L. Niimi et al., Lewis acid-catalyzed three-component condensation reactions of aldehydes, alkoxysilanes, and propargylsilane: synthesis of alpha-allenyl ethers, TETRAHEDR L, 42(9), 2001, pp. 1721-1724
For simultaneous construction of a polyether backbone and the allenyl side
chains, Lewis acid-catalyzed three-component condensation reactions of alde
hydes, alkoxytrimethylsilanes, and 1-trimethylsilyl-2-butyne were studied.
The reaction of these three compounds took place in the presence of a catal
ytic amount of TrClO4 at -78 degreesC to yield the corresponding alpha -all
enyl ethers in good yields. This reaction was also applied to the synthesis
of a polyether having allenyl side chains. (C) 2001 Elsevier Science Ltd.
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