Regiochemistry of S-alkyl-substituted alkynes in Pauson-Khand reactions

• Verfasst von: Schulte, Jan Hilko [VerfasserIn]
• Verfasst von: Gleiter, Rolf [VerfasserIn]
• Verfasst von: Rominger, Frank [VerfasserIn]
• Titel: Regiochemistry of S-alkyl-substituted alkynes in Pauson-Khand reactions
• Titelzusatz: is a correlation with X-ray data and charge distribution calculations of the Co2(CO)6-alkyne complexes possible?
• Verf.angabe: J. Hilko Schulte, Rolf Gleiter, and Frank Rominger
• E-Jahr: 2002
• Jahr: 08/28/2002
• Umfang: 4 S.
• Fussnoten: Im Titel erscheinen die Ziffern 2 und 6 tiefgestellt ; Gesehen am 06.11.2020
• Titel Quelle: Enthalten in: Organic letters
• Ort Quelle: Washington, DC : ACS, 1999
• Jahr Quelle: 2002
• Band/Heft Quelle: 4(2002), 19, Seite 3301-3304
• ISSN Quelle: 1523-7052
• DOI: doi:10.1021/ol026578q
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1738048527

Abstract

Pauson−Khand reactions (PKR) of RSC⋮CR‘ (6−10) yielded in all cases as the main product the regioisomer with the alkyl-S group disposed α to the CO group (16a−22a). Correlation of these results with X-ray data and charge distribution calculations of the corresponding dicobalthexacarbonyl complexes proves that a recently postulated “trans effect” in these complexes is not suitable for predicting the regiochemical outcome of the PKR unambiguously.