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0000974850
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The design of receptor units for carboxylates and phosphates is of much interest since they serve as anchoring sites for numerous biological substrates.
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[9al M. W. Hosseini, A. J. Blacker, J.-M. Lehn, J. Am. Chem. Soc. 1990, 772, 3896-3904. The design of receptor units for carboxylates and phosphates is of much interest since they serve as anchoring sites for numerous biological substrates.
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24
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33745413150
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28
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0000671816
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[12b] For an example of non-stereospecific hydrogénation of the metal-free macrocycle, see: K. Sakata, S. Wade, N. Sata, M. Kurisa, M. Hashimoto, Inorg. Chim Acta 1986, 119, 111-119.
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29
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33745402527
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note
-
Small amounts of mono- and of trisubstituted products were detected in the reaction mixtures by HPLC. The isomeric disubstituted products could not be separated by column chromatography. The use of more than 2 equiv. of BuLi and electrophile still yields a reaction mixture with isomeric disubstituted compounds as the major producs. However, substantial amounts of trisubstituted and small amounts of mono- and tetrasubstituted products were also detected.
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-
-
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31
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33745364451
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-
The less clean Raney nickel hydrogénations of disubstituted compounds require longer reaction times and higher temperatures.
-
[15) The less clean Raney nickel hydrogénations of disubstituted compounds require longer reaction times and higher temperatures.
-
-
-
-
32
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-
33751499319
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For typical conditions, see: [16a] H. Tsukube, H. Adachi, S. Morosawa, J. Org. Chcm. 1991, 56, 7102-7107.
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Tsukube, H.1
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33
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0029067663
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[16c] G. J. Bridger, R. T. Skerlj, D. Thornton, S. Padmanabhan, S. A. Martellucci, G. W. Henson, M. J. Abrams, N. Yamamoto, K. DeVreese, R. Pauwels, E. DeClercq, J. Meet. Chcm. 1995, 38, 366-378.
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Bridger, G.J.1
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Abrams, M.J.7
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Devreese, K.9
Pauwels, R.10
Declercq, E.11
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34
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-
33745392063
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Deprotonation with MeLi and treatment with Mel gave an N,N,N,N-tetramethylated derivative (2a-Me) of 2a.
-
[16d] Deprotonation with MeLi and treatment with Mel gave an N,N,N,N-tetramethylated derivative (2a-Me) of 2a.
-
-
-
-
35
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-
85088241877
-
-
2 see réf. [12]
-
2 see réf. [12]
-
-
-
-
36
-
-
33745401105
-
-
note
-
[17b] Crystallographic data (excluding structure factors) for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Centre. Copies of the data can be obtained free of charge on application to The Director, CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: int. code +(1223) 336-033, e-mail: deposit@chemcrys.cam.ac.uk), on quoting the depository number CCDC-100090.
-
-
-
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37
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-
33745332323
-
-
For cyclam metal complexes with square-planar coordination geometry, see
-
For cyclam metal complexes with square-planar coordination geometry, see:
-
-
-
-
39
-
-
33845550087
-
-
2: A. \V. Addison, E. Sinn, Inorg. Chem. 1983, 22, 1225-1228.
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Sinn, E.1
-
41
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-
33745392064
-
-
Cyclam and cyclam complexes give well-resolved NMR spectra at room temperature.
-
Cyclam and cyclam complexes give well-resolved NMR spectra at room temperature.
-
-
-
-
42
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0345434809
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-
F. V. Lovecchio, E. S. Gore, D. H. Busch, J. Am. Chem. Soc. 1974,96,3109-3118.
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43
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37049104739
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P. Zanello, R. Seeber, A. Cinquantini, G.-A. Mazzochin, L. Fabrizzi, J. Chem. Soc.. Dalton Trans. 1982, 893-987.
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-
44
-
-
33745398217
-
-
Ag/AgCl in LiCl-saturated ethanol was used as reference electrode. Potential vs. NHE: 143 mV.
-
Ag/AgCl in LiCl-saturated ethanol was used as reference electrode. Potential vs. NHE: 143 mV.
-
-
-
-
45
-
-
33745409039
-
-
- I23bl K. A. Connors, Binding Constants, Wiiey, New York, 1987.
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[23a] A E Marten, R. j. Motekaitis, Stability Constants, 2nd. Ed., VCH, New York, 1992. - I23bl K. A. Connors, Binding Constants, Wiiey, New York, 1987.
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Stability Constants, 2nd. Ed., VCH, New York
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-
-
46
-
-
33745367915
-
-
The kinetics of complex formation are currently under investigation.
-
[24) The kinetics of complex formation are currently under investigation.
-
-
-
-
47
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0028180563
-
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[25a] M shiyonoya, T. Ikeda, E. Kimura, M. Shiro, J. Am. Chem. Soc. 1994, 116, 3848-3859.
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0027236428
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49
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85088268594
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2O: E. Kimura, T. Shiota, f. Koike, M. Shiro, M. Kodama, J. Am. Chem. Soc. 1992, 112, 5805-5811.
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Shiro, M.1
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50
-
-
85088252519
-
-
a value of the imido proton of uridine under these conditions was determined as 11.91(3).
-
a value of the imido proton of uridine under these conditions was determined as 11.91(3).
-
-
-
-
51
-
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0000497576
-
-
4) with Zn-OCIO3 of 238 pm. T. A. Tyson, K. O. Hodgson, B. Hedman, G. R. Clark, Acta Cryst. (C) 1990, 46, 1638.
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