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Volumn 127, Issue 34, 2005, Pages 11979-11988

Organolanthanide-mediated intramolecular hydroamination/cyclization of conjugated aminodienes: A computational exploration of diverse mechanistic pathways for the regioselective generation of functionalized azacycles supported by a lanthanocene-based catalyst complex

Author keywords

[No Author keywords available]

Indexed keywords

DISSOCIATION; FREE ENERGY; KINETIC THEORY; THERMODYNAMICS;

EID: 24144456560     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja042546h     Document Type: Article
Times cited : (80)

References (118)
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    • For hydroamination mediated by early transition metals, see: (a) Pohlki, F.; Doye, S. Angew. Chem., Int. Ed. 2001, 40, 2305.
    • (2001) Angew. Chem., Int. Ed. , vol.40 , pp. 2305
    • Pohlki, F.1    Doye, S.2
  • 24
  • 38
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    • Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, U.K., Chapter 21
    • For organolanthanide reviews, see: (a) Marks, T. J.; Ernst, R. D. In Comprehensive Organometallic Chemistry; Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, U.K., 1982; Chapter 21.
    • (1982) Comprehensive Organometallic Chemistry
    • Marks, T.J.1    Ernst, R.D.2
  • 42
    • 0000969532 scopus 로고
    • Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, U.K., Chapter 2
    • (e) Edelmann, F. T. In Comprehensive Organometallic Chemistry; Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon Press: Oxford, U.K., 1995; Vol. 4, Chapter 2.
    • (1995) Comprehensive Organometallic Chemistry , vol.4
    • Edelmann, F.T.1
  • 64
    • 33645586456 scopus 로고    scopus 로고
    • note
    • ≠ = -32.7 eu; ref 8b)
  • 72
    • 33645584856 scopus 로고    scopus 로고
    • note
    • ≠ = -14.6 eu for intramolecular cyclization, therefore, do not relate to the intrinsic kinetics for this step either.
  • 95
    • 4043083704 scopus 로고
    • Phys. Rev. B 1986, 34, 7406.
    • (1986) Phys. Rev. B , vol.34 , pp. 7406
  • 99
    • 33645600033 scopus 로고    scopus 로고
    • For further details, see: www.struked.de.
  • 100
    • 33645593199 scopus 로고    scopus 로고
    • note
    • For substrate adducts X-S, the -S(t) and -S(c) suffixes denotes the 4E(trans) and 4Z(cis) isomers of the heptadien-1-amine aminodiene substrate 1.
  • 101
    • 33645604290 scopus 로고    scopus 로고
    • note
    • 10) × T × exp(-ΔG‡/RT).
  • 102
    • 33645598002 scopus 로고    scopus 로고
    • note
    • For NMR evidence of rapid amido/amine permutation and association of free amine, see ref 4b.
  • 103
    • 33645606222 scopus 로고    scopus 로고
    • note
    • 3)] compound (ref 4b).
  • 106
    • 0002610072 scopus 로고
    • Fluxional allyl complexes
    • Jackmann, L. M., Cotton, F. A., Eds.; Academic Press: New York
    • (b) Vrieze, K. Fluxional Allyl Complexes. In Dynamic Nuclear Magnetic Resonance Spectroscopy, Jackmann, L. M., Cotton, F. A., Eds.; Academic Press: New York, 1975.
    • (1975) Dynamic Nuclear Magnetic Resonance Spectroscopy
    • Vrieze, K.1
  • 108
    • 33645586455 scopus 로고    scopus 로고
    • note
    • 3] dioxane adduct (ref 14d).
  • 109
    • 33645591718 scopus 로고    scopus 로고
    • note
    • The examination by a linear transit approach revealed no indication that this process is connected with a significant enthalpic barrier.
  • 111
    • 33645592118 scopus 로고    scopus 로고
    • note
    • -1 by considering real reaction conditions (80 molar excess of S(t), 298.15 K, 1 atm).
  • 112
    • 33645588506 scopus 로고    scopus 로고
    • note
    • tot) are given relative to the catalyst's resting state 3t′-S, corrected by the respective number of substrate molecules.
  • 114
    • 33645583415 scopus 로고    scopus 로고
    • note
    • (b) Compound 4s is likely to be a transient species, thus being present in negligible stationary concentrations, because its formation via reversible 3t″ → 4s cyclization and ensuing 4s + S(t) → 4s-S(t) substrate association are facile processes.
  • 115
    • 33645583297 scopus 로고    scopus 로고
    • note
    • The rate law (eq 2) does also account for substrate self-inhibition effects that have been experimentally observed in octadienylamine cycloamination (ref 8b)
  • 116
    • 33645599655 scopus 로고    scopus 로고
    • note
    • See Scheme S1 and S2, respectively, by taking the actual reaction conditions into account (ref 30).
  • 117
    • 33645601194 scopus 로고    scopus 로고
    • note
    • It should be noted that the prediction of accurate entropies for lanthanide-as well as for transition-metal-assisted processes taking place in condensed phase remains still a frontier in computational chemistry.
  • 118
    • 33645588899 scopus 로고    scopus 로고
    • note
    • -1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.