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Volumn 43, Issue 1, 2004, Pages 70-74

Synthesis of Versatile Chiral N,P Ligands Derived from Pyridine and Quinoline

Author keywords

Asymmetric catalysis; Heck reaction; Hydrogenation; Ligand design; N,P ligands

Indexed keywords

STERIC EFFECTS;

EID: 3042732577     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200352755     Document Type: Article
Times cited : (126)

References (48)
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    • note
    • Dihydroxylation of 2-vinylpyridine afforded the corresponding diol in only 15% yield (94% ee).
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    • For long-term storage (> 2 weeks), complexes were kept under argon at -25 °C.
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    • -3, located near the metal center. There were no restraints applied. Hydrogen atoms were calculated and refined as riding atoms. Data collection was performed with a Kappa CCD diffractometer. Programs used: structure solution: SIR79 (A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A. Guagliardi, A. Grazia, G. Moliterni, G. Polidori, R. Spagna, J. Appl. Crystallogr. 1999, 32, 115), structure refinement: CRYSTALS (D. J. Watkin, Crystals, Issue 11, Chemical Crystallography Laboratory, Oxford, 2001), weighting scheme: Chebychev polynomial (J. R. Carruthers, D. J. Watkin, Acta Crystallogr. Sect. A 1979, 35, 698). We thank Markus Neuburger for assistance in solving the crystal structures of rac-19b and rac-19c.
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    • Chemical Crystallography Laboratory Oxford
    • -3, located near the metal center. There were no restraints applied. Hydrogen atoms were calculated and refined as riding atoms. Data collection was performed with a Kappa CCD diffractometer. Programs used: structure solution: SIR79 (A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A. Guagliardi, A. Grazia, G. Moliterni, G. Polidori, R. Spagna, J. Appl. Crystallogr. 1999, 32, 115), structure refinement: CRYSTALS (D. J. Watkin, Crystals, Issue 11, Chemical Crystallography Laboratory, Oxford, 2001), weighting scheme: Chebychev polynomial (J. R. Carruthers, D. J. Watkin, Acta Crystallogr. Sect. A 1979, 35, 698). We thank Markus Neuburger for assistance in solving the crystal structures of rac-19b and rac-19c.
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    • -3, located near the metal center. There were no restraints applied. Hydrogen atoms were calculated and refined as riding atoms. Data collection was performed with a Kappa CCD diffractometer. Programs used: structure solution: SIR79 (A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A. Guagliardi, A. Grazia, G. Moliterni, G. Polidori, R. Spagna, J. Appl. Crystallogr. 1999, 32, 115), structure refinement: CRYSTALS (D. J. Watkin, Crystals, Issue 11, Chemical Crystallography Laboratory, Oxford, 2001), weighting scheme: Chebychev polynomial (J. R. Carruthers, D. J. Watkin, Acta Crystallogr. Sect. A 1979, 35, 698). We thank Markus Neuburger for assistance in solving the crystal structures of rac-19b and rac-19c.
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    • Carruthers, J.R.1    Watkin, D.J.2
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    • 2=o-Tol) even in the presence of a large excess of reagents.
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