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Synthesis 2007(4): 565-571
DOI: 10.1055/s-2007-965888
DOI: 10.1055/s-2007-965888
PAPER
© Georg Thieme Verlag Stuttgart · New York
Facile Syntheses of Cavitands with Sulfur-Containing Functional Groups
Further Information
Received
4 July 2006
Publication Date:
12 January 2007 (online)
Publication History
Publication Date:
12 January 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.
Key words
cavitand - thiols - supramolecular chemistry - macrocycles
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