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Volumn 26, Issue 25, 2007, Pages 6418-6427

New racemic planar-chiral metalloligands derived from donor-substituted indenes: A synthetic, structural, and catalytic investigation

Author keywords

[No Author keywords available]

Indexed keywords

CATALYST ACTIVITY; CHARACTERIZATION; COMPLEXATION; LIGANDS; SYNTHESIS (CHEMICAL); X RAY DIFFRACTION ANALYSIS;

EID: 37249051317     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om700832f     Document Type: Article
Times cited : (23)

References (74)
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    • For discussions pertaining to the diverse coordination behavior of indenyl ligands, see: a
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    • For selected (arene)Cr-based PCMs, see: (a) Englert, U.; Hu, C.; Salzer, A.; Alberico, E. Organometallics 2004, 23, 5419.
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    • The synthesis of 2a has been communicated previously: Wechsler, D.; McDonald, R.; Ferguson, M. J.; Stradiotto, M. Chem. Commun. 2004, 2446.
    • The synthesis of 2a has been communicated previously: Wechsler, D.; McDonald, R.; Ferguson, M. J.; Stradiotto, M. Chem. Commun. 2004, 2446.
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    • For some related crystallographically characterized Mn, Fe, and Ru complexes of donor-substituted indenes, see: a
    • For some related crystallographically characterized Mn, Fe, and Ru complexes of donor-substituted indenes, see: (a) Thimmaiah, M.; Luck, R. L.; Fang, S. J. Organomet. Chem. 2007, 692, 1956.
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    • Reference 10 herein
    • (i) Reference 10 herein.
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    • For selected reviews, see: a
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    • For selected reviews pertaining to alkene hydroboration, see: a
    • For selected reviews pertaining to alkene hydroboration, see: (a) Carroll, A.-M.; O'Sullivan, T. P.; Guiry, P. J. Adv. Synth. Catal. 2005, 347, 609.
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    • Reference If herein
    • (c) Reference If herein.
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    • Whereas the catecholborane (HBcat) has traditionally been employed in such hydroboration reactivity surveys, HBpin was chosen specifically for the studies herein because HBpin is significantly more stable to air and nucleophiles than is HBcat, and the greater steric bulk of HBpin provides an increased challenge in terms of attaining branched selectivity. For further details, see: (a) Crudden, C. M.; Hleba, Y. B.; Chen, A. C. J. Am. Chem. Soc. 2004, 126, 9200.
    • Whereas the catecholborane (HBcat) has traditionally been employed in such hydroboration reactivity surveys, HBpin was chosen specifically for the studies herein because HBpin is significantly more stable to air and nucleophiles than is HBcat, and the greater steric bulk of HBpin provides an increased challenge in terms of attaining branched selectivity. For further details, see: (a) Crudden, C. M.; Hleba, Y. B.; Chen, A. C. J. Am. Chem. Soc. 2004, 126, 9200.
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    • Reference 16b herein
    • (b) Reference 16b herein.
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    • For selected reports in which regioselectivity and enantioselectivity in alkene hydroboration employing HBcat are used in the evaluation of PCM design, see: (a) Kloetzing, R. J, Lotz, M, Knochel, P. Tetrahedron: Asymmetry 2003, 14, 255
    • For selected reports in which regioselectivity and enantioselectivity in alkene hydroboration employing HBcat are used in the evaluation of PCM design, see: (a) Kloetzing, R. J.; Lotz, M.; Knochel, P. Tetrahedron: Asymmetry 2003, 14, 255.
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    • Reference 9c herein
    • (e) Reference 9c herein.
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    • By comparison, Crudden and co-workers have demonstrated that, COD 2Rh]+BF4-/bisphosphine mixtures can provide >96% branched selectivity. See ref 17a herein
    • -/bisphosphine mixtures can provide >96% branched selectivity. See ref 17a herein.
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