Tetrahedron Letters p. 2043 - 2046 (2004)
Update date:2022-09-26
Topics:
Stursa, Jan
Dvorakova, Hana
Smidrkal, Jan
Petrickova, Hana
Moravcova, Jitka
Treatment of 2,4-diisopropoxybenzyl alcohol with chlorotrimethylsilane in acetonitrile at room temperature for 1h afforded a novel crystalline resorc[4]arene octaisopropyl ether in 96% yield. Protecting groups were cleaved by boron trichloride in dichloromethane within 30min and the parent resorc[4]arene was isolated by flash chromatography in 76% yield. The outcome of the deprotection step was dependent on the conditions used as it is exemplified by a preparation of resorc[4]arene heptaisopropyl ether.
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