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Other methods to prepare persilylated materials (always obtained as a mixture of compounds containing different number of silicon fragments), include: (a) trichlorinated precursors and magnesium (Merker, R.L.; Scott, M.J. J. Am. Chem. Soc. 1963, 85, 2243-2244),
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We thank a referee for calling our attention to this paper
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We thank a referee for calling our attention to this paper.
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73
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85031221102
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Another effect (electronic) to be considered comes from the fact that the more silyl groups atached to the carbanionic centre the less reactivity of the intermediate, so the more silylated carbanion is the more stable one
-
Another effect (electronic) to be considered comes from the fact that the more silyl groups atached to the carbanionic centre the less reactivity of the intermediate, so the more silylated carbanion is the more stable one.
-
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74
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85031222550
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In this case 10 mol % of DTBB was used as the catalyst
-
In this case 10 mol % of DTBB was used as the catalyst.
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75
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0343979794
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85031215049
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4 as starting material the best yield was obtained by warm the reaction mixture till 0° before the hydrolysis step
-
4 as starting material the best yield was obtained by warm the reaction mixture till 0° before the hydrolysis step.
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85031219060
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2O content measured gas-chromatographically) does not allow to determine D% content. Thus, calculated H/D% values are corrected considering this fact
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2O content measured gas-chromatographically) does not allow to determine D% content. Thus, calculated H/D% values are corrected considering this fact.
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