Photochemistry of Imine-Group VI Carbene Complexes with Alkenes: Synthetic Scope and Photochemical Aspects

  1. Campos, P.J. 1
  2. Sampedro, D. 1
  3. Rodríguez, M.A. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Zeitschrift:
Organometallics

ISSN: 0276-7333

Datum der Publikation: 2002

Ausgabe: 21

Nummer: 20

Seiten: 4076-4083

Art: Artikel

DOI: 10.1021/OM0202625 SCOPUS: 2-s2.0-0038109960 WoS: WOS:000178255000007 GOOGLE SCHOLAR

Andere Publikationen in: Organometallics

Institutionelles Repository: lock_openOpen Access Editor

Zusammenfassung

The irradiation of imine-group VI carbene complexes with alkenes leads to the formation of 1-pyrrolines through a mechanism involving an initial cyclopropanation followed by a light-induced [1,3]-sigmatropic rearrangement. The reaction has no limitations on the structural nature of the imine-carbene complexes and is general for terminal and acyclic or cyclic 1,2-disubstituted electron-poor olefins. From the studies on photochemical aspects such as excited-state quenching, quantum yield, excited-state sensitizers and Stern-Volmer plots, it is concluded that both excited states, singlet and triplet, undergo the photoreaction. As far as we know, this is the first photochemical study on these kinds of compounds.