Journal of Organometallic Chemistry p. 5 - 14 (1995)
Update date:2022-08-29
Topics:
Crandall, Jack K.
Morel-Fourrier, Christophe
The behavior of isopropyltrimethoxysilane (1) in the presence one equivalent of water and a dibutyltin dilaurate catalyst has been investigated.Under these conditions, partial hydrolysis of the methoxy groups of 1 occurred, followed by condensation reactions leading to the formation of low molecular-weight oligomers.Disiloxane 4, trisiloxane 6 and cyclic siloxanes 7 and 8 have been isolated and fully characterized.Transient reaction intermediates silanol 3 and hydroxydisiloxane 5 have been characterized spectroscopically.The time evolution of these species was followed by gas chromatography and 29Si NMR.A reaction scheme for the hydrolytic condensation of 1 is proposed to accommodate these results. Keywords: Silicon; Siloxanes; Hydrolysis; Nuclear magnetic resonance
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