Fe-Catalyzed Selective Cyclopropanation of Enynes under Photochemical or Thermal Conditions

Research output: Contribution to journalResearch articleContributedpeer-review


  • Marie Idrissa Picher - , University of Stuttgart (Author)
  • Bernd Plietker - , University of Stuttgart (Author)


The nucleophilic Fe-complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) catalyzes the cyclopropanation of enynes to substituted propargyl cyclopropanes using diazoesters as carbene surrogates. The catalyst can be activated either thermally in the presence of catalytic amounts of 4-nitroanisole or under photochemical conditions. Cyclopropanation occurs selectively at the enyne moiety; alternative olefinic moieties remain intact.


Original languageEnglish
Pages (from-to)340-344
Number of pages5
JournalOrganic letters
Issue number1
Publication statusPublished - 3 Jan 2020
Externally publishedYes

External IDs

PubMed 31868365