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Synlett 2003(7): 1002-1006
DOI: 10.1055/s-2003-39294
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

The Synthesis of Axially Chiral Resorcinarenes from Resorcinol Monoalkyl Ethers and Aldehyde Dimethylacetals

Jonathan Y. Boxhall, Philip C. Bulman Page, Mark R. J. Elsegood, Yohan Chan, Harry Heaney*, Kathryn E. Holmes, Matthew J. McGrath
Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK
Fax: +44(1509)223925; e-Mail: h.heaney@lboro.ac.uk;
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Publikationsverlauf

Received 27 February 2003
Publikationsdatum:
20. Mai 2003 (online)

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Abstract

Novel racemic tetraalkoxyresorcinarene derivatives can be prepared in good yields by boron trifluoride diethyl etherate-catalysed reactions of 1,1-dimethoxyalkanes with resorcinol monoalkyl ethers.

Key words

dimethylacetals - boron trifluoride - calixarenes - resorcinarenes - resorcinol monoalkyl ethers

    References

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4

The abbreviated structures, shown as a tetramer in Scheme [1] , Scheme [2] , Scheme [3] and Scheme [5] , are taken to represent a cyclic structure viewed from the inside of the resorcinarene and with the pendent alkyl chains in pseudoaxial orientations.

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Tetra-iso-propyloxyresorcinarene(1). MS (FAB): m/z [M + H+] found 937.65710. C60H89O8 requires 937.65579. Found: C, 76.91; H, 9.41%. C60H88O8 requires C, 76.88, H, 9.46%. IR: νmax = 3418, 2931, 2089, 1626, 1494, 1108, 738 cm-1. 1H NMR (400 MHz, CDCl3): δ = 0.89 (t, 12 H, J = 7.2 Hz), 1.26-1.40 (m, 48 H), 2.14-2.23 (m, 8 H), 4.27 (t, 4 H, J = 7.6 Hz), 4.55 (sept., 4 H, J = 6.4 Hz), 6.34 (s, 4 H), 7.23 (s, 4 H), 7.69 (s, 4 H) ppm. 13C NMR (100 MHz, CDCl3): δC = 14.15 (Me), 21.85 (Me), 21.87 (Me), 22.72 (CH2), 27.81 (CH2), 31.96 (CH2), 33.40 (CH), 34.05 (CH2), 71.81 (CH), 102.61 (CH), 123.77 (CH), 125.43 (C), 125.67 (C), 151.77 (C), 152.88 (C) ppm.

10

Crystallographic data in cif format (ref. CCDC 206434 & 206435). Copies can be obtained free of charge from: CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK, or e-mail: deposit@ccdc.cam.ac.uk or www.ccdc.cam.ac.uk.

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MS (FAB): m/z (100%) [M + H+] found 1041.71790, C68H92O8 requires 1041.71830. 1H NMR (400 MHz, CDCl3): δ = 0.89 (m, 12 H), 1.30 (m, 24 H), 1.75 (m, 32 H), 2.17 (m, 8 H), 4.24 (t, 4 H, J = 7.8 Hz), 6.36 (s, 4 H), 7.23 (s, 4 H) ppm. 13C NMR (100 MHz, CDCl3): δ =14.55 (Me), 23.08 (CH2), 24.07 (CH2), 24.41 (CH2), 28.11 (CH2), 32.23 (CH2), 33.29 (CH2), 33.59 (CH), 34.34 (CH2), 81.50 (CH), 102.91 (CH), 124.03 (CH), 125.50 (C), 125.79 (C), 152.06 (C), 152.99 (C) ppm.