Synthesis 2007(4): 565-571  
DOI: 10.1055/s-2007-965888
PAPER
© Georg Thieme Verlag Stuttgart · New York

Facile Syntheses of Cavitands with Sulfur-Containing Functional Groups

Tim Vorfalt, Herbert Plenio*
Anorganische Chemie im Zintl-Institut, TU Darmstadt, Petersenstr. 18, 64287 Darmstadt, Germany
e-Mail: Plenio@tu-darmstadt.de;
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Publikationsverlauf

Received 4 July 2006
Publikationsdatum:
12. Januar 2007 (online)

Abstract

The reactions of the (CH2Br)4-cavitand 1 with variable amounts of KSAc produce various (CH2Br)4-n(CH2SAc)n-cavitands (n = 0-4). Acetyl chloride and the (CH2SH)4-cavitand react to generate various (CH2SH)4-n(CH2SAc)n-cavitands (n = 0-4), which both constitute useful building blocks for hemicarcerand synthesis. Binuclear sulfur-bridged hemicarcerands are available by the reaction of CH2Br and CH2SH functional groups in the respective cavitands. The thioacetate protective group in such binuclear cavitands can be cleaved with LiAlH4 to result in the formation of the respective hemicarcerands with up to six SH groups.