- Reactions of sterically hindered organozinc and organocadmium compounds containing functional silicon centres. Crystal structures of Zn2 and Cd2
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The compound (Me3Si)2CCl2 was converted by treatment with BuLi/Et2O/THF and then with Me2HSiCl into (Me3Si)2CCl(SiMe2H).Further lithiation with BuLi gave LiC(SiMe3)2(SiMe2H), which reacted with ZnBr2 to yield Zn2.Thence, several new org
- Al-Juaid, Salih S.,Eaborn, Colin,Habtemariam, Abraha,Hitchcock, Peter B.,Smith, J. David
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- Preparation of the iodides (Me3Si)2C(SiMe2C6H4Y)(SiMe2I) and some related compounds
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The preparations of: (a) the iodides (Me3Si)2C(SiMe2C6H4Y)(SiMe2I) (Y=H, p-OMe, p-Me, p-Cl, m-CF3), via the corresponding hydrides; (b) the compounds (Me3Si)2C(SiMe2Ph)(SiMe2X) with X=F, O2CCF3, OMe, N3, NCS and Cl: and (c) the iodide (p-MeC6H4)3CSiMe2I are described. Key words: Silicon; Iodide; Fluoride; Hydride; Trimethylsilyl
- Eaborn, Colin,Jones, Karen L.,Lickiss, Paul D.
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- Reaction of (Me3Si)2C(SiMe2Ph)(SiEt2I) with AgBF4. 1,3-Migration of the Phenyl Group
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The reaction of (Me3Si)2C(SiMe2Ph)(SiEt2I) with AgBF4 in Et2O has been shown to give a ca. 2:3 ratio of the unrearranged (Me3Si)2C(SiMe2Ph)(SiEt2F) and the rearranged (Me3Si)2C(SiEt2Ph)(SiMe2F).The reaction is thought to proceed via a cation, II, in which
- Eaborn, Colin,Lickiss, Paul D.,Najim, Sabah T.,Stanczyk, Wlodzimierz A.
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- Anchimeric Assistance by γ-Aryl Groups in Solvolysis of Organosilicon Iodides. Some Remarkably Large Remote Substituent Effects
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The very large spread of rates in reactions of the iodides (Me3Si)2C(SiMe2C6H4X)(SiMe2I) (X = p-OMe, p-Me, H, p-Cl, or m-CF3) with (CF3)2CHOH and CF3CH2OH (the compound with X = p-OMe is 1.9E05 and 6.5E04 times, respectively, as reactive as that with X = m-CF3) is attributed to nucleophilic assistance by the aryl group to the leaving of the I- ion.
- Eaborn, Colin,Jones, Karen L.,Lickiss, Paul D.
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p. 595 - 596
(2007/10/02)
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- 1,3-Migration of a Phenyl Group via a Silicocation
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The reaction of (Me3Si)2C(SiMe2Ph)(SiEt2I) with AgBF4 in Et2O has been shown to give a ca. 2:3 ratio of the unrearranged (Me3Si)2C(SiMe2Ph)(SiEt2F) and the rearranged (Me3Si)2C(SiMe2F)(SiEt2Ph); the reaction is thought to proceed via a Ph-bridged cation (
- Eaborn, Colin,Lickiss, Paul D.,Najim, Sabah T.,Stanczyk, Wlodzimierz A.
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p. 1461 - 1462
(2007/10/02)
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