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Volumn 11, Issue 11, 2000, Pages 2271-2275

Highly enantioselective addition of diethylzinc to N-diphenylphosphinylimines using dendritic chiral ligands with hydrocarbon backbones

Author keywords

[No Author keywords available]

Indexed keywords

AMINE; AMINOALCOHOL; DENDRIMER; DIETHYLZINC; HYDROCARBON; IMINE; LIGAND; N DIPHENYLPHOSPHINYLAMINE; N DIPHENYLPHOSPHINYLIMINE; UNCLASSIFIED DRUG;

EID: 0034674726     PISSN: 09574166     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0957-4166(00)00194-4     Document Type: Article
Times cited : (35)

References (45)
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    • For example, see: (a) Suzuki, T.; Narisada, N.; Shibata, T.; Soai, K. Polym. Adv. Technol. 1999, 10, 30-38; (b) Itsuno, S.; Sakurai, Y.; Ito, K.; Maruyama, T.; Nakahama, S.; Fréchet, J. M. J. J. Org. Chem. 1990, 55, 304-310; (c) Sellner, H.; Seebach, D. Angew. Chem., Int. Ed. 1999, 38, 1918-1920; (d) Watanabe, M.; Soai, K. J. Chem. Soc., Perkin Trans. 1 1994, 837-842.
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    • (c)
    • For example, see: (a) Suzuki, T.; Narisada, N.; Shibata, T.; Soai, K. Polym. Adv. Technol. 1999, 10, 30-38; (b) Itsuno, S.; Sakurai, Y.; Ito, K.; Maruyama, T.; Nakahama, S.; Fréchet, J. M. J. J. Org. Chem. 1990, 55, 304-310; (c) Sellner, H.; Seebach, D. Angew. Chem., Int. Ed. 1999, 38, 1918-1920; (d) Watanabe, M.; Soai, K. J. Chem. Soc., Perkin Trans. 1 1994, 837-842.
    • (1999) Angew. Chem., Int. Ed. , vol.38 , pp. 1918-1920
    • Sellner, H.1    Seebach, D.2
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    • (d)
    • For example, see: (a) Suzuki, T.; Narisada, N.; Shibata, T.; Soai, K. Polym. Adv. Technol. 1999, 10, 30-38; (b) Itsuno, S.; Sakurai, Y.; Ito, K.; Maruyama, T.; Nakahama, S.; Fréchet, J. M. J. J. Org. Chem. 1990, 55, 304-310; (c) Sellner, H.; Seebach, D. Angew. Chem., Int. Ed. 1999, 38, 1918-1920; (d) Watanabe, M.; Soai, K. J. Chem. Soc., Perkin Trans. 1 1994, 837-842.
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    • For the ligands with one chiral site possessing dendritic substituents, see: (a) Bolm, C.; Derrien, N.; Seger, A. Synlett 1996, 387-388; (b) Rheiner, P. B.; Sellner, H.; Seebach, D. Helv. Chim. Acta 1997, 80, 2027-2032; (c) Rheiner, P. B.; Seebach, D. Chem. Eur. J. 1999, 5, 3221-3236; (d) Hu, Q.-S.; Pugh, V.; Sabat, M.; Pu, L. J. Org. Chem. 1999, 64, 7528-7536; (e) Brunner, H.; Altmann, S. Chem. Ber. 1994, 127, 2285-2296.
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    • (b)
    • For the ligands with one chiral site possessing dendritic substituents, see: (a) Bolm, C.; Derrien, N.; Seger, A. Synlett 1996, 387-388; (b) Rheiner, P. B.; Sellner, H.; Seebach, D. Helv. Chim. Acta 1997, 80, 2027-2032; (c) Rheiner, P. B.; Seebach, D. Chem. Eur. J. 1999, 5, 3221-3236; (d) Hu, Q.-S.; Pugh, V.; Sabat, M.; Pu, L. J. Org. Chem. 1999, 64, 7528-7536; (e) Brunner, H.; Altmann, S. Chem. Ber. 1994, 127, 2285-2296.
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    • (c)
    • For the ligands with one chiral site possessing dendritic substituents, see: (a) Bolm, C.; Derrien, N.; Seger, A. Synlett 1996, 387-388; (b) Rheiner, P. B.; Sellner, H.; Seebach, D. Helv. Chim. Acta 1997, 80, 2027-2032; (c) Rheiner, P. B.; Seebach, D. Chem. Eur. J. 1999, 5, 3221-3236; (d) Hu, Q.-S.; Pugh, V.; Sabat, M.; Pu, L. J. Org. Chem. 1999, 64, 7528-7536; (e) Brunner, H.; Altmann, S. Chem. Ber. 1994, 127, 2285-2296.
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    • (d)
    • For the ligands with one chiral site possessing dendritic substituents, see: (a) Bolm, C.; Derrien, N.; Seger, A. Synlett 1996, 387-388; (b) Rheiner, P. B.; Sellner, H.; Seebach, D. Helv. Chim. Acta 1997, 80, 2027-2032; (c) Rheiner, P. B.; Seebach, D. Chem. Eur. J. 1999, 5, 3221-3236; (d) Hu, Q.-S.; Pugh, V.; Sabat, M.; Pu, L. J. Org. Chem. 1999, 64, 7528-7536; (e) Brunner, H.; Altmann, S. Chem. Ber. 1994, 127, 2285-2296.
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    • (e)
    • For the ligands with one chiral site possessing dendritic substituents, see: (a) Bolm, C.; Derrien, N.; Seger, A. Synlett 1996, 387-388; (b) Rheiner, P. B.; Sellner, H.; Seebach, D. Helv. Chim. Acta 1997, 80, 2027-2032; (c) Rheiner, P. B.; Seebach, D. Chem. Eur. J. 1999, 5, 3221-3236; (d) Hu, Q.-S.; Pugh, V.; Sabat, M.; Pu, L. J. Org. Chem. 1999, 64, 7528-7536; (e) Brunner, H.; Altmann, S. Chem. Ber. 1994, 127, 2285-2296.
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    • Note
    • 3OH).
  • 45
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    • The enantioselective addition of diethylzinc to imine 3a in the presence of 1.0 mol. equiv. of (1R,2S)-N-benzylephedrine for 24 h gave the corresponding (R)-amine 4a with 92% e.e. in the yield of 91%. It should be noted that, in the reaction using chiral ligand 2, a lesser amount of chiral ligand 2 (0.17 mol. equiv.) was utilized (Table 1, Entry 8)
    • The enantioselective addition of diethylzinc to imine 3a in the presence of 1.0 mol. equiv. of (1R,2S)-N-benzylephedrine for 24 h gave the corresponding (R)-amine 4a with 92% e.e. in the yield of 91%. It should be noted that, in the reaction using chiral ligand 2, a lesser amount of chiral ligand 2 (0.17 mol. equiv.) was utilized (Table 1, Entry 8).


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