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24
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0000624398
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Cyclic dipeptide containing His residue has been used as asymmetric catalyst, see
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Cyclic dipeptide containing His residue has been used as asymmetric catalyst, see. Tanaka K., Mori A., and Inoue S. J. Org. Chem. 55 (1990) 181
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Tanaka, K.1
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29
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0342556205
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Hori F., Kojima Y., Matsumoto K., Ooi S., and Kuroya H. Bul. Chem. Soc. Jpn. 52 (1979) 1076
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Hori, F.1
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Matsumoto, K.3
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Kuroya, H.5
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31
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67649838234
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note
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3).
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32
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37049106714
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Fletcher A.R., Jones J.H., Ramage W.I., and Stachulski A.V. J. Chem. Soc., Perkin Trans. I (1979) 2261
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J. Chem. Soc., Perkin Trans. I
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Fletcher, A.R.1
Jones, J.H.2
Ramage, W.I.3
Stachulski, A.V.4
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33
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67649843751
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note
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2 in one-to-one stoichiometry.
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35
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34247854903
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Himes R.A., Park G.Y., Barry A.N., Blackburn N.J., and Karlin K.D. J. Am. Chem. Soc. 129 (2007) 5352
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(2007)
J. Am. Chem. Soc.
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Himes, R.A.1
Park, G.Y.2
Barry, A.N.3
Blackburn, N.J.4
Karlin, K.D.5
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36
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67649833487
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note
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2 was added dienophile (0.08 mmol) at rt under argon atmosphere. After the mixture was stirred for 30 min, it was cooled to the predetermined temperature. Cyclopentadiene (0.8 mmol) was added, and the mixture was stirred until the reaction was quenched by adding water and EtOAc. The organic layer was washed with brine, evaporated, and then purified by preparative thin layer chromatography (hexane: EtOAc = 2:1). The ratio of endo isomer and enantiomeric excess were determined by chiral HPLC.
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38
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67649856332
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note
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Two equivalent of ligand 4 was used toward Cu(II) ion.
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-
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39
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67649835799
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note
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3).
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