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(b) Hamann, B. C.; Branda, N. R.; Rebek, J., Jr. Tetrahedron Lett. 1993, 34, 6837-6840.
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(c) Fan, E.; Van Arman, S. A.; Kincaid, S.; Hamilton, A. D. J. Am. Chem. Soc. 1993, 115, 369-370.
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(e) Scheerder, J.; Engbersen, J. F. J.; Casnati, A.; Ungaro, R.; Reinhoudt, D. N. J. Org. Chem. 1995, 115, 6448-6454.
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For U-shaped di-, and tricarboxylic acids as molecular building blocks of synthetic clefts see; (a) Rebek, J., Jr. Top. Curr. Chem. 1988, 149, 189-210.
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(b) Jeong, K.-S.; Muehldorf, A. V.; Rebek, J., Jr. J. Am. Chem. Soc. 1990, 112, 6144-6145.
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c) Nowick, J. S.; Ballester, P.; Ebmeyer, F.; Rebek, J., Jr. J. Am. Chem. Soc. 1990, 112, 8902-8906.
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0001010912
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For other ditopic receptors for binding of diammonium salts see; (a) Smeets, J. W. H.; Sijbesma, R. P.; van Dalen, L.; Spek, A. L.; Smeets, W. J. J.; Nolte, R. J. M. J. Org. Chem. 1989, 54, 3710-3717.
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Sijbesma, R.P.2
Van Dalen, L.3
Spek, A.L.4
Smeets, W.J.J.5
Nolte, R.J.M.6
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0001309360
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(b) Fages, F.; Desvergne, J.-P.; Kampke, K.; Bouas-Laurent, H.; Lehn, J.-M; Meyer, M.; Albrecht-Gray, A.-M. J. Am. Chem. Soc., 1993, 115, 3658-3664.
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Fages, F.1
Desvergne, J.-P.2
Kampke, K.3
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Lehn, J.-M.5
Meyer, M.6
Albrecht-Gray, A.-M.7
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12
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85030186864
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note
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3) and 1.5 mL of diammonium dipicrate (0.50 mM in deionized water). All experiments were triplicated at 297 ± 1K. The amounts extracted were determined by changes in UV absorbance (370 nm) of picrates in aqueous solution and errors were less than 3% in the extraction percentages.
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13
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84987093690
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(a) Smeets, J. W. H.; Visser, H. C.; Kaats-Richters, V. E. M.; Nolte, R. J. M. Recl. Trav. Chim. Pays-Bas 1990, 109, 147-153.
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Recl. Trav. Chim. Pays-Bas
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Smeets, J.W.H.1
Visser, H.C.2
Kaats-Richters, V.E.M.3
Nolte, R.J.M.4
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14
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5344244992
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(b) Koenig, K. E.; Lein, G. M.; Stuckler, P.; Kaneda, T.; Cram, D. J. J. Am. Chem. Soc. 1979, 101, 3553-3566.
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Koenig, K.E.1
Lein, G.M.2
Stuckler, P.3
Kaneda, T.4
Cram, D.J.5
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15
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85030190238
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note
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1H NMR, FT-IR, and MS spectra. Mp: 8a 182-183 °C; 8b 170-172 °C; 8c 171-172 °C; 8d 172-173 °C; 8e 134-136 °C; 8f 168-170 °C.
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16
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0004187703
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John Wiley & Sons: New York
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Connors, K. A. Binding Constants; John Wiley & Sons: New York, 1984; p 24.
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Binding Constants
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Connors, K.A.1
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0028910290
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3 see; Wilcox, C. S.; Kim, E.-I.; Romano, D.; Kuo, L. H.; Burt, A. L.; Curran, D. P. Tetrahedron 1995, 51, 621-634.
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Wilcox, C.S.1
Kim, E.-I.2
Romano, D.3
Kuo, L.H.4
Burt, A.L.5
Curran, D.P.6
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19
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33750985304
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(b) Fujio, M; McIver, R. T., Jr.; Taft, R. W. J Am. Chem. Soc. 1981, 103, 4017-4029.
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Fujio, M.1
McIver R.T., Jr.2
Taft, R.W.3
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