期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 26, 页码 14339-14344出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202102739
关键词
cyclization; electron transfer; homogeneous catalysis; radicals; titanium
资金
- DFG [Ga 619/12-2]
- Fonds der Chemischen Industrie (FCI)
- Projekt DEAL
- Gottfried Wilhelm Leibniz Prize
Cp2Ti(TFA) is a versatile catalyst for the [2+2] cycloaddition of bisenones through inner-sphere electron transfer, with a unique 5-exo step as the rate-determining step followed by a favorable 4-exo cyclization.
Cp2Ti(TFA) is a broadly applicable catalyst for the [2+2] cycloaddition of bisenones by inner-sphere electron transfer. The attractiveness of this mechanism is shown by comparison with outer-sphere ET methods. DFT calculations show that the reaction proceeds through a unique unfavorable 5-exo (the rate-determining step) and a favorable 4-exo cyclization.
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