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Volumn 132, Issue 1, 2010, Pages 413-426

[Ir(COD)Cl]2 as a catalyst precursor for the intramolecular hydroamination of unactivated alkenes with primary amines and secondary alkyl- or arylamines: A combined catalytic, mechanistic, and computational investigation

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION MECHANISMS; ALKYLAMINE; AMINE FUNCTIONALITY; AMINE UNITS; ARRHENIUS ANALYSIS; ARYL AMINES; C-C BONDS; C-C DOUBLE BONDS; CATALYST LOADINGS; CATALYST OPTIMIZATION; CATALYST PRECURSORS; CATALYTIC PERFORMANCE; COCATALYST; COMPUTATIONAL INVESTIGATION; CONCENTRATION OF; ELECTRON DENSITIES; FIRST-ORDER DEPENDENCE; H-BONDS; HYDROAMINATIONS; INTRAMOLECULAR ADDITIONS; INTRAMOLECULAR HYDROAMINATION; KINETIC ANALYSIS; KINETIC ISOTOPE EFFECTS; LATTER MECHANISM; NUCLEOPHILIC ATTACK; OXIDATIVE ADDITIONS; PHOSPHINE COLIGANDS; PLAUSIBLE MECHANISMS; PRECATALYSTS; PRIMARY AMINES; PROTONOLYSIS; PYRROLIDINES; RATE DEPENDENCE; REACTION MECHANISM; REDUCTIVE ELIMINATION; TRANSITION STATE STRUCTURE; UNACTIVATED OLEFINS; ZWITTERIONIC INTERMEDIATE;

EID: 74849103679     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja908316n     Document Type: Article
Times cited : (137)

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    • See the Supporting Information for more detail.
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    • The activation energy for fragmentation of M0 has not been assessed, but it is rather unlikely to invoke any significant barrier, as the examination by a linear-transit approach gave no indication for the existence of such a barrier.
    • The activation energy for fragmentation of M0 has not been assessed, but it is rather unlikely to invoke any significant barrier, as the examination by a linear-transit approach gave no indication for the existence of such a barrier.
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    • Examination by a linear-transit approach gave no indication that this process is associated with a substantial enthalpy barrier.
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    • This was done by employing a discrete ensemble of three molecules of 1,4-dioxane closely interacting with the Cl center, thereby simulating specific solvation effects adequately
    • This was done by employing a discrete ensemble of three molecules of 1,4-dioxane closely interacting with the Cl center, thereby simulating specific solvation effects adequately.
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    • The various conformers of the zwitterionic intermediate M2 are in rapid equilibrium, as mutual interconversion does not impose any substantial barrier due to almost free rotation of the azacycle unit around Ir-C and C-C bonds in M2.
    • The various conformers of the zwitterionic intermediate M2 are in rapid equilibrium, as mutual interconversion does not impose any substantial barrier due to almost free rotation of the azacycle unit around Ir-C and C-C bonds in M2.
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    • We have not determined the barrier for skeletal (polytopal) rearrangement between different forms of M3, but such processes are known to be facile.
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    • -1 (ΔΔG‡) between stepwise protonolysis of the Ir-C bond and β-hydride elimination commencing from M2, in favor of the former, which leads us to confidently conclude that β-hydride elimination is not traversable.
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    • Note that the barriers for mutual interconversion via Berry rotation are generally considered to be low
    • Note that the barriers for mutual interconversion via Berry rotation are generally considered to be low.
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    • The absolute TOF-determining barrier is given relative to the catalyst resting state M1a.
    • (a) The absolute TOF-determining barrier is given relative to the catalyst resting state M1a.
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    • -1. On the other hand, the aminoalkene 1a displaces pyrrolidine 2a from M4b in a kinetically viable, downhill step (see Figure 7).
    • -1. On the other hand, the aminoalkene 1a displaces pyrrolidine 2a from M4b in a kinetically viable, downhill step (see Figure 7).
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    • -1 (ΔG‡ , 298 K).
    • -1 (ΔG‡ , 298 K).
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.