A. Kawachi et K. Tamao, Mixed reagent (aminosilyl)lithium/i-PrMgBr for the synthesis of functionalized oligosilanes, J ORGMET CH, 601(2), 2000, pp. 259-266
Mixed reagents prepared in situ from the (aminosilyl)lithiums with i-PrMgBr
undergo coupling reactions with chloro-oligosilanes without Si-Si bond cle
avage, which is a serious side reaction with the (aminosilyl)lithiums thems
elves. Based on the coupling reaction and the amino-to-chloro transformatio
n, functionalized tetrasilanes and hexasilanes are synthesized. The analysi
s of the H-1- and Si-29-NMR spectra indicates that these oligosilanes inclu
de three configurational isomers, ll, ul, and uu. (C) 2000 Elsevier Science
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