1978
DOI: 10.1002/hlca.19780610427
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Eisenpentacarbonyl‐induzierte Reaktionen von Norbornadien und substituierten Olefinen

Abstract: The photochemical reaction of norbornadiene and a,a-unsaturated nitriles, esters and amides in the presence of Fe(CO)S was studied. Nitriles furnished the dinorbornenyl ketones 2a-c (Scheme 1). Esters led to an addition of a norbornene moiety to the double bond giving the substituted a,P-unsaturated esters 10a and 10b (Scheme 5). Methacrylamide and methyl p-aminocrotonate gave the cyclopentanone derivatives 14 and 17, respectively (Schemes 7 and 8). The reaction was in all cases highly stereoselective with gen… Show more

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Cited by 13 publications
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“…β-Hydrogen elimination to form 7 and successive reductive elimination would give 2 along with the regeneration of 5 . This metallacycle mechanism is proposed in the Fe(CO) 5 -mediated photoassisted reaction, and in addition, the β-hydrogen elimination from the ruthenacyclopentane ( 6 → 7 ) is plausible, which is supported by DFT calculation (the energy barrier for the β-hydrogen elimination from nonsubstituted ruthenacyclopentane with a benzene ligand is estimated at 2.7 kcal/mol) . On the other hand, in path B, ruthenium hydride species 8 is generated in situ initially, and 2-norbornene inserts into the Ru−H bond of 8 to give 9 .…”
Section: Resultsmentioning
confidence: 59%
“…β-Hydrogen elimination to form 7 and successive reductive elimination would give 2 along with the regeneration of 5 . This metallacycle mechanism is proposed in the Fe(CO) 5 -mediated photoassisted reaction, and in addition, the β-hydrogen elimination from the ruthenacyclopentane ( 6 → 7 ) is plausible, which is supported by DFT calculation (the energy barrier for the β-hydrogen elimination from nonsubstituted ruthenacyclopentane with a benzene ligand is estimated at 2.7 kcal/mol) . On the other hand, in path B, ruthenium hydride species 8 is generated in situ initially, and 2-norbornene inserts into the Ru−H bond of 8 to give 9 .…”
Section: Resultsmentioning
confidence: 59%