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Computational Study on the Co-Mediated Intramolecular Pauson-Khand Reaction of Fluorinated and Chiral N-Tethered 1,7-Enynes
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Computational Study on the Co-Mediated Intramolecular Pauson-Khand Reaction of Fluorinated and Chiral N-Tethered 1,7-Enynes
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| Escorihuela Fuentes, Jorge; Wolf, Lawrence M. | |||
| Aquest document és un/a article, creat/da en: 2022 | |||
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| The Co2(CO)8-mediated intramolecular Pauson−Khand reaction is an elegant approach to obtain cyclopentenone derivatives containing asymmetric centers. In this work, we employed density functional theory calculations at the M11/6-311+G(d,p) level of theory to investigate the mechanism and reactivity for the Pauson−Khand reaction of fluorinated and asymmetric N-tethered 1,7-enynes. The rate determining step was found to be the intramolecular alkene insertion into the carbon−cobalt bond. The stereoselectivity of the alkene insertion step was rationalized by the different transition states showing the coordination of the alkene through the Re- and Si-face. The effects of different fluorine groups and steric effects on both the alkenyl and alkynyl moieties were also theoretically investigated. | |||
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