,Wong, Wai-Yeung,Cheah, Kok-Wai,Shi, Jian-Xin
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- Cu-catalyzed synthesis of symmetric group 6 (Fischer) bis-carbene complexes
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The efficient copper oxidative homocoupling (CuCl/TMEDA/O2) of alkynyl Fischer carbene complexes yields bis-carbene complexes having π-tethers. The bimetallic complexes are exceptional templates to prepare diverse organic symmetric structures c
- Lopez-Alberca, Maria P.,Mancheno, Maria J.,Fernandez, Israel,Gomez-Gallego, Mar,Sierra, Miguel A.
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p. 365 - 368
(2008/09/19)
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- Synthesis of ethynyl end-capped oligo-aryl ethers
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A series of aryl ether oligomers end-capped with ethynyl groups have been synthesised via a three-step process, i.e. iodination of oligo-aryl ethers, nucleophilic substitution of the iodide group with 2-methyl-3-butyn-2-ol catalysed by Pd/Cu and subsequen
- Xu, Jinfeng,Lai, Guo-Qiao,Wang, Cheng-Yun,Shen, Yong-Jia
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p. 572 - 574
(2007/10/03)
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- The 'Inverse Electron-demand' Diels-Ader Reaction in Polymer Synthesis. Part 1. A Convenient Synthetic Route to Diethynyl Aromatic Compounds
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The simple procedure whereby acetophenone derivatives are converted, by reaction with phosphoryl chloride and N,N-dimethylformamide, into β-chlorocinnamaldehydes, and thence, by base-induced elimination, into ethynylarenes, has been extended to diketones of the type MeCOC6H4COMe (m- and p-) and (p-MeCOC6H4)2X (X = O, S, SO2, CH2, CO, or a single bond): the corresponding diethynyl compounds are obtained by this route in acceptable yield. 1,3,5-Triacetylbenzene is similarly converted into 1,3,5-triethynylbenzene.
- Royles, Brodyck J. L.,Smith, David M.
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p. 355 - 358
(2007/10/02)
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