Competition between C−C and C−H Insertion in Prototype Transition Metal−Hydrocarbon Reactions

Competition between C−C and C−H Insertion in Prototype Transition Metal−Hydrocarbon Reactions

The competition between C−C and C−H insertion in model transition-metal reactions with cyclopropane and propene (C3H6) was studied as a function of total energy. Insertion of neutral transition metal atoms M (= Y, Zr, Nb, and Mo*) into the C−C bonds of cyclopropane led to formation of MCH2 + C2H4, w...

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Veröffentlicht in:Journal of the American Chemical Society 2003-01, Vol.125 (4), p.860-861
Hauptverfasser: Hinrichs, Ryan Z, Schroden, Jonathan J, Davis, H. Floyd
Format: Artikel
Sprache:eng
Schlagworte:
Chemical reactivity
Chemistry
Exact sciences and technology
Organic chemistry
Reactivity and mechanisms
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Zusammenfassung:The competition between C−C and C−H insertion in model transition-metal reactions with cyclopropane and propene (C3H6) was studied as a function of total energy. Insertion of neutral transition metal atoms M (= Y, Zr, Nb, and Mo*) into the C−C bonds of cyclopropane led to formation of MCH2 + C2H4, whereas C−H insertion produced MC3H4 + H2. The measured product branching ratios verify the relative potential energy barrier heights for C−C and C−H insertion predicted by ab initio calculations.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0278842