- Stoichiometric Reactions of CO2 and Indium-Silylamides and Catalytic Synthesis of Ureas
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The indium compounds In(N(SiMe3)2)2Cl?THF (2) and In(N(SiMe3)2)Cl2?(THF)n (3) were shown to react with CO2 to give [(Me3Si)2N)InX(μ-OSiMe3)]2 (X=N(SiMe3)2 4, Cl 5). 0.05–2.0 mol % of the species 3 acts as a pre-catalyst for the conversion of aryl and alkyl silylamines under CO2 (2–3 atm) to give the corresponding ureas in 70–99 % yields. A proposed mechanism is supported by experimental and computational data.
- Xu, Maotong,Jupp, Andrew R.,Stephan, Douglas W.
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supporting information
p. 14277 - 14281
(2017/10/31)
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- Organosilicon synthesis of isocyanates: I. Synthesis of isocyanates of the furan, thiophene, and mono-and polyfluorophenyl series
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A convenient synthesis of known and unknown isocyanates of the furan, thiophene, and mono-and polyfluorophenyl series, involving silylation of starting amines with hexamethyldisilazane or chlorotrimethylsilane, followed by phosgenation of the resulting N-silyl-substituted amines. An unusual high-temperature rearrangement of 3-(methoxycarbonyl)-4,5-dimethylthiophene-2-yl isocyanate into its 5-ethyl isomer. ortho-Fluorine substituent in anilines decreases the yield of isocyanates, whereas 2,3,5,6-tetrafluorophenyl isocyanate exists for only a short time as a 5% toluene solution. Pleiades Publishing, Inc. 2006.
- Lebedev,Lebedeva,Sheludyakov,Ovcharuk,Kovaleva,Ustinova
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p. 110 - 115
(2008/01/27)
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- Selective electrochemical synthesis and reactivity of functional benzylic fluorosilylsynthons
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Electrochemical reductive silylation of meta-(trifluoromethyl)arenes by the sacrificial anode technique selectively led to meta-trimethylsilyldifluoromethylarenes (ArCF2TMS), in the presence of an excess of TMSCl and in a THF/cosolvent mixture
- Clavel, Philippe,Lessene, Guillaume,Biran, Claude,Bordeau, Michel,Roques, Nicolas,Trévin, Stéphane,Montauzon, Dominique De
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p. 301 - 310
(2007/10/03)
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